Jincheng, China

With a population of 2.2 million, Jincheng is an industrial hub in China's Shanxi province, fueled by abundant coal reserves that account for over a quarter of the country's total. However, this economic engine comes at a cost - the city is notorious for its air pollution, which the local government is working to address through measures like shutting down polluting factories and promoting cleaner energy sources.

Jincheng's climate is also a mixed bag, with frigid, dry winters giving way to sweltering, humid summers. And while the city boasts a rich historical legacy as a cradle of Chinese civilization, getting around can be a challenge, as it lacks a commercial airport and relies primarily on rail connections.

In short, Jincheng is a gritty, pragmatic choice for those drawn to its industrial might and coal-fueled prosperity, but the persistent bureaucracy and environmental woes may be a dealbreaker for those seeking a more livable, sustainable city.