1. First of all, thank your relatives and friends for coming to your engagement party. You can say some polite words, but you have to say them anyway.

2. Then it is mainly to put in a good word for the woman's parents. You should reassure them that their daughter has been given to you. For example, "don't worry, uncle and aunt, I will treat XX well in the future." I won't bind her because I'm married. I will come back to see you as soon as I have time. Thank you here, too. Without you, there would be no XX, and thank you for letting me meet her.

Generally, there is nothing to care too much about. Let it go. The more nervous you are, the more you will show your face. It won't be good then.