呕心吐胆 (嘔心吐膽) ǒu xīn tù dǎn

ǒu xīn tù dǎn set phrase to spit out your heart and guts; work your heart out
Domain: Idiom 成语
Notes: Variant of 呕心沥血 (Guoyu '嘔心吐膽')