Open WeChat first, then click Discover in the lower right corner, then click on the circle of friends, and long press the photo symbol in the upper right corner. Click Edit, and then click Publish.

If you just want to send some words in the circle of friends and don't want to send some pictures and videos, then you can click on WeChat, click on me and then click on the circle of friends. Then there is a small camera in the upper right corner. Don't click on it, just send videos or photos. Just click and there will be a place for you to enter. You can enter what you want to send, and then press Launch.