Ye Chuli died, came back to life, and happened to land right in her archenemy's hands, becoming his spirit pet.
The first day they met
Liu Qinghan: Hey, cub, call me Daddy.
Ye Chuli: Sorry, starting today, I'm a mute fox.
The nth day after they met
Liu Qinghan: My little ancestor, please, stop being mad.
Ye Chuli: Paws out, scratch!
The nth day after they fell in love
Liu Qinghan: Husband, open the door. Can we please close the door and talk this out between ourselves?
Ye Chuli: ...Get lost, now!
As always, the seme is the main character, and the uke dotes on him.
Theme: Cultivate the Dao and live forever, never parting
