tāo guāng yáng Huì
Interpretation refers to hiding one's talents from exposure.
The source "The Book of the Old Tang Dynasty Xuanzong Ji": "The more secret the calendar and Huichang Dynasty are, the more they live in groups, which has never been said."
Structural subject-predicate
Usage subject-predicate type; As a predicate; Hide your talents, not expose them.
Synonyms keep a low profile.
For example, Levin's Biography of Hu Xueyan, a Red Top Merchant: "In recent years, he has kept a low profile, been cautious in his words and deeds, and has become more and more cautious in his work. He dare not promise anything he is not sure about. "