What do you mean when the water is full, it will overflow, and when the moon is full, it will lose.

When the water is full, it will overflow; You will lose money when the moon is full; When things go to extremes, they will slide down and turn in the opposite direction.

When the water is full, it will overflow. It comes from Cao Qingxue Qin's Dream of Red Mansions, which means that things will change in the opposite direction when they reach extremes.

The monthly surplus is a loss, and the water surplus is an overflow: the monthly surplus begins to become defective, and the water surplus overflows. Metaphor means that things will decline at their peak.

The extremes of things must be reversed, pronounced as wù jí b ù f n, which means that when things go to extremes, they will change in the opposite direction.

Extended data:

When the water is full, it will overflow, and when the moon is full, it will lose money. The extremes meet similar words: happiness brings sorrow, and happiness brings tears. Taoist philosophy refers to yin and yang, which are opposite to each other. This cycle is born, and it does not die out in its inherent law. If you encounter extreme opposition, you are out. If you go out, you must create a bigger antipodal ground to enter. At this point, maybe the space is different.

Everything is a contradictory unity, and there are two contradictory aspects. When under certain conditions, a certain aspect of contradiction is dominant and decisive, things show the nature determined by it. But it also contains opposites, and will accumulate in quantity, and eventually occupy a dominant position, making things go to the opposite. The so-called "one thing becomes one thing's length, one thing is full of one thing's decline", which is the law of the development of all things.

References:

Baidu Encyclopedia-When the moon is full, it will lose money, and when the water is full, it will overflow.

References:

Baidu encyclopedia-extremes meet.