The related functions, such as boarding code, boarding card and spreading code, can be displayed directly on the right side of the green code interface, which is very convenient to switch directly with one button. Take the code display function as an example. After entering the agent's name, mobile phone number, certificate type, certificate number, personal relationship, residential address and other information in advance, a small icon of "Code Exhibition" will be generated on the right side of the green code of health code. Click it to display the agent's health code.