The Huangpu River that flows through Shanghai divides the metropolis into two main areas: Puxi and Pudong. The former, which literally means "west of the river," is all about the city's historical legacy. It's where thousands of Western-style buildings that were built in the late 19th and early 20th centuries are located. While the former, rural Pudong, meaning "east of the river," has seen exchanges, banks and many car factories spring up and flourish in just three decades.