What on Earth? Now they're not only in this position, but floating to what, give everyone a better view? He pulls Wei Ying into a chokehold, trying to twist one arm behind to pin him there, flapping his wings more to cause a ruckus than to do anything useful.

And maybe, just maybe, he'd like to cover them from the rest of the crowd so they don't see this absolutely shameful position they've found themselves in, particularly as the roughness is not really deterring Lan Wangji from getting a little bit... aroused.

Thankfully, only Wei Ying would notice it, but he's sure he'd use it to his advantage, so he also casts... a silencing spell.