Donnie Yen Ji-dan is a Hong Kong actor, martial artist, and action director. One of Hong Kong's top action stars, Yen is widely credited for bringing mixed martial arts into the mainstream Asian cinema by choreographing MMA in many of his films since the early 2000s. The first Chinese UFC champion Zhang Weili states that Yen's films introduced her to MMA. Yen has displayed skill in an array of martial arts, being well-versed in Tai Chi, Boxing, Kickboxing, Jeet Kune Do, Hapkido, Mixed Martial Arts, Taekwondo, Karate, Muay Thai, Wrestling, Brazilian Jiu-Jitsu, Hung Ga, Sanda, Judo, Wing Chun, and Wushu. One of the most popular film stars in Asia of the early 2000s, Yen is consistently one of the highest-paid actors in Asia. Yen earned HK$220 million from four films and six advertisements in 2013. Yen is credited by many for contributing to the popularisation of Wing Chun in China.