One of Koxinga's descendants on mainland China, Zheng Xiaoxuan 鄭曉嵐 the father of Zheng Chouyu (()) fought against the Japanese invaders in the Second Sino-Japanese War. Zheng Chouyu was born in Shandong in mainland China and called himself a "child of the resistance" against Japan and he became a refugee during the war, moving from place to place across China to avoid the Japanese. He moved to Taiwan in 1949 and focuses his work on building stronger ties between Taiwan and mainland China. Zheng Chouyu was born in mainland China, he identified as Chinese and he felt alienated after he was forced to move to Taiwan in 1949 which was previously under Japanese rule and felt strange and foreign to him. He is Koxinga's 11th generation descendant and his original name is Zheng Wenji.