你说轰轰烈烈不长久我说平平淡淡才是真
[nĭ shuō hōng hōng liè liè bù zhăng jiŭ wŏ shuō píng píng dàn dàn cái shì zhēn]
It means 'You say passionate romances don't last long, I say calmness and ordinariness are the reality.' It expresses a different perspective on life or relationship that contrasts fiery romance against everyday realism.