How long will Gansu health code be empty?

It has returned to normal on September 9, 2022. Null Chinese means invalid, zero value, equal to zero. The "empty cause of epidemic false abnormality" in health indicates that there is something wrong with the current health code, which may be a network problem. According to the Gansu Provincial Health and Wellness Committee, the Gansu health code system returned to normal on September 9, 2022 after emergency repair by the technical department.