Set an example
Yu Chenggong is an idiom and G é y ú ch é NGL ì in pinyin, which means that the purpose can not be achieved.
The interpretation is limited by traditional conventions. It means that the purpose cannot be achieved. it's from chapter 36 of the biography of heroes and Heroines: "only Mr. an knows that the flag man is not the only one who has never ordered Ding Jia. He has already got the letter in the top ten."
Set an example
be able to accept advice from one 's inferiors - cóng jiàn rú liú
his eyes are bigger than his belly - yǎn chán dù bǎo
relay on hearsay instead of seeing for oneself - yǐ ěr wéi mù