这是两点成一线。这个一线是一点的伸开。然后保持不动（不变）再加一点，这样只加不减。这个模版不变，继续加。这就是伸开、拉开，没有推。严格的说没有用力（但是里面造出来只有对方知道的力）。当然我们的身体是有极限的，不可能永远这样【加】！
这就牵扯到间接力了。如果已经加到三点，可以用偷梁换柱的方法，同时再加一点/减掉原始的第一点。这样保证了任何时候有三点！
能做到以上，就是开始有太极劲了。这是最基本的入门劲。
上面的劲是定住（不动）两点，交换1和四。最终保证有三。
二级功夫是能保证定住三点，交换一和五。
三级功夫是能保证定住四点，交换一和六。
以此类推。
All joints between the two ends must be open. Only the hand against the opponent, and the foot against the floor compress.
At the beginning, when opening one joint, it forces a compression to the next joint. We must continue to open each of them until it reaches the end.
When doing fajin, only go to 80% extension.
The kua goes up to the inside towards the elbow.
Elbow, shoulder, kua are 1/3, 1/3, 1/3.
First half of the circle, push into the front foot, but the foot does not move.
Compass: one needle does not move at all, the 2nd needle is pinned to the paper but to the table. When moving the compass, the 2nd needle will move around the first needle dragging the paper. The 2nd needle moves on a track (specifically around the first needle).
Those are the 3 kinds of not moving:
First move of yilu: Vertical rotation inside a cylinder
Fist drape over body: I need to use the kua. Too much action at the top. Stretch the left kua, and deng the left leg.
Lean with back: Shoulder and torso needs to separate. The torso needs to slide under. Ka-deng (sound).
Use two high-back chairs to lock my shoulders and lock the arms, and let the torso drop.
Exercise:
