The three disciples of Niu Chunming still living in Hangzhou are Meng Xianming and Ding Shuide and Yen Zhanfu. It was our good fortune that Master Yen gave us a tutorial on Pushing Hands.
This included great detail on the philosophical concepts and hands on practice in a range of formats. Some extremely valuable insights have added another entirely new perspective of Tai Chi. It helps explain how Master Liu does what he does.
There are a great number of very subtle aspects involved. Some time wil be needed to incorporate them into all the forms but already the results are significant.