You said in the original text: I went to a boy's house for the first time, and I don't know if his parents don't like me or not. I don't think so.

The local custom is to give you a "mouth change fee". To put it simply, if you go to his house, you won't be given money if you call your uncle and aunt, and you will be given money if you call your parents. Of course, there are some cases where you don't give it, depending on whether you change your mind.

The time and amount given are different, ranging from 100 to thousands of dollars per parent.