The first floor is higher than others' third floor. How did the special architectural community in Chongqing form?

Chongqing, also known as Mountain City, is a provincial administrative region, municipality directly under the Central Government, national central city and megacity in People's Republic of China (PRC), one of the important national central cities approved by the State Council, the economic center in the upper reaches of the Yangtze River, an important modern manufacturing base in the country and a comprehensive transportation hub in southwest China. Picturesque, it is the Belt and Road in the southwest of China. Chongqing is located in the southwest of China. It is the logistics center of economy, finance, science and technology, shipping and commerce in the upper reaches of the Yangtze River. The national logistics hub is an important strategic fulcrum of the western development, an important node of the economic belt along the Yangtze River and the inland open highland, and a beautiful mountainous area. It is famous for its river city, fog city, bridge city and mountain city. Chongqing is dominated by the Han nationality, and the minority nationalities are mainly Tujia and Miao. The Three Gorges of the Yangtze River, Dazu Stone Carvings, Wulong Karst and Jinfo Mountain are rich in tourism resources.

There are Daba Mountain in the north, Wushan Mountain in the east, Wuling Mountain in the southeast and Dalou Mountain in the south of Chongqing. The elevation of the main urban area of Chongqing is between 168m-400m. The highest peak in the city is Yintiaoling, the main peak of Liang Jie at the eastern edge of Wuxi County, with an altitude of 2796.8 meters. The lowest point is the Yangtze River in Wushan County, with an altitude of 73. 1 meter. The height difference in Chongqing is 2723.7 meters, and the terrain gradually narrows from north to south towards the Yangtze River basin. The northwest and central parts of Chongqing are dominated by hills and low mountains. There are two mountains in the southeast, Daba Mountain and Wuling Mountain. The overall terrain is high in the southeast and northeast, low in the central and western regions, and gradually decreases from north to south to the Yangtze River basin.

Under the dual influence of topography and climate, Chongqing is foggy and is known as the foggy capital of Chongqing. The annual average foggy days are 104 days. London, known as the foggy capital of the world, has an average annual foggy day of only 94 days, while Tokyo, known as the foggy capital of the Far East, has an average annual foggy day of only 55 days. Wuyun in Bishan District has 204 foggy days all year round, which is the highest in the world. Chongqing is the largest economic center in the southwest of China and the upper reaches of the Yangtze River.

Chongqing is one of the old industrial bases in China and an important modern manufacturing base in China. It has formed the largest electronic information industry cluster in the world and the largest automobile industry cluster in China. It has formed hundreds of billions of industrial clusters such as equipment manufacturing, comprehensive chemicals, materials, energy and consumer goods manufacturing. It is also the world's largest notebook computer production base and the second largest mobile phone production base.