Yuen Chai Wan | Vietnamese Wing Chun Kung Fu | Si Lim Tao Form Yuen Chai-wan - alias Nguyễn Tế-Công - Older brother of Yuen Kay-san, Yuen first learned Wing Chun Kuen under Fok Bo-chuen and later continued his studies with Fung Siu-ching. In 1936 he was invited to teach Wing Chun in Vietnam at the Nanhai and Shunde Expatriates Associations and moved to Hanoi, where he was known by the Vietnamese pronunciation of his name, Nguyen Te-cong. In 1954 he relocated to Saigon (now, Ho Chi Minh City) where he established a second school. Mann Family School of Kung Fu U.K. Sifu Sean Mann