expert
Expert, Chinese idiom, Pinyin is h á ngji ā L ǐ sh ǒ u, which means a person proficient in this business. It's from 20 years of witnessing.
Notes on Idioms
Expert: expert.
The origin of Idioms
Wu Jianren of the Qing Dynasty wrote in the strange situation witnessed in the past 20 years: "it's really an expert to criticize something's faults and say where it came from."
Idiom usage
A person who is proficient in this kind of business. We have to find an expert to fix it.
expert