hide one 's candle under a bushel
As a Chinese idiom, Pinyin is B ù L ù f ē nghu ì, which means that the ability is not exposed. It comes from MengXiBiTan · bubitan.
The source of the idiom is "MengXiBiTan · bubitan" written by Shen Kuo of Song Dynasty: "Kou Zhun is able to judge major events, regardless of minor points; he is able to show his talent with a strong hand.
hide one 's candle under a bushel
live on the labour of others - yī lái shēn shǒu,fàn lái zhāng kǒu
suit one's measures to local conditions - yīn dì zhì yí
look upon human lives as if they were grass - cǎo jiān rén mìng