Promoted by the global "smart wave" and related policies, many parts of China have proposed the slogan of "smart city", and will build "smart city" as a way to cultivate competitiveness, respond to the financial crisis, expand employment of citizens, and seize the high ground of future technology. However, it should be seen that the current "smart city" practice is mostly in the concept construction period, and people's understanding of "smart city" is not limited to the smart city or digital city levels such as the Internet of Things, the Internet, and cloud computing. The emergence of "smart cities" in major media also makes it difficult to distinguish which are urban marketing methods and which are the actual conditions of urban construction. What does this text mean? ['Building a "smart city" is an important strategy for future urban development.', 'There is still a long way to go to build a "smart city".', 'The current definition of the concept of "smart city" is not clear.', 'The "smart city" in the media is likely to be just a means of urban marketing.']