Oooh! That's warmth flooding his chest. "Hey, Hanguang-jun," Magnus says, pronouncing it perfectly, and walks over to Lan Wangji. He stuffs a metaphorical hand into his mouth then to prevent himself from adding, I've brought your granddaughter to see you, but he does ease Drosera into his lap as he sits. "I can understand you again!" Now that his hands are free, he's signing as he talks -- he wants to be able to communicate with Lan Wangji if something like that ever happens again.