Dear Li Ming,
Glad to receive your email.
Here are a few etiquette suggestions for that family dinner you were invited to. First, you should bring a gift for your hosts, either a bottle of wine or some chocolates will do. Secondly, ensure that you arrive on time or earlier, as arriving late may offend your host. Thirdly, compliment the food. Also, don’t stay too long after the meal. Lastly, thank your hosts again before you leave.
I hope these help.
Kind regards,
Lily.