Introduction to architectural style: Each building is a 5- or 8-story structure, with a total of more than 500 buildings and about 7,000 people living there. Most of the rooms on the first and second floors of high-rise buildings have no windows (livestock are kept on the first floor and warehouses are on the second floor), and the third floor and above are for human habitation. The roof and attic are coated with alabaster.