First, let's agree to the premise which is:
Thought processes (and their projection through language) are congruent with bodily experience.Next, let's define our terms. "Yin" represents emotional-muscular flacidity or limpness and "Yang" represents emotional-muscular hypertonicity or rigidness. Therefore, a yin-yang body is one that is composed of a unique patterning of emotional-muscular flacidity/limpness (yin) and emotional-muscular hypertonicity/rigidness (yang). This is the typical or usual body of almost everyone (even many so-called internal-martial arts practitioners).
In terms of thought processes and the linguistic expression of these thought processes, the yinyang body-mind (person) operates from a position of duality or polarity. A body that is composed of a mix of emotional-muscular flaccidity (yin) and hypertonicity (yang) creates a perspective that is fundamentally dualistic (yinyang).
The second premise is that:
Everyone begins their Wujifa training with a yinyang body and through Wujifa training, progresses toward developing a Wuji body.
The Wuji body is one, unified body. Through years of practice, the state of flaccidity and hypertonicity (yinyang) resolves into a state of relaxed connection (Wuji). This means that emotional-muscular flacidity/limpness and emotional-muscular hypertonicity/rigidness are slowly* transformed into a unique state of relaxed connectedness. This is a different lived-experience of the body as compared to the lived-experience of the yinyang body.
( * Let me clarify "slowly". If a practitioner has a lot of resistance to changing existing emotional-muscular patterns, then working-through and getting rid of these patterns could take a long time. In fact, "getting it" happens spontaneously, instantaneously, like an on/off switch. You don't train to "get it", rather you train to get rid of that which prevents connection from showing up. This is a crucial distinction to understand!)
In terms of thought processes and the linguistic expression of these thought processes, the Wuji body-mind (person) operates from a position of connection or unity. A body that is composed of a unified structured connectedness creates a perspective that is fundamentally unified.
The student (with a yinyang body) who is able to grasp this concept will realize that it is misguided to believe that someone with a Wuji body is somehow "on the same wavelength". For example, a Wujifa student asking a question from a yinyang perspective may be answered from a Wuji perspective. Sometimes the answer makes sense and sometimes it doesn't (from a yinyang perspective).
And so now, after years of training, I am beginning to understand why my instructor thinks and talks so differently from the way many beginning students think and talk; from the way I used to think and talk. With each advancement I make, I realize that I am still just beginning to learn about the power of Wujifa internal gong-fu.
Happy practicing everyone!