Tianjin or Jin in short, one of the four municipalities directly under the Central Government in China, is located in the northeast of the North China Plain and is the closest seaport to Beijing. The city is one of the biggest industrial and port cities in China and it is also known as 'the diamond of the Bohai Gulf'. Tianjin covers an area of 11,000 square kilometers and has a population in excess of 10 million people. Historical changes in the past 600 years have made Tianjian a unique city with a mixture of ancient and modern in both Chinese and Western styles.