How to change the avatar in the middle of WeChat QR code?

Log in to WeChat, click to find your own QR code and see the small picture in the QR code. 2. In the personal information, click on the avatar to change the WeChat avatar. To change the thumbnail in the WeChat QR code, you must first change the avatar in WeChat. 3. After selecting the picture to be replaced, click Use, and the WeChat avatar will be replaced. 4. Back to the personal information management settings interface, you can see that the avatar has been replaced with the picture you just selected. Then click "QR code business card" to enter the QR code business card setting interface.