Lan Wangji glances up at him, then nods, and stays silent.

For another ten steps.

"The mirror. For the lures."

The subject change is obvious, he knows, and he hopes it will work all the same, allowing Wei Ying to retreat into a more comfortable topic of conversation - and talisman theory has often been that, for him.

"Could you use it to reflect what you saw, as well? For the other array you have been crafting?"