Which Chinese city was once claimed by nine different countries?

The city associated with the historical claim by multiple countries is Tianjin. During the late 19th and early 20th centuries, Tianjin became a significant and strategic port city in China. Following the Second Opium War (1856-1860), a series of unequal treaties allowed various foreign powers to establish concessions within Tianjin. These concessions were zones controlled by foreign nations rather than by Chinese authorities, leading to a unique situation where a total of nine different countries—such as Great Britain, France, Germany, Japan, and Russia—maintained enclaves with varying degrees of autonomy.

This presence of multiple foreign powers had a profound impact on the city's development, culture, and architecture, which still reflect a blend of international influences today. Understanding the unique historical context of Tianjin helps illuminate why it was the focus of international claims, marking it as a city of significant geopolitical importance during that era.