Tianjin, abbreviated as "Jin" and also known as "Jingu" or "Jinmen", is a provincial-level region of the People's Republic of China, a municipality directly under the central government, a national central city, and one of the first coastal open cities. It serves as an advanced manufacturing and R&D base, a core international shipping area in northern China, a demonstration zone for financial innovation and operation, and a pilot zone for reform and opening-up. Tianjin has 16 districts under its jurisdiction, covering a total area of 11,966.45 square kilometers. As of the end of 2023, the city has a permanent population of 13.64 million, with an urbanization rate of 85.49%.

Tianjin is located on the west coast of the Pacific Ocean, in the northeastern part of the North China Plain, at the lower reaches of the Haihe River basin. It borders the Bohai Sea to the east, the Yanshan Mountains to the north, and the capital city of Beijing to the west. It is situated at the confluence and estuary of five major tributaries of the Haihe River: the Southern Canal, Ziya River, Daqing River, Yongding River, and Northern Canal, earning it the nicknames "Nine Rivers' Terminus" and "Key Waterway Hub". Tianjin is a major node in the China-Mongolia-Russia Economic Corridor, a strategic pivot of the Maritime Silk Road, a land-sea intersection in the construction of the Belt and Road Initiative, and the nearest eastern starting point of the Eurasian Land Bridge. With its superior geographical location and transportation infrastructure, it has become a critical hub connecting domestic and international markets, bridging the North and South, and facilitating communication between the East and West. Additionally, it is a vital seaport for neighboring inland countries. Tianjin is backed by the vast economic hinterlands of North China, Northwest China, and Northeast China, making it a significant passage for external exchanges for over a dozen provinces, autonomous regions, and municipalities in northern China. It is also the largest port city in northern China. Tianjin, 120 kilometers away from Beijing, plays a strategically essential role in protecting the capital.

In 2023, Tianjin achieved a regional GDP of RMB 1,673.73 billion, marking a growth of 4.3% compared to the previous year. Throughout the year, the total added value of the city's 12 key industrial chains accounted for 79.8% of the added value of industries above designated size, reflecting a 1.9 percentage point increase over the previous year. Specifically, the added values of the integrated circuits, vehicle networking, aerospace, traditional Chinese medicine, and high-end equipment sectors all achieved double-digit growth, rising by 32.7%, 19.2%, 17.8%, 14.6%, and 13.5%, respectively.