Yes, it needs to be sturdy.

[So that it doesn't break again if another fight happens.

The next question is a bit more puzzling. You might to go into more details in your questioning, Chu Wanning.]

He doesn't do physical fighting if he can avoid it, really... but as far as I know, he can use it the way most people would use a war fan. I don't think he has any particular techniques he uses it for.