He was a kung fu superstar in the 1980s and 1990s. After Stallone Arnold, he, jean-claude van damme and a guy with long hair and a big back made many action movies. It was all real hand-to-hand combat at that time. He won the world boxing championship, but he is a traitor.
In the era of P.S. videos, it was still a movie selling meat and boxing. You don't have to use your brain to watch the game. It is strange that imdb scores can be very high.