Wu Qin Xi was created by Hua Tuo at the end of the Eastern Han Dynasty. Hua Tuo’s contributions to physical fitness and health preservation were outstanding. Based on the theory of the "Inner Classic" (Nei Jing) of traditional Chinese medicine, the theory of Yin-Yang and the Five Elements, and the movement patterns of the body's organs, meridians, Qi, and blood, Hua Tuo observed the habits and postures of various birds and beasts. He selected the characteristics of the tiger (fierce), deer (agile), ape (intelligent), bear (steady), and bird (harmonious) to form the Wu Qin Xi routine. This is a health-preserving Qigong that combines internal and external cultivation, perfecting the ancient (导引) and Tu Na (吐纳) breathing exercises