心跳漏在你背影
[xīn tiào lòu zài nĭ bèi yĭng]
It roughly translates as 'The heartbeat lingers in your back'. It is an abstract expression used when someone is left feeling lost or wistful after someone else has walked away, highlighting a deep sense of attachment or regret. The heartbeat suggests one's emotional turmoil while gazing upon that person's retreating figure.