Guigang, China

This prefecture-level city in eastern Guangxi is home to over 4.3 million people, but don't let the population figure fool you - Guigang is a relatively poor region, with a GDP per capita of just $2,400. Transportation and logistics are important parts of the local economy, with over 100 million tons of goods passing through its ports annually. However, the subtropical monsoon climate can be a persistent headache, with annual rainfall exceeding 57 inches. While Guigang's location makes it a major transportation hub, the reality is that it's a rather unremarkable city that offers little to draw in newcomers beyond pragmatic business opportunities.