1, micro letter small program search Changtong code.
2, enter the small program, click on the home page of the small program to apply for (on behalf of) the personal code
3, read the application instructions and click on the blue square below to continue to fill in the information.
4. For the first time, you need to log in and register, log in with your real name and face, fill in your personal information, and click the bottom of the page to apply for the Changtong code.
5. After filling in your personal information successfully, go back to the homepage of the app and click on Health Code to view and use your personal Changtong Code (Nanchang Gantong Code). Health dynamic code according to the personal situation of different colors, have a green code to pass without worry.