Tianjin,137 kilometres southeast of Beijing,borders on the Bohai Sea in the east. The city gradually took shape in the 12th century when more and more settlements were established.It was a county town in the Qing Dynasty and became a municipality in 1928.
The climate of Tianjin is a temperate, continental-type monsoon climate with the four seasons distinct from one another. The mean temperature of the year is 12.2'c with that of January being -4'c and that of July 26.8'c. The average annual rainfall is 559.1mm., most of which is concentrate in summer. In winter, the port is frozen over for 80 days.