Yangzhou real estate information only connects the urban area for the time being. If this information system is established in the future, plus some information of banking system, financial system and tax system, plus some information systems of public security, if it can be unified on one platform, there is no need to take administrative measures to restrict purchases. Yesterday, Jiang Weixin, Minister of Housing and Urban-Rural Development, revealed that China is working hard to build an urban personal housing information system. By the end of the year, information systems in 40 key cities will be networked, and then nationwide networking will be realized as soon as possible.