Tianjin was created by sedimentation of several rivers entering the sea at Bohai Bay, including also the Yellow River, which entered the sea in this area at one point.
The opening of the Grand Canal of China in the Sui Dynasty prompted the development of the city of Tianjin into a trading center. Tianjin until 1404 was known as Zhigu or Straight Port.
During that year, the Emperor Yongle renamed the town "Tiajin", literally "Heaven Ford", o mean that the emperor (son of heaven) forded the river at that point.
For those years also a fort was established at Tianjin, called "Tianjin Wei", meaning "Fort Tianjin".
Tianjin was promoted to a prefecture during 1725 and Tianjin County was established under the prefecture during 1731.
During 1856 chinese soldiers boarded the Arrow, a Chinese-owned ship registered in Hong Kong flying the British flag and suspected of smuggling, piracy and of being engaged in the opium trade.
• Between 1895 & 1900 Britain and France were joined by the empires of Russia, Japan and Germany, & even by countries without other Chinese concessions such as Austria-Hungary, Belgium and Italy.
• In June 1870, Wanghailou Church in Tajin, was built by french missionaries one year earlier, was impicated in the kidnapping, death by neglect, and improper burial of Chinese children.
• In June 1900, the Boxers were able to seize control of much of Tianjin city and the June 26 of 1900 belligerent European forces heading towards Beijing were stopped by Boxers at nearby Langfang, and were defeated and forced to turn back to Tianjin.
• In July of 1900, the 8 Nation United Army attacked & occupied Tianjin. They soon established the Tianjin Provisional Government, comprised of representatives from each of the occupying forces (German, Russian, Italian, French, Japanese, British, American and Austro-Hungarian).
• On July 30, 1937, the city of Tianjin fell to Japan, as part of the Second Sino-Japanese War, however not entirely occupied, respecting non-foe foreign concessions. During the occupation Tianjin was ruled by the North China Executive Committee, a puppet state based in Beijing.
• After 1945, the city of Tianjin became base to American forces.
• In January 15, 1945 Communist forces took Taijin, following a 29-hour long battle.
Nowadays, Taijin is lagging behind other important cities like Beijing, Shanghai, and Guangzhou.