I don't know how to sign up two days in advance for a trip to Mudanjiang.
1. First search Mudanjiang Health on WeChat official account or directly scan the QR code of WeChat official account, and click to follow WeChat official account.
2. Secondly, enter the official account of WeChat, select the entry bar at the bottom and enter the entry page.
3. Finally, fill in the personal data and itinerary information according to the page prompts, and then click Submit.