1. Open the WeChat homepage first, and then click Me at the bottom of the page.
2. After opening the page, click Favorites.
3. After opening the page, click the+sign in the upper right corner.
4. After opening the page, click Add Health Code Photo.
5. In the pop-up page, select two health code photos to be synthesized.
6. After selecting a photo, click the "…" symbol in the upper right corner.
7. Select Save As Picture in the pop-up page, and the photo will be combined.
8. Open the mobile phone photo album and you can see the composite photos.