Wei Wuxian nods, frowning thoughtfully. and assessing what they have on hand.

"Cauterise. He's still barely conscious, we may as well since I doubt he'll feel it. Then we can get him moved somewhere safe." he decides, he pauses for a moment before looking up at the other man "Thank you, Song Lan, without you we might have been too late."

He thinks that's all that needs to be said, doubts Song Lan would accept anymore, so he nods at him and returns to his nephew's side.

"Jiang Cheng, hold him still, I'm going to get the arrow out," he explains, getting a flame talisman ready to seal the wound "then we're going to have to get him moving. Lanling or Yunmeng?"

He'll let Jiang Cheng decide, suspecting his brother might want to feel some sense of control right now.