元朝有个文人叫胡石塘,很有才华,在当地颇有名气,但不拘小节。后来,他胸有成竹地到京城应试,元世祖忽必烈亲自召见他。上朝时,胡石塘的斗笠戴歪了,自己没有察觉。元世祖问他:“你平常所学的是哪些学问?” Yuan Dynasty has a man named Hu Shitang, very talented, quite famous in the local, but informal section. Later, he went to the capital with a well-thought-way examinations, Kublai Khan personally summoned him. On the North Korea, Hu Shitang’s hats wear crooked, did not notice. Yuan Shizu asked him: “What do you usually learn?”