In the future world, transportation will be more convenient, and maglev trains will replace traditional transportation tools to send people to sky cities. In the city, bionic robots will become a part of people's daily life, providing people with various services. On the sea, giant wind turbines will become the main energy source of the city, providing clean energy for the city. At night, the city will be illuminated by lights, as if the Milky Way has fallen into the world