On the willows there, we hung up our lyres

Once it is clear that Galahad isn't going to object to his touch, Lan Wangji settles. This is an easy posture to hold. The room is silent and there is only the sound of the wind through bare branches outside the mansion. He can't shelter everyone the way he wants to, but he can shelter Galahad here, now, with him, and he can breathe. That can be enough for a time.