Introduction to Zheng Chenggong: Zheng Chenggong was originally from Shijing Town, Nan'an, Fujian. There is a passage in the Zheng family genealogy included in "Selected Genealogy Materials on Relations between Fujian and Taiwan". Zheng Chenggong's ancestors fled to Fujian during the Yongjia period of the Eastern Jin Dynasty: "Maybe in Sanshan, "In Puzhang and in Chaozhou, they are not the same place." Among them, the branch that arrived in Zhangzhou settled in Longxi in the late Song Dynasty, which is now Longhaiyangxi Village. In the Yuan Dynasty, it moved from Yangxibo to Poshan, which is now the ancient county of Yancuo Town, Longhai, Fujian. Later, he moved from Guxian County to Nan'an.