Static code refers to static two-dimensional code, which is a kind of two-dimensional code. A common payment QR code posted by merchants on paper is static code, which only needs to be generated once when printing. It is a static payment code, hence the name static code. Open WeChat, search for the applet "Health Officer Micro-Wuhan" → authorize access → service → add a health card → input cardholder information (children) → open the newly applied electronic health card → download the electronic health card → view the electronic health card in the photo album, that is, the static code of the health code.