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Wind and White Crane: Hidden Hand Attacks

I have used lockdown as a chance to complete a number of projects. I have also done a lot of reading on a wide variety of topics. This included finishing some books I had stalled on, and looking at some others I had just never got around to giving my full attention to. In the latter category were a number of books on Ninjitsu, including some by Stephen Hayes. Books on this topic often have a lot of chaff in with the wheat, although to be fair, that is true of many martial arts books written in the 80s, if not in general!

The Wind Posture

One of the sections that interested me was that on stances, the stance associated with the element “wind” in particular.
As I have discussed in my own books, I feel “stance” and most of its English alternatives is an unsatisfactory term. It is a transitional rather than stationary configuration. Hayes likens them to snapshots or frames from a film rather than being stationary. Most of us, even many high-grade martial artists, have a relatively shallow immersion in the art. Stances are an important training aid but it is easy to become diverted by the details rather than passing through to master the underlying concepts. Interestingly the Japanese term “kamae” translates as “pose” or “posture”, but also as “base”. Stances are often the foundation for learning.
From Stephen Hayes Ninja Vol.1:
“The wind level of consciousness is characterized by the receiving posture, or hira no kamae. The receiving posture couples a freely moving base and the power to harmonize the body with the intentions of an attacker. The feet are placed hip-width apart and carry the body weight evenly. The knees are flexed slightly more than in the natural posture, creating a feeling of balance in the hips similar to that experienced just before sitting down on a chair. The back is straight, in a natural manner, and the shoulders are relaxed. The arms extend outstretched to the sides with the hands open, and the eyes gaze forward in soft focus, taking in the whole picture without limiting the concentration to one single point.
The body should have an extremely light, almost floating feel to it. Epitomizing some concepts that are the opposite of those embodied in the shizen earth pose, the wind-level hira no kamae prepares the fighter for adapting to and going with the attacking moves of the enemy. This adaptive sensitivity is centered in the chest behind the breastbone. The evenly distributed balance facilitates quick and easy movement in any direction in response to the attacker’s intentions. The outstretched arms have the potential of becoming tools to carry out punches, strikes, deflections, blocks, throws and locks, as well as acting as distractions and calming techniques.
In self-protection situations, the hira posture is used to handle attackers in a way that subdues them without injury, if possible. The pose itself is nonthreatening, and it appears to be an attempt to fend off an attack or to reassure an adversary that there is no hostile intention, as upraised open hands traditionally symbolize surrender or benediction. From the hira no kamae, footwork proceeds with circular or straight- line movements, as appropriate for the specific circumstances. The arms are used to entangle the adversary with spiraling actions or intercept the adversary with direct advances.”
Another book on Taijutsu (by Charles Daniels, taught by the same sensei as Hayes, Masaaki Hatsumi) shows a posture it calls “hoe no kamae”. While this uses an L stance and raised forearms, I suspect the application is similar.
Those of you wise enough to have invested in a copy of Crash Combat or Attack, Avoid, Survive (thank you!) will know I place considerable emphasis on evasion rather than parrying or blocking. The basis of this is the ginga movement from Capoeira. Could the wind kamae be an alternative or complimentary evasion technique to ginga?
Sadly, I do not currently have much room to dance around, so I cannot experiment much with movement and evasive moves in hira no kamae. Some observations:
On its own, hira no kamae and hoe no kamae look like the fighter is just standing there saying “Go on dude, hit me!”. This is one of the symptoms of regarding a stance as static, amplified by still photography. In practice, this posture will be used to allow fast body turns. The outstretched arms contribute to maintaining balance. Study the body twist used in the photos below. Hira no kamae is not used, but it could have been passed through if the defender had thrown up his arms for stability. Both of my martial arts titles explain how to use quick evasive turns similar to that shown. You will find these in the bayonet and knife sections, as well as elsewhere in the text.

