《左传》有一则故事说,宋国有一个人得到一块宝玉,献于大夫子罕,子罕不受,献玉者愕然,说:「这是一块世上少有的宝玉,我费了不少力气才弄到手,今日献上,怎能不收呢?」 There is a story in Zuozhuan that one person in Song Dynasty got a piece of gemstone and offered it to the son of a son, who rarely felt uncomfortable. He was shocked by the offering of jade and said: "This is a rare gem in the world. I spent a lot of money How can you not get it when you give up today?