Wei Wuxian tries to think. If he has been blinded then perhaps it isn't as sinister as he originally thought. "Lan Zhan..did they take your ability to talk? Just nod if they did." The man doesn't seem to be in any sort of distress so clearly nothing terribly violent has occurred. One hand remains on the other's face so that he can feel the answer.

If that is the case hopefully the other man still has his sight. At least then Wei Wuxian will have a set of eyes that can guide him until this all wears out.