Is to isolate the motion of the *front knee. There is no one way to do this, but it is very difficult to do.
https://www.youtube.com/shorts/DK9bIkQg4ycHere you can see a perfect demonstration of the principle in action.
The knee can go up and down, but it cannot wobble side to side, or twist, it must work like a hydraulic jack, only moving up and down.
By loading the front knee with the weight of your torso, you keep the knee from buckling. This allows you to turn the upper torso independently of the lower.
This is in accord with Taoist principles, in order to generate power, there must be a yin yang separation. In this case, the legs are solid, the torso is pliant. That separation delivers great power and knocks the fuck out of the nigger.
There doesn't seem to be anything here yet