Was Bruce Lee ever defeated in real life?

Historically, Bruce Lee never participated in a real fighting competition. There are several cases of private fights that can be verified as follows:

1. When a martial arts gym was opened in the United States, a Chinese boxer surnamed Huang kicked off the gym and competed with Li. After the fight started, Huang ran around all over the place, and Li was there. Chasing from behind, Li's back was scratched by Huang in the chaos, but Huang did not dare to confront Li and finally admitted defeat. Afterwards, Li felt that Wing Chun had many shortcomings and founded Jeet Kune Do. This story was exaggerated and made into the movie "The Legend of Bruce Lee", which was artistically processed.

2. Li fought against the flyweight boxing champion surnamed Liu in Hong Kong. Li won, but his opponent was very weak.

3. During the filming of "The River", Li competed with the American five-time world karate champion Luo Lishi. It is said that Li defeated Luo with points. Luo also said afterwards: fighting Li was tantamount to suicide. This is Li's most valuable competition.

4. When San Mao (Sammo Hung) was young, he challenged Li on the set. Later he recalled that Li's kicking skills were indeed very fast. Before his punch could hit, Li's leg had already kicked in front of him. But the real situation cannot be verified.

There is another saying that when Li opened the martial arts gym, he was hit by the fast kick of a Muay Thai master, which cannot be verified.