The text surprises him nearly as much as Jin Ling had when he had shown up unexpectedly at his door. Meng Yao is in the process of wording a reply - he wants to say yes so badly, but his encounter with Lan Wangji is making him cautious. As much as he wants to see his nephew, does he have the right?

No. However Jin Ling does have the right to choose who he visits and when. The knock makes his heart race and he hurries to answer it, softening immediately. Relief is his first emotion, but he is confused and worried too.

"Are you -" he starts, forgetting his manners in a fit of concern, "Come in if you like. I'm relieved to see you."

Whole and...himself. Yes, he feels like Jin Ling again.