White Crane

Hira no kamae may have reminded some of you of the white crane-inspired movements used in some styles of Kung Fu and Karate. Not surprisingly, white crane styles often put a considerable emphasis on evasion.
The extended lead arm can be used to parry attacks that cannot be fully avoided. Brought up under the attacker’s armpit and we have the Tai Chi technique of “diagonal flying”. This is effectively the same principle as using a straight-arm Karate parry against a foe’s torso and breaking their balance.
Hayes’ books often show defensive strikes made against the attacking limb, including from hira no kamae. This is also a tactic favoured by many white crane styles.
The wind posture is likely to place a defender side on to an attacker. As described above, the lead hand may be used for an assortment of parries and strikes. The latter include finger jabs to the face and clawing actions. The rear hand has the advantage that is has a considerable distance in which to generate power, and that it is effectively hidden from the attacker’s view. This is the equivalent of the “tail” position used with swords and other weapons. The foe has no idea from what direction a rear hand attack may come, and the rotation of the waist can create power and velocity.
One option is to adopt a side-on horse stance as the forward arm parries. The rear hand then executes a classic reverse punch, the hips twisting through ninety degrees to transition into forward stance. Hook punches are another useful technique for an enemy you are side on to.

Kup and Pow

In Complete Wing Chun (Vol.2) the author discusses Pak Hok Pai, a white crane style with several techniques suited to attacking an opponent to the side. In best Batman tradition, two of these are called “pow” and “kup”. Pow chui has been described as a straight uppercut employed with a semicircular body motion. I like to think of it as a “long uppercut”, although technically it is more of a long shovel-hook. Targets include the testicles, kidneys or throat. Kup/ cup chui is a downwards, overhead strike that can be targeted at the soft muscles of a kicking leg or the forearm, biceps or triceps of an attacking or guarding arm. The temple, nose or top of the head can also be targeted with kup. Like the corkscrew hook described in Attack, Avoid, Survive, a kup can be used to reach over and around a guard. The difference is that the kup typically comes from the rear hand while the corkscrew starts as a lead jab. Choy Lay Fut is also notable for use of large arc swinging strikes.
A more horizontal motion, intermediate between pow and kup can be used to throw a lateral, circular strike (a “roundhouse punch”, perhaps?), more open and straighter-armed than a hook. While this has elements of being a “haymaker”, many of the standard objections do not apply if correct tactics and a hidden hand posture is used. The back and kidneys or below the guard are the favoured target areas. An upward angled or horizontal strike can be applied to the area of the sixth to tenth ribs: above the floating ribs and below the level of the lower tip of the sternum. This is likely to affect the lungs. All these punches are powered by waist/ hip rotation and are most effective with a relaxed, easily accelerated arm.
Kup and pow are both performed using the second knuckle of the fingers as the striking surface. These are the knuckles that would make contact if you were knocking on a door. Some styles call this a “leopard fist”. Attack, Avoid, Survive showed a related technique, the half-fist, used to attack soft, narrow targets such as between the ribs. The thumb is often pressed against the side of the fingers, rather than being clamped across them as with a conventional fist. Rear hand attacks can also utilize palm-strikes, chops and hammer-fist strikes.

Tai Chi

In “How To Use Tai Chi as a Fighting Art” Erle Montaigue describes the Stork Spreads Wings Punch, another potential rear hand attack. The “Stork Spreads Wings” posture is often translated as “white crane…”:
“This punch is one of the most powerful punches from any martial art. It is totally centrifugal and quite fast considering its distance…This is one of only three punches in T’ai Chi that uses the first two knuckles, in T’ai Chi we use the knuckles that most suit the position of the palm upon impact otherwise we use extra muscles to hold the palm into position and there-by lessen its impact…If you block with the right fist across to the left against a left face attack with the left palm underneath it, … the left palm then takes over the block while the right fist is thrown out at the target with the turning of the waist…Your left palm looks after the left fist while your right fist circles back up in a centrifugal punch to his left temple”
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Cross Stepping Post: Part Three

Some time ago I started what was intended to be a series of posts on the “Cross Stepping Post”. Part One introduced two of the movements and the intention was to let the reader try these out for a couple of weeks before covering the thing as a whole. Part Two gave some advice on learning part one. As with most of my plans, real life intervened and a year has gone by! Here is part three, the full sequence. (or rather, one side of it!)
For part three we will only consider the footwork, which is the essence of the thing. There are some hand movements that can be added but it is better to concentrate on your footwork, balance and co-ordination for now.

