At low tide, the coast near Mashan ( ) https://archive.org/details/insightguidetaiw00vivi_0/page/222 in northern Jinsha is 1 kilometers from Jiaoyu (Chiao I., Reef I.; / ), an island originally part of Kinmen County in Dadeng Subdistrict, Xiang'an District, Xiamen, Fujian, People's Republic of China.