This dissertation explores Japanese imperial history in East Asia and focuses on a group of cross-boundary people --Taiwanese sekimin (Taiwanese who registered as Japanese subjects) and Japanese--who went to the treaty port of Shantou in southern China during the period between 1895 and 1937. The starting time point (i.e., 1895) corresponds to the signing of the Treaty of Shimonoseki, by which Japan acquired Taiwan as a colony and informal privileges in Chinese treaty ports. The ending time point (i.e., 1937) corresponds to the decline that Shantou\u27s Japanese community experienced owing to the outbreak of the Second Sino-Japanese War on July 7, 1937. By examining the official documents of the Taiwan General Government, commercial report...