What does 1 mean in the top-level design of medical and health informatization in the 12th Five-Year Plan?

In his speech, Meng Qun, director of the Statistical Information Center of the National Health and Family Planning Commission, introduced the top-level design scheme of national health and family planning resources integration-"4631-2 Project", in which "4" stands for four-level health information platforms, namely: national population health management platform, provincial population health information platform, prefecture-level population health regional information platform and district-level population health regional information platform; "6" stands for six business applications, namely: public health, medical service, medical security, drug management, family planning and comprehensive management; "3" stands for three basic databases, namely, electronic health record database, electronic medical record database and whole population case database; "1" stands for 1 converged network, that is, a unified population health network; The last "2" is the population health information standard system and information security protection system. Relying on public health information system, grass-roots medical and health management information system and medical and health public service system, we will build an all-round and three-dimensional national health and family planning resource system.