How many national science cities are there?

I have three major science cities, Zhongguancun Science City, Huairou Science City and Future Science and Technology City. These three science cities were used as a platform for Beijing to build a national science and technology innovation center and were included in the government work report of the 2017 Beijing Two Sessions. . Zhongguancun Science City creates a source of original innovation and a main frontier for independent innovation. Huairou Science City focuses on basic scientific research and builds the world's top scientific facilities. Changping Future Science and Technology City is an innovation base for state-owned enterprises and a gathering place for first-class scientific research talents.