How to inform your friends about your happy grandson?

The ways to inform your friends about your happy grandson are as follows:

1. Write an invitation letter: Dear Mr./Ms. XX, I am pleased to tell you that my family has a grandson and would like to invite you to the full moon banquet. The invitation letter should contain detailed information such as time, place and contact information.

2. Call: Calling is a more direct way. You can tell your friends the good news in person and invite them to the full moon banquet.

3. Post news on social media: If you keep in touch with your friends on social media, you can post news that you have grandchildren on this platform and invite them to the full moon banquet.

Whichever way you choose, you should express your sincerity and gratitude and let your friends know that you welcome them.