Good teeth and sharp teeth
It's a Chinese idiom, Pinyin is n é ngy á L ì ch ǐ, which means to be eloquent and good at words. It comes from Xiao Xiang Yu by Yang Xianzhi in Yuan Dynasty.
Idiom explanation
He is good at speaking.
The origin of Idioms
In Yuan Dynasty, Yang Xianzhi's the rain of Xiaoxiang, the second discount: "look at your sharp teeth, you say I'm guilty."
Good teeth and sharp teeth
a piece of work embodying one 's utmost effort - liáng gōng kǔ xīn
about to speak , but saying nothing - yù yán yòu zhǐ
cherish the old and care for the poor - xù lǎo lián pín
as soon as the sun reaches the meridian it declines - rì zhōng zé zè