Question

废寝忘食

Accepted Answer

fèi qǐn wàng shíto neglect sleep and forget about food (idiom); to skip one's sleep and meals; to be completely wrapped up in one's work;

Front	废寝忘食
Back	fèi qǐn wàng shí to neglect sleep and forget about food (idiom); to skip one's sleep and meals; to be completely wrapped up in one's work;

Sleep One's 废寝忘食 Fèi Qǐn Wàng Shí Neglect