Methods: 1. Delete the health code in WeChat: Open WeChat, click on My Card Package-Electronic Health Code of National Health and Wellness Committee-"…" is in the upper right corner-and click Delete. 2. Delete the health code in Alipay: Open Alipay App, click My-Settings-Privacy-Authorization Management, find the health code, enter the health code details page, and click "Cancel Authorization" at the bottom.