Huayang Cave

　　The Huayang Cave is located on the west side of the Laohugang Hillock in Maoshan Mountain, about 300 meters away from the Yuanfu Wanning Palace in the north. It is full of "Xianqi"(magic air) for the reason that in natural environment the content of negative oxygen ions is as high as 10,000/cubic meter. The negative oxygen ion is also known as the air vitamin and the "air element for longevity".