Wei Ying, of course, sleeps like the dead, and so Lan Wangji moves to get him back to lying down, and comes with him, the two of them cuddled together for warmth and so he can listen to Wei Ying's heartbeat.

It's the most calming thing he can think of at the moment, the strong beat reverberating in his ears, connecting with his own heartbeat.

Soon, he's asleep again, arms and heart full of his husband.