According to Cung Le, a famous Mixed Martial Arts fighter, “In the old days, if you wanted to announce yourself as a boxer in a new village, you built a lei tai, stood on it, and invited all comers to try and knock you off.” Some fighters issued their challenge in the form of a hand written letter to the person they wished to face. This form of challenge was illustrated in the movie Fearless, when Jet Li's character challenges another warrior to a fight. The book "Ultimate Sparring: Principles & Practices" comments, "martial artists conducted ‘Challenge matches’ the lei tai to test each other's skills, because of a personal dispute, or to prove one martial system’s superiority over another system." Either fighter lost the match and his credibility if he fell, was forced off or was knocked to the floor of the stage. As a result, no one would want to learn boxing from him. The winner of the bout became the "owner of the platform" and remained on stage unless he was forced off himself. If there were no more challengers, he became the champion and or established the dominance of his style in that area. Another way was to defeat an already established master on the lei tai and then take over his school.