[Again things mentioned he lacks context for, a strange reaction, and no answers.

But, he didn't feel like fighting, he didn't feel like being difficult either. He just felt tired and overwhelmed. So, he stood up, but paused a moment first.]

Lan Zhan, what are you keeping to yourself? What do you know about me?

[If he too knew about....

He turned to go back into the room, retrieving the precious flower then tossing it at Lan Wangji.]

Here, have your memento. She is a kind and lovely girl.