Introduction to Hidden Dragon Mountain Spring: The second one is called "Fairy Water". In the Hidden Dragon Hundred Waterfalls Scenic Area, not only the mountain springs are flowing all year round, but there are also many mountain springs on the top of the rocks. There is a mountain spring on the top of "Xiaoliang Mountain" called Zanglong Mountain Spring. Longshan Spring is the only water source for Tianhuangping Hydropower Station and one of the sources of the Huangpu River, the mother river of the Shanghai people.