After the engagement, we can call them mom and dad and live together, but not every day, aboveboard. After all, there is no marriage certificate, and falling in love can't guarantee the future.
If you are eager to be together, you'd better not let people around you know, so that if something goes wrong in the future, you can keep your reputation and your parents can have face.
No matter where the parents of the man or the woman spend the night, they can arrange for their parents to live together, because legal marriage can be shared, and no one has any reason to say anything.
When you go to the woman's house, you must bring a gift to your house to show your respect. You can choose cigarettes, wine, fruits, etc. Of course, it is best to know her parents' preferences and then choose a gift according to their preferences. In addition, the number of gifts should be even, which shows your care in details.
Gifts don't need to be expensive. Discuss with her before buying a gift, and then give her what she likes. Finally, remind the woman to prepare a gift in return for the man to take away when he leaves, as a courtesy.