There are 13 core concepts at the heart of Taijiquan

There are 13 core concepts at the heart of Taijiquan (or Tai Chi Chuan). These are concepts of mental and physical energy and motion, such as Expanding Energy and Deflecting Energy.

Together, these 13 form the basis for all of Taijiquan. Come learn more at the Taiji Zen Online Academy:
http://goo.gl/vTxle1.