wù​jí​bì​fǎn

things turn into their opposites when they reach an extreme

Senses

物极必反/ 物極必反 wù​jí​bì​fǎn things turn into their opposites when they reach an extreme

things will develop in the opposite direction once they reach their limit; extremes breed reversals

References

variant 物极必反/物極必反 物极必返/物極必返
variant 物极必反/物極必反 物至则反/物至則反