Setup. Begin with your right foot slightly advanced and your left foot angled out. Your spine should be straight, your belly and bum pulled in. Your knees are slightly bent, your shoulders are relaxed and your arms hang down by your sides. Try not to look down at your feet. If you have some familiarity with Tai Chi or other soft or internal martial arts these conditions will be familiar. If you are not familiar with this body condition consult the Tai Chi section of my book or other good works on the subject. I have shown the lead foot pointing forwards, but the toe can be turned inward, a the lead foot may even be parallel with the rear.
First Move: Step Back. Still with your feet in the starting position it should be possible to lift your right foot from the ground without noticeably shifting your weight. If you are new to this you probably cannot do this. This is one of the objectives you will aim for.
For the first move you raise your right foot and place it behind your left. Your calves should brush or touch. The right foot is raised “flat”, without the heel or toes lifting first. It is placed flat behind the left. This will take practice, so persevere.
Second Move: Forward Foot Kick/Step. For the second move the left/forward foot is raised and the heel passes down along the inside of the right foot. As the left heel passes the right heel the left foot straightens up. The left foot is brought forwards in a sort of sweeping action and is placed on the ground. The final foot position is a mirror of the start/setup position. You should have maintained your balance throughout this sequence. The chances are you did not, but this will improve with practice.
Third Move: Forward Foot Across. For the third move, the left foot is raised and placed down ahead of the right. The heel is turned in and the toes out. The lead leg will touch the rear knee. Note that for the previous steps the forward foot has been used. The right/forward foot is stepped back. The left foot is now the forward foot and is moved in the next two steps.
Fourth Move: Back Foot Kick/Step. The next move involves the rear foot, which in this case is the right. I think of this move and the previous as “the reset” since it takes you back to the setup position.

The rear/right foot makes a semi-circular step forward. Again, lift the entire sole rather than the toes or heel. Place the entire sole down. This move returns you to the start/setup position with your right foot advanced, although you may have changed location slightly.
Transition. The next move is the “transition” step. This will take you from a right-forward stance to a left-forward stance. The action is the same as the third and  fourth step, but in this instance the right foot steps before the left. The rear foot steps forward so that you are back in the starting position, but this time with the left foot forward. You now repeat the sequence on the other side. Your left foot steps behind the right. The right then withdraws and advances etc.
Here is the sequence as a single image you can print or load onto your phone.

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Hammer-Fist and Single Whip

Sometimes you search for something only to discover it was close by all along.
A case in point:
In my recent book, Crash Combat, I reflect that the hammer-fist is a somewhat underappreciated weapon in martial arts. I may have made this assertion in my previous book too.
Reading Joseph Wayne Smith’s book on Wing Chun, he makes a similar statement.
Hammer-fist can substitute for the chop, back-fist and even some closed-fist punches. It is much less likely to result in self-injury than some of these techniques.
Hammer-fist is easy to perform correctly and can deliver powerful blows to both hard and soft targets. Along with the palm-heel, it is probably one of the best hand strikes that we have.
Naturally enough, I was experimenting with some hammer-fist attacks the other day.
I’d been looking at the rapid 270-360° turn that is possible by using the “closed step” of Pa-kua/Bagua. (See my book for details).
This could be used to power a spinning back-fist to strike a foe in the outside gate. But a true back-fist can be fiddly, requiring a terminal flick of the wrist and impact with the first two knuckles.
A spinning hammer-fist is more logical and for most fighters more powerful.
I notice that if I bend my wrist inward a fraction my hammer-fist seems a little stronger or more stable at the moment of impact.
I also note that this mode favours a sort of “snap”.
I can throw the technique with a relaxed arm and hand and snap into a clenched hand just before impact.
This, of course, lets the arm and hand acquire more initial speed and produces a more powerful attack with less muscular effort.
From a variety of positions, I can just flick my arm and have it land in a hammer-fist. This curve of the wrist seems a technique worth cultivating.
And then it dawns on me!
This is the hand form of horse-foot palm from tai chi’s single whip.
I have written about this as a parrying technique and even as a form of punch. I have probably even written about hammer-fist-like strikes with this hand form.
But I had not grasped one of the other important things that posture was trying to teach: that a relaxed, slightly bent wrist gives you a very efficient hammer-fist.
As always, experiment for yourselves.
Can you use hammer-fist instead of your other strikes?
Can you relax more to make it faster and more powerful?
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Cross Stepping Post: Part Two

