Quick Emergency Contact AU bonus before I go to make coffee: Jiang Cheng finds out Wei Ying and Lan Zhan are for-real dating now two days later, when he goes to put an extra blanket on a napping Wei Ying and mostly-asleep Wei Ying whines "Sweetheart, come hold me."
Wei Ying cracks open an eye when no one comes to hold him and then they stare at each other for a good thirty seconds.