Introduction to Sandao Valley: Sandao Valley is about 3 kilometers long, with a water depth of about 30 meters and a river width of about 30-40 meters. The peaks on both sides of the canyon are between 270-380 meters above sea level, which contains unique geology. With its structure and rich medicinal resources, the landscape is composed of waterfalls, strange rocks, giant trees, dragon pools, lagoons and other landscapes, forming more than ten canyon landscapes with their own characteristics, relatively independent, integrated and layered with mountains.