History of Japan
A Xiangshan (Zhongshan), Guangdong born Chinese compradore named Su Jiesheng had a Chinese wife in Guangdong, but he also went to Japan and took a Japanese concubine and had a child by a Japanese maid who gave birth to his son Su Manshu (1884-1918), who was raised by the concubine but then also raised by the Guangdong-based wife. The Japanese maid left when he was 3 months old so the Japanese concubine was called Kawai-sen and the boy grew up in Yokohama until he was 6 when he was sent to Guangdong in China. He arrived in Guangdong in 1889. He went back to Japan in 1898 to Yokohama and to Tokyo in 1902.