[Zhengzhou fully implements "one room, one code" for existing housing to solve problems such as false listings and repeated listings] According to the Zhengzhou Municipal Housing Security and Real Estate Administration, Zhengzhou will fully implement the "one room, one code" verification and management system for existing housing in October in response to prominent problems such as false listings, repeated listings, unclear property rights, and false diversion in the existing housing market. Zhengzhou will rely on government big data to verify the ownership of all existing housing released to the outside world and generate a unique official housing code. Citizens can scan the QR code through WeChat and "Zheng Haoban" to directly inquire about house ownership, mortgage, seizure and other information, realizing full traceability of housing information and solving the problem of asymmetric information on buying and selling.