International Conference on Environmental Pollution and Health

Tianjin, formerly known in English as Tientsin，which mean “Ford of Heaven”，is a metropolis in northern coastal Mainland China and one of the four national central cities of the country，with a total population of 15,620,000，and is also the world’s 6^th-most populations city proper. It is governed as one of the four direct-controlled municipalities of the PRC and is thus under direct administration of the central government. Tianjin borders Hebei Province and Beijing Municipality, bounded to the east by the Bohai Gulf portion of the Yellow Sea. As a important part of the Bohai Economic Rim, it is the largest coastal city in northern China.

In terms of urban population, Tianjin is the fourth largest in China，after Shanghai, Beijing，and Guangzhou. In terms of administrative area population，Tianjin ranks fifth in Mainland China. The walled city of Tianjin was built in 1404. As a treaty port since 1860，Tianjin has been a major seaport and gateway to Beijing. Under the Qing Dynasty and the Republic of China, Tianjin became one of the largest cities in the region. At that time, numerous European-style buildings and mansions were constructed in concessions, many of which are well-preserved today. Nowadays Tianjin is a dual-core city, with its main urban area (including the old city)located along the Hai River, which connects to the Yellow and Yangtze Rivers via the Grand Canal and Binhai, a New Area urban core located east of the old city, on the coast of Bohai Sea. Tianjin is a new growth pole in China and is a hub of advanced industry and financial activity.

The city has many sights worth visiting，its streetscapes-an assemblage of historic nineteenth-and early twentieth-century European architecture，juxtaposed with the concrete and glass monoliths of contemporary China-are its most engrossing attraction. Though wide swaths of the city are being redeveloped，much of the colonial architecture has been placed under protection.

The four delicacies of Tianjin include Goubuli baozi, Guifaxiang Shibajie Mahua,Erfuoyan Zhagao and Maobuwen Jiaozi. These famous snakes are available in Nanshi Food Street, which was a famous calling-card of Tianjin in the aspect of cuisine.