Finger Zen is a complete set of techniques. No additional auxiliary techniques are needed.
This is the strength of my family. The method of adjusting internal force with wrench.
The mother pile in Tai Ji Chuan is a rodless pile, and the advanced pile is Tai Ji Chuan.
Tai Ji Chuan is an activity of Gong Zhuang. This is the guiding method of entering the Tao.
If you really want to learn well, you'd better practice only one subject.