Yuen-Ming wrote:Also, “Shaking Jin/Energy” is another of the various Jin/Energies of Taijiquan, again translated from the same text above for your perusal:
“Beyond these, there is also shaking. While sticking to the opponent’s energy with your own energy, use power from your hips to shake. He will pop up with both feet, which will come down clapping the ground with a sound like slapping a ball. Those who are particularly good at this will issue with extending energy before the opponent comes clapping down, and then once he has been shot away, he will also bounce up and down with several hops. This energy is therefore very subtle.”
Another note on translation. I've been taught how to shake and what is translated here is incorrect, so I looked at the Chinese and it explains it the way I was taught. Again, kudos to Brennan for providing the Chinese text. Here's a fairly literal translation.
卽用腰腿勁抖拍之。
That is, use the yao (waist/lumbar spine) and legs' jin (strength) to shake and slap them.