What do you mean by drawing lots for exams?

Shi Niu's pioneer is not an idiom.

It should be a propaganda language for religion, a little-known tactic in history, or an introduction to scenic spots.

Religiously, the stone cow was born lucky.

This plan came from the war that Qin annexed Shu,

This scenic spot is a story made up by a stockade named Shi Niu in China.