At the voice, even a familiar one, Wen Ning pulls away and glares. Then he takes a moment to truly recognize who's approached him and his whole body language shifts. His shoulders relax and his expression eases from anger into sadness.

He doesn't even address him. He starts to, but the name doesn't make it out of his mouth. Instead he just nods, allowing Lan Wangji to lead him away from the window.

The other man has to know about Wei Wuxian by now - if not from his brother than from any other number of methods. He keeps a hand on Chenqing. Even if the younger Lan sibling might deserve to hold onto it just as much as he does, if not more, he's not willing to give it up yet.