Tianjin is a metropolis in North China and one of the five national central cities. It is governed as a direct-controlled municipality, one of four such designations, and is thus under direct administration of the central government. The city borders Hebei Province and Beijing Municipality, bounded to the east by the Bohai Gulf portion of the Yellow Sea. As a dual-core city, Tianjin is divided into the old city and the Binhai New Area. As a treaty port since 1860, Tianjin has been a major seaport and gateway to the nation's capital.

Fukuoka is the capital city of Fukuoka Prefecture and is situated on the northern shore of the island of Kyūshū in Japan. Voted number 14 in 2010's poll of the World's Most Livable Cities, Fukuoka is praised for its green spaces in a metropolitan setting. It is the most populous city in Kyūshū, followed by Kitakyūshū. It is the largest city and metropolitan area west of Keihanshin. It’s known for ancient temples, beaches and modern shopping malls, including Canal City. Maizuru Park contains ruins of 17th-century Fukuoka Castle.