Zhang Sanfeng is a semi-mythical Taoist master said variously to date from either the late Song dynasty, Yuan dynasty or Ming dynasty. His name was allegedly 張君寶 before he became a Taoist.
His Taoist name in Traditional Chinese characters is 張三丰, but is usually written as 張三豐. Both are zhāng sān fēng in pinyin and Chang San-feng in Wade-Giles.
Much of the written material about him is mythical, contradictory, or otherwise suspect. For instance, he is reported to have been born in AD 960, AD 1247, and again in AD 1279. He is described as being seven-feet tall, with the bones of a crane and the posture of a pine tree, having whiskers shaped like a spear, and being able to cover 1000 li in a day. He is reputed to have worn a straw hat, but one village reports that the hat was actually a cymbal, which only residents of the village (famous for manufacturing cymbals) had permission to sound upon meeting him.
Many today consider Zhang Sanfeng, if not to have been a verifiable historical figure, to be a legendary culture hero of sorts, credited as having originated the concepts of Nei Jia; soft, internal martial arts, specifically Tai Ji Quan as a result of a Neo-Confucian syncretism of Chan Buddhist Shaolin Quan with Taoist Qigong principles. He is also associated in legend with the Taoist monasteries at Wudangshan in Hubei province.
More reputable sources record two Chinese emperors sending missions to Zhang Sanfeng to ask for his advice, although neither mission is reported to have found him.
Owing to his mythical appearance, his name frequently appeared in Chinese novels and films of swordsmen as a master of martial arts.
The legend's name was made widespread (perhaps) in the Western Hemispehre through Jet Li's 1992 portrayal of Zhang San Feng and the invention of Tai Ji Quan. This movie was known in China as "太极张三丰" (Tai4Ji2 Zhang1San1Feng1 - Supreme Ultimate Zhang San Feng), though the foreign release was aptly named The Taichi Master. A heavily edited and dubbed US release exists in which Jet Li and Michelle Yeoh (known best for her work in Crouching Tiger, Hidden Dragon) are featured on the box art as being "Twin Warriors."