Huadou code is a static two-dimensional code bound by individuals, which is connected to Kunshan Big Data Center to update students' Su Kang code information, travel information and nucleic acid detection information in real time.

For school students who don't have smart phones and special groups (elderly people, children, etc.) who can't produce "Su Kang code", Kunshan Epidemic Prevention and Control Headquarters has developed a special two-dimensional code "Huadou code".

in order to further strengthen the terminal management of school epidemic prevention and control, and ensure the health and safety of teachers and students, after the off-line resumption of school, all students entering the school must do a good job of scanning the code of "health code" or "flower bean code" and measuring the temperature, so as to ensure that every time they enter, they must be scanned and tested, and no one will be missed. For students, the use of Huadou code can not only effectively build a campus epidemic prevention barrier, but also greatly improve the efficiency of code scanning.