Define epiphany?

How to define epiphany? It is "a sudden intuitive leap of understanding, especially through an ordinary, yet striking occurrence", that is what has happened to me on my latest visit to a Tai Chi master. Living in Taiwan has offered me an opportunity to see and experience the intangible in tangible form, and I intend to pursue it and understand it more.

A true master can demonstrate the Tai Chi Classics, without fault, without effort and more importantly, not fudge around or disregard those parts of the Classics that are not really understood by most. I now realize that those that fudge and disregard, actually do not understand them at all. The most difficult and esoteric parts of the Classics are actually some of the most important key points, and clear to understand when demonstrated by someone who knows how.

How many master's do you know that can clearly demonstrate this section from the Classics below in a practical and powerful way?

力從人借，氣由脊發。胡能氣由脊發? 氣向下沈，由兩肩收於脊骨，注與腰間。此氣之由上而下也，味之合。由腰行於脊骨，布於兩膊，施於手指。此氣之由下而上也，味之開。合便是收， 開即是放。能懂得開合，便知陰陽。

李亦畬

"Force is borrowed from the opponent, Qi is discharged from the spine. How can Qi be discharged from the spine? The Qi is sunk downward, then from the two shoulders, is drawn into the spine, being concentrated into the waist. The Qi moving from above to below, is known as Closing. From the waist the Qi is drawn into the spine, passes through two arms and out through the fingers. The Qi moving from below to above, is known as Opening. Closing is to gather, and Opening is to release. Understanding Opening and Closing, means knowing Yin and Yang."

Li Yiyu