The operation steps are as follows:
1. First enter the group and click on the three bars in the upper right corner.
2. After entering the group chat settings, click the group chat member box below.
3. Then click on the search box to search for nicknames to find each other.
4. Click on the other party to enter the personal business card after finding it.
5. After entering, click Send Message in the lower right corner.
6. Finally, enter what you want to send, and then click Send.