"Mm." Shen Yuan doesn't move a single millimeter. He's comfortable now, and he's not going to look into it any further than that.

...Well. Maybe there is one more thing to consider. "Does Lan-gongzi intend to stay the night, in that case? This one has no objections... actually, I'd prefer it. It's cold and unsafe outside just now, and this one would blame himself if anything happened to Lan-gongzi on his way home in the dark."

He sounds perfectly calm about this, too emotionally burned out to even get embarrassed. He doesn't want Lan Xichen to go, and there are several very good reasons why he should say.