The heart of the eye
It means that you have to work hard. The metaphor is full of thought.
pronunciation
guìmùxùxīn
source
The epitaph of Mr. Zhenyao written by Han Yu of Tang Dynasty: "it's a poem, and it's a heart."
Examples
Han Yu describes Meng Jiao's bitter chants with such phrases as "to" and "take out the stomach and kidney". This is what later generations call "painstaking efforts". ★
Guo Moruo
Li Bai and Du Fu · the communication between Li Bai and Du Fu in Poetry
usage
It can be used as predicate and attributive; it can be used in written language, and it can be omitted as "Gui".
source
Li Dongyang's Lu Tang Shi Hua: "Li Changji's poems are intended to be handed down from generation to generation, but they are too simple and natural. “
The heart of the eye
to cast out the wicked and cherish the virtuous - jié zhuó yáng qīng
a master butcher sees through parts and joints of a cow without cutting - mù wú quán niú