The late Tai Chi Master Peng Sheng-Nan was a senior coach in the Chinese Tai Chi Institute (in Taipei, Taiwan) and a in-door disciple of the late Grandmaster Soong Jyh Jian, the founder of the institute.
Gandmaster Soong is a student of the late Grandmaster Wu Yu-Ting (a son of the Wu style Tai Chi founder) and Professor Cheng Man-Ching. He is well-known for his push-hands skill and his teaching emphasizes the so-called "principles of natural exercise" for developing the relaxed, soft habit of using mind rather than force. These principles, which include the concepts of "original space position" and "original body position", center around the idea that in Tai Chi Chuan the hands never move of themselves. All hand movements originate from the moving force of the waist and legs and one absolutely must not use the muscular force of the hands and arms. The path of studying Tai Chi Chuan must take relaxation, softness, and central equilibrium (or stability) as its training foundation.