有一种爱叫做挽留有一种爱叫做放手
[yŏu yī zhŏng ài jiào zuò wăn liú yŏu yī zhŏng ài jiào zuò fàng shŏu]
This means 'There's a kind of love called holding on, there's a kind of love called letting go.' It describes two different ways people cope with love - some cling to the relationship even when things turn sour, others choose freedom and walk away. It’s an evocation of emotional attachment and detachment.