Wu Hsin focuses on the transcendence of the body and mind, which results in sudden insight into one's true nature. It produces an involuntary reversion to one's essence, a clear seeing that there is no place that one can call the center or a reference point here. There is nothing substantial that would allow one to declare ‘This is where I begin, this is what I really am.’ It is the recognition that what one is is nothing perceivable. What makes this work of Wu Hsin such a rare find is that the articulation of his experience pre-dates, by many hundreds of years, the expressions of the great Channa (Ch’an) masters of the T’ang Dynasty, often considered to be the apogee of Chinese thought.
