Hands and Legs Have Opposite Yin–yang
This teaching from Wu (Hao) style is subtle. It is describing a whole-body yin–yang circulation model (大週天 da zhou tian) applied to movement—not just hands or legs separately, but a coordinated internal circuit.
Let’s unpack what the master is really saying.
1. “Hands and legs have opposite yin–yang”
When Wu style says:
手之陰陽 與 腿之陰陽 相反
(the yin–yang of the hands is opposite to that of the legs)
It means:
Hands (upper body)
Yang side (陽面) → opens outward (放開)
Yin side (陰面) → sinks downward (往下)
Legs (lower body)
Yang → rises upward (由腳往上)
Yin → roots downward (往下沉)
👉 So the body forms a crossed yin–yang system, not parallel.
2. What is “大週天 (big circulation)” here?
This is not Daoist microcosmic orbit literally, but a functional circulation of force, qi, and structure:
From feet → legs → kua (胯) → dantian (丹田) → spine → arms → hands
Then returning through the opponent or back into your structure
It is a continuous loop (循環 xun huan), not a one-way push.
3. “Yang opens, Yin sinks” — what does it mean?
When the master says:
陽面放開，陰面往下
This is not just about direction—it is about quality.
Yang (陽)
Expanding
Opening
Expressing outward
Like peng 勁 (掤) quality
Yin (陰)
Sinking
Storing
Absorbing
Returning inward/downward
4. Why do the hands seem to go downward in front of the chest?
You asked:
“手在胸前往下？”
Yes—but this is easily misunderstood.
It is not collapsing downward.
It means:
The yin side of the arms is sinking (沉 chen)
While the yang side is still expanding (開 kai)
So externally it may look like:
👉 hands slightly settling downward
But internally:
👉 there is simultaneous upward/expanding support
5. The key idea: crossing flows
This is the most important part.
Wu-Hao is describing cross-directional forces:
Legs
push upward (yang rising)
root downward (yin sinking)
Hands
expand outward (yang opening)
sink inward/downward (yin returning)
👉 So the body creates a spiral, circulating system, not a straight line.
6. Biomechanical meaning
In modern terms:
Legs generate ground reaction force upward
Core (丹田 / dantian) redistributes force
Arms:
do NOT push forward
but release and guide force while maintaining downward sinking
This prevents:
overextension
local force
disconnection
Instead you get:
👉 elastic whole-body power
7. Why this matters in push hands
If you only:
push forward with hands → you become a river (line force)
If you follow this principle:
legs rise, hands sink, center rotates
You become:
👉 a circulating field (like sea 海)
So when you touch:
your partner feels pressure
but cannot find a direction
because force is circulating, not linear
8. What the master is really saying
He is telling you:
Do not think hands push, legs support
Think:
legs rise (yang)
hands sink (yin)
center circulates (丹田轉動)
This creates:
👉 上下相反，內外相合
(opposite up/down, but internally unified)
Final summary
In Wu-Hao Tai Chi, the “big circulation” means the body operates as a continuous yin–yang loop:
the legs generate upward yang,
the hands express through downward yin,
and the dantian coordinates the circulation.This crossing of opposites creates a stable, non-linear force that is alive, adaptive, and difficult to resist.
Short answer: yes—both pairs happen at the same time, but not as two separate actions. They are one integrated process (一動無有不動 yi dong wu you bu dong) expressed as yin–yang within the same movement (陰中有陽，陽中有陰).
Let’s clarify precisely.
1. Legs: rising (陽升) and sinking (陰沉) — simultaneous?
Yes, simultaneously.
Yin (陰) → sinking/rooting into the ground (沉 chen / 根 gen)
Yang (陽) → rising force from the ground (升 sheng)
But:
👉 You are not doing two actions
👉 You are creating one condition
What it really is:
When you “sink” correctly:
The ground gives you reaction force upward
So yin sinking naturally produces yang rising
This is exactly:
其根在腳，發於腿
(root in the feet, issued from the legs)
So:
No sinking → no rising
No rooting → no power
👉 They are cause and effect in one instant
2. Hands: opening (陽開) and sinking (陰沉) — simultaneous?
Also yes, simultaneously.
Yang (陽) → expanding, opening outward (開 kai / 掤 peng quality)
Yin (陰) → sinking, returning inward/downward (沉 chen / 收 shou)
But again:
👉 not two movements
👉 one integrated state
What it feels like:
The arm expands in all directions (not just forward)
Inside that expansion, there is weight dropping and settling
So:
If you only open → you float (飄)
If you only sink → you collapse (塌)
👉 True state:
開中有沉，沉中有開
3. Why this creates spiral (螺旋 luo xuan), not linear
Because:
Legs: ↓ (yin) + ↑ (yang)
Hands: ↓ (yin) + → / outward (yang)
Dantian: rotating (轉 zhuan)
These combine into:
👉 three-dimensional circulation (立體循環)
👉 not front-back pushing
So the body becomes:
not a line → but a field (勢 shi)
not a force → but a system of balance changes
4. Internal mechanism (very important)
This is the key Wu-Hao idea:
You do not “add” yin and yang
You differentiate within unity (一中分陰陽)
Meaning:
One structure
Internally has opposite directions
These opposites support each other
This creates:
👉 elastic force (彈性勁 tan xing jin)
👉 continuous adaptability (變化 bian hua)
5. In push hands (practical effect)
When done correctly:
Your partner feels:
pressure (because of yang expansion)
emptiness (because of yin sinking)
They cannot:
find your center
locate a direction of force
Because:
👉 your force is circulating, not issuing in a line
6. One sentence essence
The rising (陽升) and sinking (陰沉) in the legs,
and the opening (陽開) and sinking (陰沉) in the hands,
happen at the same time because they are not separate actions, but one unified yin–yang state expressed in different directions.
7. Even deeper (very Wu-Hao)
This is what your master is pointing to:
不是同時做兩件事，而是一件事裡面本來就有兩面。
Not doing two things at once,
but one thing that already contains two directions.
In Tai Chi, the hands do not move independently. Both hands are driven by the same source, the waist and the Dantian, the body's center. When one hand expands outward with Yang energy, the other hand simultaneously sinks inward with Yin energy. This happens because the waist rotates. The rotation creates a spiral force that travels up the spine and through the shoulders. As the waist turns left, the right side of the back opens, sending energy out through the right hand, making it expand or peng. At the exact same moment, the left side of the back closes, drawing the left hand inward and downward, sinking or chen. The two actions are not separate. They are one unified movement expressed through two hands. Think of wringing a wet towel. Your left hand turns one way and your right hand turns the opposite way. Both hands work together for a single purpose. The waist is the center of the towel. The hands are the two ends. This is how Tai Chi creates simultaneous opening and closing, kai and shou, without any delay or separation. To feel this, stand with feet shoulder width apart. Extend both arms in front as if holding a large beach ball. Without using your arm muscles, gently turn your waist to the right. Your right hand will naturally push forward and open. Your left hand will naturally bend and come back toward your body. Turn your waist left and the opposite happens. The hands are passive. They simply follow the waist. The key rule is that the waist moves first, then the hands express the result. Never move a hand with local shoulder or arm strength alone. Every hand movement is a visible expression of the Dantian opening or closing. When the expanding hand feels full and buoyant, the sinking hand feels heavy and rooted. One cannot exist without the other. They are a single circle of energy. This is how hands do simultaneously in Tai Chi.
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