懂中文 Dong Chinese

披肝沥胆

pī​gān​lì​dǎn

lit. to open one's liver and drip gall ; wholehearted loyalty

Definitions

披肝沥胆 (披肝瀝膽) 

pī​gān​lì​dǎn

lit. to open one's liver and drip gall (idiom); wholehearted loyalty

Sources