What are the parts of the Umbrella Space City?

The Umbrella Space City is like a big open umbrella, but without an umbrella cover. The agricultural cabins are connected into a ring and form the edge of the umbrella. The umbrella handle is a huge cylinder with a diameter of 6,500 meters and a length of 32,000 meters, which can accommodate 1 million people. The cylinder rotates at a rate of one revolution every two minutes to create artificial gravity. Four glass windows are set up symmetrically around the cylinder. Outside the window is a cover and the inside of the cover is a mirror. When the cover is closed, the sunlight is blocked, and there is night inside; when the cover is opened, the mirror reflects the sunlight into the cylinder, and there is daytime inside. The interior of the cylinder is the same as the scenery on the earth, with mountains, rivers, trees, flowers and plants; it can also control wind and rain and "create" weather. The agricultural cabin is a sealed cabin that can control seasonal changes inside, allowing vegetables and fruits to be grown at any time. The agricultural cabin also houses a variety of animals, including various insects that are beneficial to the plants. The solar power station, space factory, and space terminal are all located at one end of the cylinder, where residents of the space city go to work.