Nine out of ten
Nine things out of ten are idioms, Pinyin J ǔ sh í zh ī Ji ǔ, interpreted as knowledgeable.
Idiom explanation
Explanation: of the ten things listed, nine are familiar with them. It's a metaphor for erudition.
The origin of Idioms
Source: Zhang Shuo of Tang Dynasty said in the tablet of Wei Jun, the governor of Yuzhou in the past of Tang Dynasty: "the aspiration of a sage is to hear one thing and then turn against three; the ability of a gentleman is to raise ten things and then know nine."
Examples of Idioms
Example: teachers with both ability and political integrity naturally have a high prestige among students.
Nine out of ten
The man who tied the bell must be used to untie the bell - jiě líng xū yòng xì líng rén
in humble station with high talk - wèi bēi yán gāo
with roast turtle and minced carp - fèng biē kuài lǐ