I want to ask why I haven't been out of the house before, why the health code shows green and yellow, and then the imperial code is displayed.

The Office of the Epidemic Prevention and Control Headquarters in COVID-19, Henan Province recently issued a notice that from 0: 00 on March 22, 2022, Henan will implement health management measures such as coding when entering Henan and detecting nucleic acids twice every three days. After the implementation of the notice, many citizens reported that they had not left Zheng recently and became yellow code.

Coding reason: confirmed cases and asymptomatic infected persons and their close contacts, sub-close contacts, time and space companions, people from other places coming to Henan, people staying in medium and high-risk areas and special areas, and people actually passing through medium and high-risk areas or local cities can all be coded. It should be noted that although some small partners have not yet gone out of the market and have not yet reached the middle and high risk area, if other mobile phone numbers are used by others and the mobile phone is connected to the base station in the risk area, they will also give a yellow code through communication big data. This is also the reason why many people "sit at home and the yellow code falls from the sky". For transcoding methods, such as specifying the code city/county as the permanent residence, and completing health management such as nucleic acid detection and medical observation, after meeting the transcoding conditions, you can open Alipay → Henan Health Code → health code transcoding registration → red/yellow code transcoding application, fill in and submit supporting materials as required, and the system will transcode after receiving the application. Or contact the local community (village) to apply for offline transcoding, and report it to the county-level epidemic prevention and control headquarters for transcoding step by step after community review. If the city where the code is assigned is not a permanent residence, you need to apply for transcoding online. Steps: Open Alipay → Henan Health Code → health code transcoding registration → red/yellow code transcoding application, fill in and submit proof materials as required, and the system will transfer the application to the place where the code is allocated, and transcode it after meeting the requirements. It should be reminded that if there are two or more coding cities, all coding cities need to be decoded before transcoding.