Shenzhen's health code is called Yuekang code accurately. Relying on the national integrated government service platform, it enjoys mutual trust with the epidemic prevention and health information related to the national epidemic prevention and health information code and the health pass code of all provinces (autonomous regions and municipalities). Yuekang code has realized mutual recognition of information in the whole country and the whole province. When people from other provinces enter Guangdong, they should apply for the national integrated platform epidemic prevention and health information code or Guangdong health code in advance to realize one-code communication.