人心躲不过善变情深躲不过久伴
[rén xīn duŏ bù guò shàn biàn qíng shēn duŏ bù guò jiŭ bàn]
It translates to 'One can't escape from people's changing hearts; deep feelings can't resist long-term companionship.' The phrase conveys the belief that people are changeable by nature, but true emotions thrive with constant support and understanding.