Lan Wangji notes Jingyi's near perfect form in his mind with a sort of rueful fondness. He's glad that Jingyi is always Jingyi, no matter the universe, but also amused at how much he would have been made to do the exercise to be so good at it.

Watching Jingyi sort his forehead ribbon makes Wangji miss his own, but he puts that aside for the teaching about dragons.

"So a person would inherit both parent's colouration or just the one?" He understands some genetics but he has no idea how that holds up to a fantastical being that has to be awakened to appear.
"Are some elements more prized than others?"