Oh no, why he would not return? Grown-up has issues, don't they?

Lan Wangji nodded. "Let's look for Xian-gege. I don't know where is Yiling. Uncle won't let me travel far. I am Lan Wangji from Gusu Lan Sect. I will help you find them. Your family."

So together they're going to search around the hotel places from the theatre, the playground, and the arcade looking for them.