伤心不说难过吵架不说分手
[shāng xīn bù shuō nán guò chăo jià bù shuō fēn shŏu]
'No talk of sorrow when hurting, no mention of breaking up when fighting' indicates a preference for enduring hardship internally and not resorting to separation even during conflict, reflecting restraint or unwillingness to address issues openly.