The industries included in a smart city have been answered. Let me introduce that there are three fastest application fields in a smart city: smart security, smart transportation and smart community.

on the one hand, smart security can build the underlying infrastructure for smart city construction, on the other hand, it can also provide key technical support for other aspects of smart city construction.

As a new service system, intelligent transportation serves for smooth public travel and sustainable economic development, and is an important part of smart cities.

As a new concept of community management, smart community is committed to realizing intelligent residence and intelligent service, which is an indispensable part of the development of smart cities.

There are not many enterprises in China that have the overall integration implementation capability of complex disciplines, such as Huawei, China Tower, China Communication Service, etc.