It occurs to me this morning that the previous post on “the Post” needs a little more information. Some of you reading that post will not be familiar with Tai chi, Bagua or have read the relevant parts of my book. If you are only familiar with hard, external interpretations of martial arts you may find the seemingly simple movements of the Cross Stepping Post surprisingly difficult.
It occurs to me this morning that the previous post on “the Post” needs a little more information. Some of you reading that post will not be familiar with Tai chi, Bagua or have read the relevant parts of my book. If you are only familiar with hard, external interpretations of martial arts you may find the seemingly simple movements of the Cross Stepping Post surprisingly difficult.
The essence of the Cross Stepping Post is the cultivation of stability and balance. Your upper body needs to be relaxed and your weight down in your pelvis. Since we are not performing the arm movements at this stage your arms should hang down by your sides, relaxed like hanging vines. If you are used to putting lots of muscular tension into you stances this will probably be one of your first problems in performing the Post.
1. Sinking of shoulders and dropping of elbows.
2. Relaxing of chest and rounding of back.
When you attempt the movements of the Post your upper body should be as relaxed as possible, having a slightly hunched shoulders look that comes from a lack of tension.
The other useful thing to remember is that in martial arts movement generally comes from the waist. Don’t attempt those kick-like foot movements just by moving your leg. You will need to rotate your waist/hips to swing them around.
I hope that helps. Persevere and I will post some more information on the exercise soon.
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Cross Stepping Post: Part One

Recently I have been looking into a concept that Erle Montaigue called “the Post”. Erle described the Post as being an abstract way to learn very practical things. He as even gone as far as to say that the Post contains two exercises that give every thinkable internal body movement for self-defence without having to think too hard, and are probably one of the most valuable training aids ever. Certainly this apparently simple sequence has much greater depth than is first apparent. I am going to devote a few blogs to this topic and invite the reader to try it with me.
What Erle calls the Post is actually two sequences, one from Tai Chi and the other from Bagua. The Tai Chi one is called “Stepping over the Gate” and the Bagua “Cross Stepping Post”. Initially I am only going to deal with Cross Stepping Post.
If you dislike long complicated katas, you will be pleased to hear that Cross Stepping Post has only four different steps. These are mirrored on the left and right sides so there are actually eight steps and two linking sets to change sides. Complexity of the arm movements varies. Performing this exercise without the arm movements is very beneficial since it lets you concentrate on your balance and foot movements. You can go through the foot movements anytime that you are standing around, waiting for the bus etc. In his main video on the post (MTG54) Erle demonstrated a very simple set of arm movements. In MTG55 he also details the post and there demonstrated a more varied set of arm movements. On this video Erle points out that what is actually going on internally is actually more important than the actual physical movements. Bear this in mind as you practice.
Both videos are available as downloads or DVDs from http://www.taijiworld.com
I am going to introduce the Cross Stepping Post gradually. For this first blog I am going to suggest learning just two of the steps. They are similar, and once you have some grasp of these you will have learnt half the necessary moves. Just practicing these two steps will also probably reveal to you that your balance and stability is not what they might be.
The first move we will learn is actually the second move in the sequence. I call this the “Forward Foot Kick/Step”, although you must keep in mind that this foot action and the others have many other applications than the one immediately apparent. It is not just a kick!
Your feet are close together and your knees are probably brushing against each other. As the lead foot heel withdraws past the other heel the foot straightens up so the toes point forwards. The foot goes back about a foot length and swings in an arc to the forward position. Heel and toe are placed down at the same time and you should be in balance for the entire movement. Cross Stepping Post actions are performed without obvious shifts in weight such as leaning.
The second move is the fourth, a “Back Foot Kick/Step”. Position of the feet is similar but a little more natural in that there is some space between the forward and rear foot. The feet are close enough for the knees to brush. In all these moves the toes always point forward or to the outside. That is, if your right foot is pointing at an angle it is to the right, and to the left for your left foot.
The beginning of this step puts some torsion on your waist and hips. You utilize this by moving the back foot in an arc and placing it down. The toes of the forward foot point forward or inward. This is a very similar movement to the Forward Foot Kick but uses the rearward foot and has less initial backward movement.
No arm movements yet. Work on your balance and footwork Experiment with these two movements for a couple of days. See if you can improve your internal balance.
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More Applications of Single Whip

