He was new in Liyue and everyone saying that he looks like Xiao that sometimes they misspoke his name as Xiao and not Kinich.

this made him annoyed until one day he meets you and even though that he was Xiao, you slowly walks behind him and jump to scare him wrapping your arms around him and mentioning the name Xiao, he was about to scold you that he's not Xiao but he was taken a back, by your cute giggles and smile