Wuzhou, China

With a population of 2,820,977, Wuzhou is a sizable city, but one that may not be for the faint of heart. The subtropical climate means long, sweltering summers and wet, gloomy winters - not ideal for those seeking mild weather year-round. And despite its modern transportation links, the bureaucracy can be a persistent headache for foreign residents.

On the upside, Wuzhou has carved out a niche as a hub for the synthetic gemstone trade, offering opportunities for those in that specialized industry. The city also boasts a unique regional cuisine, including the popular Wuzhou honey date. But overall, Wuzhou seems better suited for those drawn to its commercial potential rather than a relaxed, scenic lifestyle.