分手前手牵手走分手后背对背走
[fēn shŏu qián shŏu qiān shŏu zŏu fēn shŏu hòu bèi duì bèi zŏu]
It translates to: 'Hold hands and walk together before the breakup, turn away from each other after'. This implies reflecting on a romantic relationship which has now ended. It's about moving on and leaving behind old memories.