Foochow, also known as Fuzhou, is a city located in southeastern China and was one of the key ports opened to foreign trade following the Treaty of Nanjing in 1842. The city became a significant hub for foreign commercial activities, especially for British and American merchants, leading to profound economic and social transformations in the region. The opening of Foochow to foreign influence marked a pivotal moment in China's integration into the global economy during the 19th century.