心跳在那些不朽间化为虚无
[xīn tiào zài nèi xiē bù xiŭ jiān huà wéi xū wú]
An poetic expression reflecting deep emotions, possibly heartbreak. The title means something along the lines of 'Heartbeats turn into nothingness amongst the immortal.' The user might be trying to express feelings that once seemed powerful have lost their meaning or significance in retrospect.