Chinese-style social etiquette, I have summarized 14 points. Feel free to add more.

1. The more friends you have, the more you may suffer losses.
2. The closer the relationship with relatives, the more you might suffer losses.
3. Marriages without intimacy between spouses won't last long.
4. If your monthly salary is less than 10,000, never buy a car.
5. Do not tell anyone about your pregnancy in the first three months.
6. A petty person will always be a petty person; stay far away from them.
7. The more someone complains, the more secrets they hold.
8. 99% of relationships are built on financial interests.
9. Do not develop feelings for your friend's wife.
10. When riding someone else's carpool, do not sit in the passenger seat.
11. Do not hire acquaintances for house renovations.
12. Never reveal your marital issues to outsiders.
13. Do not criticize your children in front of outsiders.
14. Family scandals should not be exposed publicly.