Are all the people in Tongling immigrants?

Depends on your situation. Your wife's family is too particular about rules, mainly because the old people at home are too particular about rules. The rules in every small place here are a little different, but the overall situation is similar. Some enlightened people keep everything simple, while some proud people still do so.

In our general family, if a daughter gets married, there is a process of recognizing relatives before marriage. The daughter took her son-in-law to several close relatives' homes to recognize relatives. You must bring gifts when you recognize your relatives. (This is a little different. In some places, relatives will give money to their son-in-law, while in others, there is no such rule. Also, children who meet relatives in the process of recognizing relatives have to be given red envelopes.

Those birthdays call your family, not everyone. The woman's family really doesn't care about anything, just what she marries

Don't bother, there will be others in the future. After the daughter gets married, go back to her parents' house and invite them to your wedding room (inviting her to dinner is another expense). After the holidays, I will send holidays to my elders.

Generally speaking, there are so many rules.