"Mn." Wangji confirms, seeing as the horns are what he saw in the first place too.

"Perhaps he will only have a set number at a time. Quite a few have already run ahead so I'm sure that will lighten the load." He finds it sweet that she's so concerned about someone she doesn't even know all that well, it speaks of a soft but strong heart.
"I have yet to talk to him myself, so I do not know how many he can carry. If you wish to cross one of the smaller gaps I can help you, my energies are strong enough for that."

He doesn't want to leave her stranded if something happens.