If Wei Wuxian ever stopped to think about it, he'd probably realize it's a trait he picked up from Shijie, who would always tap his nose, whether when he was a child, or just acting like one. So the gesture just feels natural, as does the smile that follows it.

"Right, no bubbles then," he shakes his head, reaching his hand under the faucet. He's sure Lan Zhan would hardly notice whether it was hot or cold, not with how frigid the cold pools of Cloud Recesses are, and sure enough, Lan Zhan has seated himself in a shallow pool of cold water. He huffs a sigh and pulls the plug for a moment, taking the time to adjust the temperature himself to something respectably warm and steaming before he pushes it back in.

"Not too hot?" he reaches over the tub to the pooling water and flicks a bit in Lan Zhan's direction.