Day and night
Chinese idiom, Pinyin is zh ā och é NGX ī Hu ǐ, which means to describe the speed of renovation. It's from Imperial science policy.
The origin of Idioms
Su Shi, Song Dynasty, wrote the imperial policy of trial production. "The cost of the imperial palace is no less than that of the enemy country. The work of the imperial palace is made day by day and is destroyed day by day, so as to make it new."
Idiom usage
As an object or attributive, it means to change quickly.
Day and night
Do what you know you can't do - zhī qí bù kě ér wéi zhī
make a harmonious and orderly home - yí shì yí jiā
lament to heaven and knock one 's head on earth - hū tiān qiāng dì
A journey of a thousand miles begins with a single step - qiān lǐ zhī xíng,shǐ yú zú xià
broaden sources of income and reduce expenditure - kāi yuán jié liú