Which prefecture-level city in Sichuan is known as the southern city of lights

Zigong.

Zigong City is located in the south of Sichuan Province, is the regional center of southern Sichuan, the southern center of the Chengdu-Chongqing Economic Circle, enjoying the "millennium salt capital", "hometown of dinosaurs", "South China City of Lights Zigong is also known as the "City of Gastronomy" and "Thousand-Year Salt Capital". Zigong was established in 1990 as the Huidong New District (Zigong High-tech Industrial Development Zone), which is one of the five existing state-level high-tech zones in Sichuan Province. Zigong is also one of the five major cities in Sichuan province with a main urban area of more than 100 square kilometers and a population of more than one million.

Zigong, Sichuan, is known as the "Pearl on the Ancient Salt Road". It has a history of over 1,000 years of salt mining, and is the only traditional well salt workshop in Zigong that has been preserved to this day. The centuries-old process of boiling salt in natural gas from the well continues to this day, and the Stanley Well, which was excavated in the third year of the Daoguang period in the Qing Dynasty, is the world's first large salt well of more than 1,000 meters.

Topography and geomorphology

Zigong City, the geotectonic system of Yangzi Huai Di Sichuan Taiwan Pass, Sichuan Central Taiwan Arch, Zigong Depression. North and Weiyuan - Longniusi platform dome adjacent to the southeast of the Chishui Depression, south and Luzhou Bulge, southwest and Liangshan fold fault zone adjacent. The territory is tectonically simple and the rock layers are gently produced. The southeastern part of the folds are close and narrow; the northwestern part of the tectonic structure is relatively broad and slow. The terrain is high in the northwest and low in the southeast.

Northwest is the city's low mountains concentrated distribution area, the mountain range is generally 500 meters to 800 meters above sea level. The highest point in Rongxian Dingjiashan main peak, elevation 901 meters. Southeast elevation is generally in 300 meters ~ 400 meters, mostly 300 meters (± 50 meters), the lowest point in the Tuojiang River out of the Fushun territory at the water surface, 241 meters above sea level.

Maximum relative height difference of 661 meters, the general terrain relative height difference of less than 50 meters. Geomorphology type of low hills, by the low mountain landform, hilly landform, flat dam landform and gully landform composition. The low mountains are in the form of strips, distributed in the northwest and southeast, with a wide distribution area, and the gullies and valleys are crisscrossed and interspersed among the hills.

Reference for the above: Baidu Encyclopedia-Zigong City