Visible crew/equipment: When they are breaking out of the jail cell, when he opens the door, there is a person that holds the door open.
Visible crew/equipment: During Chon Wang's battle at the bell tower, he is hanging onto a board in one shot, and you can see a large net under him, in case Jackie Chan (who played Chon) fell.
Answer: In the Qing Dynasty (which was in power at the time the film was set), all soldiers were required to wear the Manchurian hairstyle of the queue (Chon Wang's "pony tail"). Cutting off his queue ensured that he would not be able to fight in the Chinese army for a while.