Asmodean has largely stayed indoors since his recent bout of misfortune outside, continuing to keep to himself for the most part as well. Lessons learned, he supposes, and a great deal of work to do yet.

So he's exiting the library when Lan Wangji happens to happen upon him. He has no reason to think that the other man would wish to speak to him, and every reason to think that he wouldn't, so he simply offers a cordial enough nod, intent on continuing on his way.