Why did Shanghai become an important deepwater port and shipping centre?

Shanghai’s rise as a prominent deepwater port and shipping center is rooted in its geography and historical development. During the Song dynasty, the city's natural advantages as a deepwater port were recognized as coastal and inland shipping expanded.1

The city serves as the natural outlet for the vast hinterland of the lower Yangtze River, which facilitated its growth into a major commercial hub. Its position was further solidified in the 19th century when the Treaty of Nanjing opened the city to unrestricted foreign trade, leading to the establishment of major international banks and commercial houses.1

Additionally, the Huangpu River provides an excellent harbour where, at high tide, oceangoing vessels can navigate directly to the city. Over time, the development of specialized terminals along the Huangpu and the southern bank of the Yangtze, alongside a deepwater port operation in Hangzhou Bay initiated in 2005, has significantly expanded the city's handling capacity.2