Chongqing has a significant history and culture. The city was named Chongqing in 1189 under the Nan Song dynasty. Chongqing city was under the administration of Sichuan province from 1954, but in 1997 it was separated from the province and designated a provincial-level municipality under the direct administration of the central government, the fourth one to be established. At that time the entire eastern portion of Sichuan was incorporated into the municipality, which greatly expanded Chongqing’s overall land area and population.

Chongqing is a  sprawling municipality at the confluence of the Yangtze and Jialing rivers in southwestern China. The municipality of Chongqing, which is around the size of Austria, includes the city of Chongqing and various non-connected cities. As the Chongqing municipal government directly administers the city of Chongqing, as well as rural counties, and other cities not connected to the city of Chongqing, Chongqing municipality can technically claim to be the largest city proper in the world, even though this is due to a classification technicality and not because it is actually the world's largest urban area. Chongqing was a municipality during the Republic of China administration, serving as its wartime capital during the Second Sino-Japanese War.
 

• In 1954 the city became a sub-provincial city within Sichuan Province under the People's Republic of China. On March 14, 1997, however, the city was merged with the neighbouring districts of Fuling, Wanxian, and Qianjiang and it was separated from Sichuan to form Chongqing Municipality, one of China's four direct-controlled municipalities.
• The climate of Chongqing is considered humid subtropical and it has four distinct seasons. Summers are very hot and humid while winters are short and mild. The average August high temperature for Chongqing is 92.5 F (33.6 C) and the average January low temperature is 43 F (6 C). Most of the city's precipitation falls during the summer and since it is located in the Sichuan Basin along the Yangtze River cloudy or foggy conditions are not uncommon. The city is nicknamed the "Fog Capital" of China.
• Part of Chongqing's early development as an economic centre of China is due to its geographic location on large rivers. The city is intersected by the Jialing River as well as the Yangtze River. This location allowed the city to develop into easily accessible manufacturing and trading centre.

Chongqing is the largest of the four direct-controlled municipalities of the People's Republic of China. The municipality is divided into 38 subdivisions, consisting of 26 districts, 8 counties, and 4 autonomous counties. The boundaries of Chongqing municipality reach much farther into the city's hinterland than the boundaries of the other three provincial-level municipalities, and much of its administrative area, which spans over 80,000 square kilometres, is rural. Administratively, the city is divided into a number of districts, counties, and autonomous counties.

Grassroots administrative units are organized as villages in rural areas and as neighbourhood street committees in urban districts. Neighbourhood street committees perform the auxiliary functions of mediating disputes, propagating legal orders, and promoting sanitation and welfare. These committees are quasi-official administrations, covering blocks of streets of varying sizes. Chongqing municipality has considerably extended the territorial limits of the municipal area to include a series of urban-rural units surrounding the city proper.

Since 1980 the municipal government has allowed farmers to engage in industry, commerce, and transportation in addition to cultivation.
 

Chongqing was separated from Sichuan province and made into a municipality in its own right on 14 March 1997 in order to accelerate its development and subsequently China's relatively poorer western areas. An important industrial area in western China, Chongqing is also rapidly urbanising. For instance, statistics suggest that new construction added approximately 137,000 square metres daily of usable floor space to satisfy demands for residential, commercial and factory space. In addition, more than 1,300 people moved into the city daily, adding almost 100 million yuan to the local economy.

Important manufacturers include Chongqing Iron and Steel Company and South West Aluminium which is Asia's largest aluminium plant. Agriculture remains significant. Rice and fruits, especially oranges, are the area's main produce. Natural resources are also abundant with large deposits of coal, natural gas, and more than 40 kinds of minerals such as strontium and manganese. Coal reserves ? 4.8 billion tonnes. Recently, there has been a drive to move up the value chain by shifting towards high technology and knowledge-intensive industries resulting in new development zones such as the Chongqing New North Zone. Chongqing's local government is hoping through the promotion of favourable economic policies for the electronics and information technology sectors, that it can create a 400 billion RMB high technology manufacturing hub which will surpass its car industry and account for 25% of its exports.

The city has also invested heavily in infrastructure to attract investment. The network of roads and railways connecting Chongqing to the rest of China has been expanded and upgraded reducing logistical costs.

The city includes a number of economic and technological development zones:

Chongqing Chemical Industrial Park
Chongqing Economic & Technological Development Zone
Chongqing Hi-Tech Industry Development Zone
Chongqing New North Zone (CNNZ)
Chongqing Export Processing Zone
Jianqiao Industrial Park (located in Dadukou District)
Liangjiang New Area
Liangjiang Cloud Computing Center (the largest of its kind in China)
Chongqing itself is part of the West Triangle Economic Zone, along with Chengdu and Xi'an.

Chongqing has one of the largest economies among Chinese cities. The city is a major manufacturing and transportation hub, with a GDP of over CNY 2.36 trillion in 2019, which is about 2.3 percent of China's total GDP. The city's economy is larger than that of several countries. The Port of Chongqing, located on the Yangtze River, is one of the busiest inland ports in the world, handling millions of tons of cargo every year.

Chongqing has become one of the 10 first-level nodes in the national communication network architecture, which have greatly enhanced Chongqing’s position as an internet hub in the West and the supporting capacity of Chongqing’s network infrastructure.

Chongqing has also become one of the two big cities in the Western Region where three operators have launched 5G pilot projects together. Thus far, Chongqing Mobile has opened two 5G base stations. Within this year, it plans to build and open 50 5G base stations in the main urban area.

During the opening, the newest technologies, products and applications in the fields of artificial intelligence, big data, self-driving vehicles, drone and virtual technology, and so on, were presented and released. The exhibitors included several technology heavyweights such as Alibaba, Google, Inspire, Qualcomm, Huawei and Baidu.

Among the 843 companies from 28 countries and regions, JANZZ.technology was honoured to take part in the SCE in Chongqing. We believe that China will be the leading country in smart technology in the future and we hope to seek potential Chinese partners that can help us open the door to the Chinese market. We could still recall the hundreds of youngsters we met during the expo. Through their excited eyes, we see the bright future of the city.