Tangshan () is a coastal, industrial prefecture-level city in the northeast of Hebei province. It is located in the eastern part of Hebei Province and the northeastern part of the North China Plain. It is located in the central area of the Bohai Rim and serves as the main traffic corridor to the Northeast. The city faces the Bohai Sea in the south, the Yan Mountains in the north, Qinhuangdao across the Luan River to the east, and Tianjin to the west.
Much of the city's development is thanks to the industrialization, beginning in 1870, when Kailuan Group established coal mines in the region. It's the birthplace of China's first standard-gauge railway, the first railway plant, the first steam locomotive, and the first cement factory. It was hailed as China's "cradle of industrialization". Even today, Tangshan is a hub of steel, energy, chemical, and ceramics production. Ping opera, which originated from the city's Luanzhou county, is one of the five most popular Chinese operas.
The city has also become known for the 1976 Tangshan earthquake which measured 7.8 on the Richter scale, flattened much of the city, and killed at least 255,000 residents according to official estimates. The city has since been rebuilt, has become a tourist attraction, and is among the 10 largest ports in China.
The city of Tangshan is approximately east by south east of Beijing. It takes roughly 2 hours by road to get from Tangshan to Beijing and 1 hour by road to reach Tianjin. Tangshan's prefecture population was 7,717,983 at the 2020 census, with 3,687,607 in the built-up (or metro) area made of the 7 urban core districts.
Tangshan is named after Dacheng Hill (大城山), which was called Mount Tang (唐山), in the middle of the city.
In A.D. 645, Li Shimin, an emperor of Tang dynasty and his army were stationed at Dacheng Hill on his way back from the Korean Peninsula. Unfortunately, Caofei, his beloved concubine, died there. In order to commemorate her, he named the mountain with the name of the empire — Tang. Later, the city took the name of the mountain.