each in his element
Chinese idiom, Pinyin is g è Q ǔ Su ǒ ch á ng, which means to be good at using the strengths of things or people. From Zhenguan Zhengyao.
The origin of Idioms
In Zhenguan Zhengyao written by Wu Jing of the Tang Dynasty, it is said that "people are like utensils, and each has his own strong points."
Idiom usage
Used as a predicate, object, or attribute.
each in his element