Heart and blood
Chinese idiom, Pinyin L ò UX ī n ǒ uxu è, means to describe painstaking design. It's from Sheng'an poetry talks - fake poetry.
The origin of Idioms
Yang Shen of the Ming Dynasty wrote in Sheng'an Shihua, a false poem: "such a Hun generation, all empty chant, life painstaking, but five or seven words short law."
Idiom usage
As a predicate; used in composition, etc
Heart and blood
a person in a high position is liable to be attacked - shù dà zhāo fēng
estimate one 's own moral and material strength - duó dé liàng lì
be reputed and rise up to prosperity - fēi yīng téng mào