Don't complain about the puppies
Jin Ranyu needs some more gentling before he'll be in any condition to leave. Xi Zirui takes advantage of his cellphone from the first world being strewn over a couch to show him clips of the previous episodes in the hope of jogging his memory.
Like Cao Fei he reports having some vague second-hand recollection, but after Xi Zirui's and Han Yu's joined efforts to make him and Cao Fei recall enough of the events in this world so that they won't give themselves away he seems to feel more at ease with his current situation.
At ease, but not at peace -- something Xi Zirui can wholly relate to.
If Xi Zirui had to make a wager he'd guess he's more upset about Cao Fei not remembering whatever relationship they had in the third world.
From the way Cao Fei speaks, it seems like his feelings for his shixiong are completely platonic.