Please tell me how big the area of ??Jiayuguan is. 3Q

The built-up area of ??Jiayuguan is 35 square kilometers, and the current planned urban area has been expanded from the original 60 square kilometers to 80 square kilometers. Introduction to Jiayuguan City Jiayuguan City is located in the northwest of Gansu Province, in the middle of the Hexi Corridor. It borders Jiuquan City, an important town in Hexi Province, to the east, and is 776 kilometers away from the provincial capital Lanzhou. It is connected to the oil city Yumen City to the west and 650 kilometers to Hami, Xinjiang. To the south is the Qilian Mountains and Suzhou Mountains, which are covered with snow all year round. It borders the Yugur Autonomous County in the south and is more than 300 kilometers away from Qinghai; the black mountain in the north is pillowed like cast copper and is connected to Jiuquan Jinta County, Jiuquan Satellite Launch Base and Ejina Banner in Inner Mongolia. The central part is the western edge of Jiuquan Oasis. It is the only prefecture-level unit in Gansu Province that does not have districts or counties or cities under its jurisdiction. The administrative division is Jiayuguan City, which has 6 streets and 3 towns: the city's altitude is between 1412-2722 meters, oases are distributed between 1450-1700 meters above sea level, and the city center is 1462 meters above sea level. The terrain within the territory is flat and the land types are diverse. The central and western parts of the city are mostly Gobi, where urban areas and industrial enterprises are located; the southeast and northeast are oases, which are agricultural areas. The oases are divided into points, blocks, strips, and strips according to the landforms, accounting for 1.9% of the total land area. Jiayuguan is located at the transportation hub of the ancient "Silk Road" and the western end of the Great Wall of the Ming Dynasty. Here, the Silk Road culture and the Great Wall culture are integrated and complement each other. It is known as the "Hexi Important Town" and the "Key to the Border" and has very rich tourism resources. The city's built-up area is 35 square kilometers, and the urban planning area has been expanded from the original 60 square kilometers to 80 square kilometers. Jiayuguan City has a total population of 180,000, including 160,000 non-agricultural residents. The recent population development scale is determined to be 200,000 people, and the long-term population development scale is determined to be 350,000 people. Jiayuguan is a typical immigrant city, with the vast majority of the city’s population coming from all over the country. Jiayuguan Railway Station is located at the foot of Jiayuguan Pass, the great pass of the Great Wall, at the western end of the ancient Silk Road, relying on the steel city Jiayuguan. The center of the station is located at 762 kilometers and 837.51 meters of the Lanzhou-Xinjiang Line. The station level is a first-class station. Its technical nature is an auxiliary marshalling station and its business nature is a passenger station. Freight terminal. Mainly responsible for the dismantling and marshalling of Lanzhou-Xinjiang Line direct trains, direct trains, and pick-up and pull-off trains, as well as the dismantling and marshalling tasks of Yumen South and greening small trains. Responsible for the pick-up and delivery of Jiuquan Iron and Steel Special Railway, and handling of passengers and luggage of each passenger train. When it arrives, it carries more than 140,000 passengers and more than 120,000 tons of cargo every year, with a maximum daily throughput of 5,500 vehicles. Jiayuguan Station was built in 1956. It was Beidahe Station when the Lanzhou-Xinjiang Line opened to traffic, and was later changed to Xiyuguan Station. In September 1969, it was upgraded from a fourth-class station to a second-class station, and on June 3, 1993, it was upgraded to a first-class station. stand. The current station layout is a one-way, one-level, three-station horizontal layout, with 1 centralized signal building, 1 hump signal building, 167 sets of switches, 4 lighting bridges, 4 lighthouses, 2 shunting areas, and 29 lines. The maximum number of converted passenger cars is 2,320, and the switches are controlled by electrical centralized control. There are 2 freight yards, 2 passenger platforms, and a waiting room with a total construction area of ??3,696 square meters. Jiayuguan is the western end of the Great Wall in the Ming Dynasty. It is the most spectacular and best-preserved ancient military castle built along the Great Wall in the Ming Dynasty. It is an important military fortress along the Great Wall in the Ming Dynasty and all subsequent dynasties. " and "the first pass in Hexi". Jiayuguan is located at the junction of the central and western parts of the Hexi Corridor (west of the central part) and has a history of 631 years. It was built nine years earlier than Shanhaiguan. In the early Ming Dynasty, Duke Guogong of the Song Dynasty and General Feng Sheng, who conquered the captives, chose a site in the middle of the Hexi Corridor on the way to the victory of the army. It is connected to Jiuquan in the east, Yumen in the west, Black Mountain in the back, and the western foothills of the Jiayuan Plateau, the chokepoint of Qilian, in the south. Build a pass. Guancheng was built in the fifth year of Hongwu in the Ming Dynasty (1372 AD), lasted 168 years, and was completed in 1540 AD. As recorded in the historical material "Chronicles of the Border of Qin": "When there is water first, then the gates are built; when there are connections, buildings are built; when there are buildings, the Great Wall is built; after the Great Wall is built, it can be defended." Jiayuguan Pass has a reasonable layout and proper architecture. Guancheng has three layers of walls and multiple lines of defense. There is a city inside the city and a trench outside the city, forming a strong defensive situation. It consists of: inner city, barbican city, Luocheng city, city moat, and three three-story, three-eaves, hilltop-style high platform pavilion buildings, city moat, and Great Wall peak. The inner city is the main body and center of Guancheng, with a circumference of 640 meters and an area of ??25,000 square meters. Outside the east and west gates of the inner city, there are barbicans for protection, each covering an area of ??more than 500 square meters. The gates of the Wengcheng all open to the south. To the west of the West Wengcheng, there is a Luocheng. There is a gate in the middle of the Luocheng city wall to the west. The lintel of the gate is inscribed with the words "Jiayu Pass". The existing buildings in Guancheng mainly include the Guerrilla General's Mansion, Guanjing, Guandi Temple, Stage and Wenchang Pavilion. Jiayuguan Pass City is surrounded by mountains and rivers, guarding a canyon area about 15 kilometers wide from north to south. The Tuolai River Valley in the south of the canyon also constitutes a natural barrier for the pass defense. Beacons and piers and abutments are crisscrossed near Jiayuguan, and there are 66 piers and abutments in the east, west, south, north and northeast of Guancheng. Jiayuguan Pass has a natural terrain and is capable of both offense and defense. It forms a strict military defense system with the nearby Great Wall, city towers, moats, beacons and other facilities. It is also known as "the most powerful pass in the world".

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