1. The word "red pants" stands for "training from childhood, good basic skills and practicality". The source of this word is Liyuan Hang, and all the little actors in the opera wear red pants, so "red trousers" has become synonymous with practical and good basic skills.
2. In Cantonese, "red pants" refers to the role of doing martial arts or dangerous actions instead of actors in the film, that is, stuntmen. Most of them come from Cantonese opera troupes, such as Jackie Chan and Sammo Hung.
The customs and traditions of each region and industry are different, and the specific meaning of "red trousers" will be different.