Clowns. What stem?

Clowns usually refer to clowns in China traditional operas, clowns, comedians or comedians in plays or other entertainment performances (circus clowns); Also refers to a contemptuous or despicable person: a buffoon, a political clown.

Source:

The source is an expression pack, which is growing stronger and stronger in Baidu Post Bar. Often used to refer to shyness, trying to please others but not getting any return and greetings.