TTEscrima

I've never heard that from anyone who knew what they were talking about, the classics are extremely clear that Yin and Yang are two components that combine to create one movement. While one part of the body is executing a yin movement the other parts of the body are doing the complementary yang movement and vice versa. One needs to look no further than the Classics to see that this idea is the foundation of all Tai Chi.


"In motion all parts of the body are light nimble and strung together.

The Chi should be excited, the Shen should be internally gathered.

Let the postures be without breaks or holes, hollows or projections, or discontinuities and continuities of form.

The motion should be rooted in the feet, released through the legs, controlled by the waist, and manifested through the fingers, the legs and waist must act together simultaneously, so that while stepping forward or back the timing and position are correct.

If the timing and position are not correct, the body becomes
disordered, and the defect must be sought in the legs and waist.

Up or down, front or back, left or right, are all the same, these
are all Hsin and not external.

If there is up, there is down, if there forward, then there is
backward, if there is left, then there is right.
If the Hsin wants to move up, it contains at the same time the downward idea.

By alternating the force of pulling and pushing, the root is surely severed and the object is quickly toppled, without a doubt.

Insubstantial and substantial should be clearly differentiated.
One place has insubstantiality and substantiality, every place
has the same insubstantiality and substantiality.

All parts of the body are strung together without the slightest break

Tai Chi is like a great river rolling on unceasingly.

Peng (Wardoff), lu (Rollback), Chi (press), An (squeeze), Tsai (pull), Lieh (split), Tsou (elbow), Kao (shoulder) are the eight triagrams.

Step forward, step backward, look left, look right and central equilibrium are metal, wood, water, fire and earth.

Together these comprise the thirteen postures."

Unfortunately there has been a mud slinging contest between the Chens and every other Tai Chi family for centuries, the Chen style was never considered to be true Tai Chi by the other families because of it's external properties. The Chens were the closest village to Shaolin and thus their style was influenced by the external applications of Shaolin. This disagreement caused many lies to be told and misinformation to be spread by different clans for centuries. It's quite simple really, if a system fails to follow the above principles it isn't Tai chi no matter which family it comes from. People should be careful to study the classics and make sure they aren't just repeating misinformation created in a propaganda war centuries ago.