清淡淡淡才会细水长流简简单单才会天长地久
[qīng dàn dàn dàn cái huì xì shuĭ zhăng liú jiăn jiăn dān dān cái huì tiān zhăng dì jiŭ]
Directly translating as 'plainly and quietly makes streams trickle endlessly; simply and purely keeps love everlasting,' it stresses values of understated beauty, simple living and enduring patience that leads to longevity in relationships, symbolizing sustainability from a low-key foundation.