At the end of March 2019, China’s first fifth generation (5G) call was placed in Shanghai. As of today, China has more than 50 million 5G subscribers. Shanghai alone plans to build 30,000 5G base stations to achieve full coverage of 5G networks in industrial manufacturing, intelligent connected cars, health care, and urban management. The 5G is not only a new generation of mobile communication technology, but also an infrastructure for economic and social development.