Sun Mountain is about 12-15 kilometers away from Changde City. It is the highest mountain near Changde City. It takes about 8 kilometers from the foot of the mountain to the highest point. It takes 2-3 hours to walk. There is also a walking plank road on the top of the mountain. You can overlook Changde City and Liuye Lake under the mountain. Watching the starry sky on the top of the mountain is also the best choice for Changde.