Locals laugh many times when they don't understand something or when are embarrassed. Their
sense of humor is often primitive to me and to my primary school kids

Your primary school children think that the 'local' sense of humor is primitive?

I've been here for over a decade and speak Mandarin but I have great difficulty understanding Chinese humor. Humor is notoriously difficult to translate.

Kudos to you and your elementary students for this amazing cross-cultural understanding.

While you are at it, perhaps you or one of this forum's subjects of the Queen can explain to me what is so hilarious about a man wearing a dress.