Hsing I Ch'uan

75 year old Hsing-I  master Lyang Ke-Quan demonstrating Hsing I's Dragon style

Hsing I (also written Xing Yi), formally called "Hsing I Ch'uan", or "Form-Mind Boxing", is the oldest style that has been adopted into the "internal family" of Chinese Martial Arts. Perfering straight line motions, it is more direct than its sister arts of T'ai Chi and Ba Gua (Pa Kua). The art of Hsing I began around 700 years ago. It creation is credited to military genius, Yu Fei, who is said to have created the art to train his army in ancient China.

Recommended  Links:

http://www.emptyflower.com/xingyiquan/index.html