T'ai chi ch'uan (pinyin: taijiquan; Wade-Giles: t'ai chi ch'uan; literally 'Supreme Ultimate Fist'), often shortened to t'ai chi or tai chi in English usage, is a type of internal Chinese martial art practiced for both its defense training and its health benefits. It is also typically practiced for a variety of other personal reasons: its hard and soft martial art technique, demonstration competitions, and longevity. As a result, a multitude of training forms exist, both traditional and modern, which correspond to those aims. Some of t'ai chi ch'uan's training forms are especially known for being practiced at what most people categorize as slow movement. Chengdu, known formerly as Chengtu, is the capital of Sichuan province in Southwest China. In the early 4th century BC, the 9th Kaiming king of the ancient Shu moved his capital to the city's current location from today's nearby Pixian.