Introduction to Tianci Lake: Tianci Lake is located about 500 meters south of Dahe Miao Village. It is a natural lake with karst landform, like a mirror reflected in the green bushes. The lake is 350 meters long, about 100 meters wide, and 980 meters above sea level. meters, there are three springs in the lake, and the water quality is excellent. It is named because the lake water changes different colors with the seasons. Sometimes it turns iron red, sometimes it turns earthy yellow, sometimes it turns light green, and sometimes it is crystal clear, so it is also called the Color Changing Lake.