Tangshan City, referred to as "Tang", Hebei Province, prefecture-level city, located in the eastern part of Hebei Province, the northeast of the North China Plain, south of the Bohai Sea, north of Yanshan, adjacent to Beijing and Tianjin, is located in North China and Northeast China passes through the throat of the key, between the longitude of 117 ° 31 ′ - 119 ° 19 ′, 38 ° 55 ′ - 40 ° 28 ′ latitude, total area of 13,472 square kilometers. 13,472 square kilometers. As of October 2022, Tangshan City has seven municipal districts, three county-level cities, and four counties under its jurisdiction. As of the end of 2023, Tangshan had a resident population of 7,719,500 people. Tangshan is named after Tang Emperor Li Shimin's eastern expedition to Goguryeo, known as the "Porcelain Capital of the North", is a provincial sub-center city, a third-tier city, a type-II large city, one of the central cities of Hebei Province approved by the State Council, a new industrialization base and port city in the Bohai Sea region, and a comprehensive cross-border e-commerce pilot zone in China (Tangshan), China (Hebei) Pilot Free Trade Zone. National Agricultural Products Quality Safety City. It is the birthplace of China's first mechanized coal mine, the first standard-gauge railroad, the first steam locomotive, and the first barrel of machine-made cement. Tangshan is the birthplace of Chinese opera, known as the "Jidong three flowers" shadow, opera, Leiting drums, for the national intangible cultural heritage. In 2023, Tangshan City completed a GDP of 913.33 billion yuan, calculated at constant prices, an increase of 5.9% over the previous year, with a growth rate of 0.7 and 0.4 percentage points higher than that of the whole country and the province respectively. In terms of industries, the added value of primary industry was 65.52 billion yuan, an increase of 4.1%; the added value of secondary industry was 466.06 billion yuan, an increase of 6.3%; the added value of tertiary industry was 381.80 billion yuan, an increase of 5.7%. The structure of the three industries was 7.2:51.0:41.8, and the contribution of the three industries to economic growth was 5.7%, 55.7% and 38.6% respectively.