Today's blog continues on the topic of applications of tai chi's single whip movement. Be sure to read the previous blog on this subject.
As the left foot steps forward and out, there is a moment when there is no weight placed on it.
Anytime that your foot is in this state it may be used to kick.
Kicks from the single whip movement will often be forward or horizontal snap kicks.
Since tai chi fighting tends to be at relatively short ranges, it is prudent to use your opponent for additional support.
For example, an opponent swings a club at you with his right hand. You use your left palm to parry his forearm and momentarily take hold.
Your left leg springs upward and throws a roundhouse kick, contacting with the shin, instep or toe as appropriate for the range.
A likely target is the Liv 13 point on the side of the body where the torso is narrowest. This point allows you to attack the kidneys with a strike to the side of the body.
The hold on the opponent’s arm gives you support but also allows you to sense any following movement he makes.
If you have the window of opportunity a snap kick to the groin may be possible instead. You can follow this with the hooked palm making a strike to the Liv 14 area as described in the previous blog.
The next technique is an extension of something I described in my book in the section on the outward karate parry.
In that technique, you parried across the foe’s chest and a slight turn outward and body movement forward unbalanced them.
In our single whip example, the foe’s right hand is first parried by our right, so we are on their outside gate.
You step towards your foe, your left foot advancing behind them.
This movement may allow you to make a strike under their arm with your left shoulder.
Your left arm swings up under their right arm and extends forwards across their chest. Done correctly, this will nudge the opponent off-balance and the placement of your left leg will prevent him stepping back to regain it.
The next example uses an earlier part of the single whip movement.
As an enemy punches at you with their right, you use your right arm and the hooked palm to parry it outward to your right.
The fingers of your left hand point towards your right elbow so your left arm forms a shield across your body.
Keeping your arms in the same relative positions, you step forward and use your hooked right palm to strike forward and down at the area beneath the foe’s right armpit.
This punch with the hooked palm and some of its targets were described in the previous blog on single whip.
In a variation of the above, you again parry with your hooked palm but your right hand finishes in a position where it is not on a direct line to the armpit. In this case you step forward and use your left to palm strike the foe’s body.
I mentioned single whip being used to initiate locks in the previous blog. Today I will describe some of the possible techniques in a little more detail.
Suppose we are on the outside gate and acting on the foe’s right arm. Your right arm has either hooked over or grabbed his wrist area.
One of the simplest moves from here is for the left palm to come up and strike the elbow. Since the other hand is pulling the arm in the opposite direction such an attack to the joint can be very damaging.
If the application of force is less acute, then a straight arm lock can be applied. Pull his hand back and to your right and apply your weight to his elbow.
If your left palm is applied to the lower side of his elbow, you can move the elbow up and pull his hand down to set up a bent arm lock such as a hammerlock. This can be used in various ways, including to pull him off balance.
For our third variation of lock, the left hand goes under the elbow and makes contact with the inner side of the elbow.
Readers of my book will know there are some strike points on the inside of the elbow and that the edge of the hand can be applied to these as this lock is made.
The intention here is to fold the elbow joint, raising the hand up.
You can then use the forearm as a lever to twist the upper arm and shoulder joint. Force the hand up and back and also push the upper arm backwards to unbalance the foe.
Sometimes the foe will not unbalance, orat least not enough to fall.
If this happens, release the hand and use your right to move in a fast semi-circle to hammer-fist him below the pectoral in the area detailed in the previous blog.
Bounce you right hand up again and use it to palm strike on the chest or face. Then try something else.
You can also apply locks from the inside gate, although this is a bit more dicey since you can be hit by his other hand.
In these examples the hooked palm right hand engages his left wrist area. As you step forward your left hand makes an edge-of-the-hand-strike on the crease of his elbow.
This is the same sort of lock as described in the previous section.
You fold his elbow joint and take his hand up and back, moving to his outside gate. As you stepped in, you probably placed your feet between his so this move can be turned into a thigh or knee strike to the groin.
Another technique for the inside gate is the variant of the karate outside parry. Engage the left wrist with your right hand and then step in, passing your left arm under his and extending it across his back. Turn your hips to the left to unbalance him.
In the previous blog on single whip I mentioned breaking wrist grabs.
My book contains a variety of methods for doing this, my favourite being the “underneath and outside” movement.
The video below shows a number of applications of single whip, including a method for breaking wrist grabs.
Note that as the hooked palm turns over it effectively passes underneath and to the outside of the grabbing arm.
The left hand coming over has a number of applications, one of which is to shield the body should the grab be turned into a strike or should the other hand or head be used to strike.
I hope this brief look at the applications of single whip have been of some interest.
For much more information on self-defence and the principles upon which some of these applications are based please buy a copy of my book.
 
