Dear Tom,
I'm going to tell you about the table manners in China.You shouldn't point at anyone with your chopsticks.You can make a toast at the begining of the dinner,you can't stick your chipsticks into your food.And it's rude to speak loud on the table,I think it's best to wipe your mouth with the napkin every time you take a drink.
I hope the message can help you,and I hope you will have a great time in China.
Best Wishes,谢谢。