ANCIENT CHINESE LOCKS

An ancient Chinese style lock, inspired by a hurried glimpse in the film and television drama, I don't know if the specific principle is correct, because I just saw the action of the characters in the play to unlock the lock, and the picture is not very clear. So this is just my conjecture, and it doesn't mean that the actual thing of the ancient lock is the same. But the whole structure should have been made by ancient craftsmen. You can't look at it from a modern point of view, you think it's simple, useless, and the technology is not the same, and it's not simple in terms of ancient materials and processing technology.