The development trend of cities in the future is to solve the problems and needs of residents based on people. In the accelerated period of urbanization, the main task of urban construction is to install more people. With the urbanization rate from 36.2% in 2000 to more than 60% in 2020, the era of urban development has come. What people are mapped out in the "system" of the city is only a combination of numbers, but it is not three-dimensional and does not have a complete personality. This kind of discontinuity and incompleteness is also an opportunity for the future. In the future, cities will inevitably move towards "new urbanization centered on people", and the development logic of cities will return to meeting people's needs and serving the connection between people.
        In the era of Internet of Things, sensor products have become an important hardware infrastructure requirement in the era of Internet of Things. Sensor technology, together with computer technology and communication technology, is called the three pillars of information technology. The application innovation in the fields of the Internet of Things, such as consumer electronics, automotive electronics, industrial Internet, health care, and so on, puts forward higher requirements for sensors. As an important part of the sensor field, flexible sensors are also changing the modern production mode.
        Based on this judgment, on the one hand, flexible sensors should focus on the needs of future cities and do well in the core technology of their own sensors. Use flexible micro-nano sensors with real high performance and high reliability to solve the problem. On the other hand, sensors join in the construction of future cities to realize mutual drive, and dynamically perceive the urban operation status anytime and anywhere in combination with actual application scenarios.