Ten years ago
"Xiao Xi, can you go home with your uncle? From now on, your uncle's home will be Xiao Xi's home."
"No, mom said, unless someone agrees to marry you, you can never go home with him."
"..."
"Okay, uncle promises you, we will get married when you grow up, and go home with uncle."
Ten years later
Some people return to city A as soon as they graduate and go straight to the territory of their "fiancé"
Once you feel in danger, declare your sovereignty: "I am his wife!"