披肝沥胆

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

to drape over one's shoulders / to open / to unroll / to split open / to spread out

liver / CL:葉|叶[ye4],個|个[ge4] / (slang) to put in long hours, typically late into the night, playing (a video game) / (of a video game) involving a lot of repetition in order to progress; grindy

to drip / to strain or filter / a trickle

gall bladder / courage / guts / gall / inner container (e.g. bladder of a football, inner container of a thermos)