What Donnie Yen did was not free fighting, but mixed fighting. In fact, free fighting is Sanda. The rise of Sanda in China is relatively late, but the organizers are lazy and unwilling to absorb the essence of China Wushu. Because China's martial arts are too complicated and difficult to practice, they simply abandon them and choose simpler free fighting to change the face of China people, which has become the so-called "China Kung Fu". Actually, it has nothing to do with China Kung Fu. In fact, it doesn't matter what martial arts you choose, the key is to practice on your own. I am also in Shanghai. Putuo District is an urban area with relatively developed traffic. You can go online to find many martial arts schools, all of which are not particularly far away from you.