In Maanshan, Zichong Village, Sanhai Township, Lingshan, the mountain is a karst butte shaped like a saddle. There are three caves at the foot of the mountain: Dongshengyan, Dipu Rock and Duanduanyan.

1960, Guangdong Normal University, Archaeological Team of Guangdong Provincial Cultural Relics Management Committee and Jia Lanpo, Gu Yumin and Gu Yan of Chinese Academy of Sciences found 1 temporal bone drum, two teeth and the upper part of left femur in Dongshengyan, 1 parietal bone and three frontal bones in Portuguese rock, and bear fossils and calcified snails were also unearthed in Dongshengyan. Experts identified it as a human bone fossil at the end of Pleistocene and named it Lingshan human fossil out of the land. In addition, the 1 parietal bone, 1 hip bone, 1 upper molar tooth and two plate teeth unearthed from the Shandong ancient human site in Shibei Mountain represent elderly individuals, belonging to the Paleolithic Age, and 65,430 were found in the Zhongxiushan sliding cave site in Shitang Township.

1962 In February, members of Lvshui Village, Lvshui Commune, Lingshan City, Guangdong Province dug a bronze drum on the hillside. Upon learning of this, the Guangdong Provincial Cultural Relics Management Committee sent personnel to the site to investigate and transport the bronze drum back to Guangzhou. It was found that the hill of the bronze drum was very high, about 200 meters, and the bronze drum was buried on the hillside about 30 to 40 meters above the ground. No ancient cultural sites or tombs were found around the hills, and no coexistence relics were found nearby. Only one Bao Tong was found in the remaining soil in the bronze drum, indicating that this bronze drum was buried in the soil in the Tang Dynasty or later. The bronze drum is very big, with a surface diameter of 8 1 and a foot height of 47 cm.