Wei Wuxian grins and presses his mouth to the same place high on his throat where Lan Zhan had left a mark, sucking, but only light enough that the pink skin will fade by morning. Then he slithers lower, fixing his mouth to the white skin next to Lan Zhan's chest scar and pulls the skin between his lips as firmly as he can, leaving a mark that will last for a week, if not longer.

He pulls back, breathless, grinning in satisfaction when the blood rushes angrily already from burst vessels, leaning down to give the soft skin of Lan Zhan's side the same treatment. Low on his hip will be next - he feels these marks everywhere, no matter what he's doing, for the near future.