They take turns on any given day, the two of them: who will be the unstoppable force and who will be the immovable object. Last time they clashed during a siege, Emilia ended up paralysed and Lan Wangji burned.

She considers the best move here from a tactical perspective. What burning the corpse in this moment, before a husked Lan Wangji no less, would do. How he would fare when they've only just begun.

Holding off for now, she does say,

"A small burden that would nonetheless slow you down."

Unless he has a Hermes bag he's not telling her about.