Tianjin rose by water transportation since ancient times, and became a land and water terminal for transporting grain from the south to the north after the mid-Tang Dynasty. The rulers set up "Zhigu Village" in Zhigu; Haijin Town, founded in Yuan Dynasty, is a military center and a water transportation center.
In the second year of Yongle in the Ming Dynasty (1404), the city was officially built, which is the only city in ancient China with an exact record of the time when it was built. After Judy proclaimed herself emperor, in order to commemorate the "Battle of Jingnan", Yu Yongle renamed this place Tianjinwei on November 21, 2002, which means the ferry that the son of heaven passed by.
As a military location, Tianjin began to build a city and set up a garrison in the area of Little zhi gu in the southwest of Sanchakou, which opened a new page in Tianjin's urban development. Later, Tianjin left-back and Tianjin right-back were added.
Therefore, it can be seen that Tianjin was officially built in the Ming Dynasty, and Tianjin was established in the Ming Dynasty.
Extended data:
The history of Tianjin:
Tianjin was originally located in the ocean. More than 4000 years ago, under the action of the Yellow River sediment, it slowly surfaced to the bottom of the sea, forming an alluvial plain. The Yellow River changed its course three times in ancient times and entered the sea near Tianjin, near Ninghe District 3000 years ago, near Huanghua County in the Western Han Dynasty and in the southern suburbs of Tianjin in the Northern Song Dynasty. During the Jin Dynasty, the Yellow River moved south, captured the Huaihe River and entered the sea, and the coastline of Tianjin was fixed.
Tianjin was inhabited by human beings in the Shang and Zhou Dynasties, but it was only later that it became a city. The opening of the Grand Canal in Sui Dynasty made Tianjin, which is located in the north of the canal and has convenient transportation between rivers and seas, increasingly important. The canal and the "Five Rivers at the Tail" (now Haihe River) meet at the Sanchahekou in the urban area, and Tianjin is famous as the "three major seaports" in history. After the mid-Tang Dynasty, Tianjin became a land and water terminal for transporting grain from south to north.
Baidu Encyclopedia-Tianjin