in my understanding,
YJKYM for SLT/SNT training is
a nature parallel feet ,
equal shoulder wide stance,
and the body weight rest on the external side of the legs,
with all legs joints loose up, sligly bend for aliveness;
So
Yee, or two, means parallel feet and egual shoulder wide,
the external side of legs is called Yang (male, positive) side.
it is shoulder wide because that is the optimal for human body in standing and moving the upper body.
it is parallel feet because that is optimal to loose up every joints of legs up to the hip-thight joints. which then influence the spine aliveness.
clamping Yang means rest the body weight in both of the Yang side of the both feets; that way the legs naturally “clamp” , and the out come is a body structure effortless and balancely “root/lavitate” on ground with ease.
all joints of the legs up to the hip-thight joints is loose and effortless. every part of the body is as light weight as feather.
That is the biomechanics.
For those who knows TCMA and Qi and medirians.
Clamping Yang comes naturally with loose and relax leg/lower body instead of using effort to clamping anything. that is because any tensing will disturb the qi flow.
just rest the body weight naturally to the external side, that way the ying side or the inner thigh side will be relax and allow 3 legs’ yin medirians’ qi flow up to the body and smooth lower abs breathing.
It has to be parallel feet because that is the only way to be able to get all legs to hip joints to loose up and open up the Hui Yin Ren and Du medirians for the small cosmic cycle and also other special medirians.
That is the Qi flow mechanics.
Thus, the YJKYM is doing something similar to the break dance above; it is
loose, with ease, nature, and fully support the upper body’s motion and power generation to flow with ease.
You dont have to believe me, try it and see for yourself.
It is my view, this stance has become a blind religion and dead.
it is like the evolution of spiritual to religion. first it is spiritual because that serve a needs then it becomes a religion and lost the spiritual part where every one has to obey it but it is not serving much spiritual at all.
When a stance is no longer nature but man made, you will never see it in the mmA match. if it can support dancing, forget about it to support fighting. so that training is actually useless and even damaging because it get one into bad habit which is un nature.
Just my 5 cents.