Jiang Wanyin is distracted, very briefly. That is all Lan Wangji needs. He makes quick and purposeful eye contact with Wei Ying and then with Magnus, but doesn't waste time speaking.

Bichen flies back into the air, the flat of the blade hovering parallel to the ground. With one hand in Magnus' and the other in Wei Ying's, Lan Wangji jumps onto it, pulling them with him, einherji tight against one side and husband tight against the other. He thinks for a dizzying and unpleasant moment of the dream that must have come from Luo Binghe, and then banishes the memory in favor of directing Bichen toward the mansion at the height of its speed.