1758 (twenty-three years of Qianlong), in order to meet the needs of population growth, reclamation and commercial trade, the Qing army built a tucheng outside the south gate today, "five minutes a week, one foot and two feet high", which is the embryonic form of Urumqi city. ?
1763 (twenty-eight years of Qianlong), the old Tucheng extended northward, reaching a circumference of five miles and four minutes. After completion, Emperor Qianlong named the expanded city Dihua.
1772 (thirty-seven years of Qianlong), a new city-Gongning City (the old city) was built in the west of Dihua City, and officers and men were stationed in the camp.
Extended data
The northernmost part of Urumqi is located in the lower reaches of Toutun River, 3.5 kilometers away from Wujiaqu urban area, and the southernmost part reaches Xiagezhe Ridge south of Aragou, with the widest point from north to south 153 kilometers. The easternmost part of the city is in Aikengou, Shiyao, east of Gaoyazi Ranch, and the westernmost part is in Tiangeling, west of Shengli Daban. The longest is about 190 km. 580 -920 meters above sea level. The natural slope is 12‰- 15‰.
Urumqi has a vast terrain and vast mountains. It is high in the south and northeast, and low in the middle and north. The highest point is the top of Bogda Peak in Tianshan Mountain, with an altitude of 5445 meters; The lowest is on the south side of the Grand Canal in Jin Meng Reservoir, with an altitude of 490.6 meters. The horizontal distance between the two places is 75 kilometers, and the height difference is 4954.4 meters. The mountainous area accounts for more than 50% of the total area, and the alluvial plain in the north is less than110 of the total area. The average elevation of the urban area is 800 meters.
Urumqi is surrounded by mountains on three sides and the northern plain is open. There are Boda Mountain, Carata Geshan and Dongshan Mountain in the east; There are Keraza Mountain and Xishan Mountain in the west; There are Jiashan East Section, Yilian Khabir (Tiangeer Mountain) and Tugedabantag in the south. The terrain of the jurisdiction decreases from southeast to northwest, which is roughly divided into three steps: the first step is mountainous, with an altitude of 2500-3000 meters or higher; The second level is intermountain basins and hills, with an altitude of1000-2000m; The third level is the plain, below 600 meters above sea level.