God knows it, but man
It is a Chinese word, which means to really understand the mystery of something lies in everyone's understanding.
source
In the book of changes, it is said that "if the discipline is cut, the change will exist; if the action is pushed, the communication will exist; if the spirit is clear, the person will exist."
Examples
The 57th chapter of Li Baojia's officialdom in the Qing Dynasty: "I'll pay attention to it at any time and learn it slowly."
God knows it, but man
not give serious thought to anything - wú suǒ yòng xīn
untrammeled and romantic in character - tì tǎng bù jī
the breeze is fresh and the moon bright - fēng qīng yuè míng
a slow remedy cannot meet an urgency - huǎn bù jì jí
pay attention to one 's own moral uplift without thought of others - dú shàn qí shēn