2. Open the WeChat group chat window, and then click and hold the "Group Announcement" in the lower left corner.
3. After long press, WeChat opens the options menu, and then click "Withdraw".
4. After clicking, WeChat opens the prompt pop-up window, and then clicks "Leave the group to be done".
5. After clicking, the group announcement prompt will disappear from the WeChat group chat, and all group members will not see the announcement.