When you meet, you should say congratulations on getting rich first, and then send gifts. The leader asked you to sit in the room and say thank you. When he pours you tea and invites you to dinner, you should say thank you. You're welcome ... don't say I don't eat or don't need it. Don't sit in the seat (facing the other side) when eating, let the leaders sit in their arranged positions. You can't move chopsticks first ... go back and say hello to the leading family and thank them.