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Single Whip and Horse Foot Palm

One of the advantages of writing this blog is that I can often cover topics that there was not room for in either of my books.
Today I am going to write a little about the “hooked fist”, which in turn leads to some discussion of tai chi’s single whip movement.
Single whip has a number of variations, and this is worth bearing in mind when you view videos of the movement.
Some are variations between different styles of tai chi, while others are different interpretations.
While tai chi is a potent martial art, many of its practitioners only study it for health or meditative purposes and this should be kept in mind when viewing movements.
For purposes of today’s discussion, the “whip” part of the movement will be considered to be with the right hand and the movement has three components I will discuss.

The first “component” is the right hand which comes up to chest level and moves outward, the wrist bending so that the closed hand hangs down. The arm looks a little like you are whipping the rump of a donkey with a riding crop or switch, hence the name of the position.
The shape the hand makes has a number of names. It is sometimes called “Hooked Palm” while the name “Turtle Head” is probably the most descriptive. Some instructors liken it to the “Crane Beak” hand form.
Given the equestrian aspect of the single whip position, the “Horse Foot Palm” name is perhaps most apt.
After the right hand has assumed position, the body turns to the left and the left hand comes up in an open palm. On some variants this is a simple semi-circular movement, while other variants cause the hand to roll over or spiral.
At the same time that the left hand moves the left foot steps forward and outward slightly. I used to find the turn and step unusually difficult until Erle Montaigue told me that you should keep your left elbow above your left knee when making that part.
In English, we tend to call single whip a posture or position, but it is actually a sequence of movements.
When movements from a kata or form are used in combat it is unlikely the whole thing would be used, and used exactly as you would perform it during a kata.
Elements of a kata or form are rather like clay from which you build the thing you need at the moment that you need it. They are not rigid geometric or mathematical constructions, or at least, they are not once your use of them matures.
Most tai chi moves are multifunctional. One instructor may tell you the combat application is one thing, another that it is something else. In reality there may be many more applications.
With that in mind, let us investigate some of the combat applications of the components of single whip.
Single whip is very much the signature move of tai chi.
In movies such as The Matrix you will see single whip used as an opening posture. In reality, it is better reserved until range has been closed with an opponent.
The left palm’s most obvious application is that it is a palm-strike. It is in a good position to hit the chest region or the chin, and the accompanying step forward adds power.
The open palm can also be used to parry, either with the palm or either edge of the hand. The spiralling motions used for the left hand in some varieties of single whip can be used to neutralize a wrist grab.
The horse foot palm is probably most widely understood as a parrying hand form.
It can hook over an enemy’s arm and pull it out or down.
It can parry to either side or upwards.
In his book “Knives, Knife Fighting and Related Hassles: How to Survive a Real Knife Fight” Marc MacYoung describes a tai chi-inspired “Whip Parry” as a defence against knife attack. Since the arm is semi-relaxed, the parry has a very short response time. Marc recommends that you move the wrist and let the hand go along.

Horse foot palm can also be used offensively in a number of ways.

The most obvious is to use it as a hammer-fist strike against targets such as under the arm or the temple.
The hand can also be used as a reverse hammer-fist: swing inward to hit targets such as the back of the head or the shoulder blade.
The hand can also be used to execute a downward glancing punch against certain bony areas of the body.
The hand posture is such that the force of hitting a bony area is dissipated along the arm.
Targets often used for such attacks include the GB 22 point about 3" under the armpit and the area just below the pectoral muscle.
The latter are Liv 14 and GB 24, on the mammary/mid-clavicle line, a couple of ribs down from the muscle in the sixth and seventh intercostal spaces.
These are all potent and potentially very harmful targets which can also be attacked by a hammer-fist from a horse foot palm. Horse foot palm can also suddenly be flipped over to make a back-fist strike to the enemy’s nose!

Both hands can of course be used together. Either hand can parry while the other counter-attacks.
If one hand grabs the wrist, the other can contact the elbow in various ways and apply various varieties of lock. This is another possible application for the spiralling movement of the left hand. Armlocks can be used to unbalance a foe.
The step forward with the left foot also has martial applications. In high level tai chi it is supposed to strike the KD 5 point on the enemy’s foot and drain their qi.
For the less advanced of us, the foot can be positioned to stop an enemy stepping back to regain their balance when the balance is disrupted by hand techniques.