A legendary culture hero, Zhang Sanfeng is credited by modern practitioners as having originated the concepts of neijia (內家); soft, internal martial arts, specifically T'ai chi ch'uan, as a result of a Neo-Confucian syncretism of Chán Buddhist Shaolin martial arts with his mastery of Taoist Tao Yin (neigong) principles. It is said that on one occasion Zhang Sanfeng observed a bird attacking a snake on Wudang Mountain and was greatly inspired by the snake's defensive tactics. It remained still and alert in face of the birds onslaught until it made a lunge and fatally bit its attacker. This battle inspired him to create a 72-movement T'ai chi ch'uan “set. He is also associated in legend with the Taoist monasteries at Wudang Mountains in Hubei province.