WingTsun Kung-Fu is one of the most intricate and scientific systems of martial arts to date that was created by a Buddhist nun close to half a century ago.

The International WingTsun Association (IWTA), headed by Great Grand Master Leung Ting, is the largest single style martial arts organization in the world that spans over 70 countries.

Due to its practical nature and all-round training (striking, close range combat, submissions and ground fighting), WingTsun (WT) has proven to be one of the most effective styles in no-hold-barred combat and is currently being taught to special police forces and anti-terror groups around the globe.

The Iranian WingTsun Organization (IWTO) is the only recognized and valid branch of WingTsun in Iran. The head of the IWTO is
Sifu Shirouyeh Hassanzdeh who is a 3rd degree technician of WT and is currently the only man in Iran to go by the title 'Sifu' which means father in Chinese. All of the other so called WingTsun styles and instructors in Iran are off shoots of the WT system and are internationally unaccredited.