More than 1,000 years ago Hainan fishermen began living on the various islands of the South China Sea. During the early Ming Dynasty, the fishermen of Tanmen, Qionghai composed the Xisha, Zhongsha, and Nansha archipelago guide, or “Road Map”. During the Ming Dynasty, aside from fishing in the South China Sea, Hainan fishermen also built houses on some small islands in the Xisha archipelago, dug wells, planted trees, raised cattle, tended sheep, and became long term residents. Even now, traces of their houses, wells, and other artifacts can be seen on Yongxing and many other islands.