when the fullest extent is reached , waxing is definitely followed by waning
In Chinese, Pinyin is y í ngz é B ì Ku ī, which means that when the moon is full, it is when the moon is short. When things go to extremes, they will turn back. It comes from Lu's spring and Autumn Annals.
The origin of Idioms
In Lu's spring and Autumn Annals, Lu Buwei, Wei of the Warring States period, it is said that "the whole will be deficient, the extreme will be reversed, and the profit will be lost."
Idiom usage
As a predicate or attribute; used to admonish
Analysis of Idioms
When the moon shines, it will eclipse
when the fullest extent is reached , waxing is definitely followed by waning
Helping the weak and weeding the strong - jì ruò chú qiáng
pursue good fortune and avoid disaster - bì huò jiù fú
flutter in the wind in the wind - yíng fēng zhāo zhǎn