The Seven-hole Bridge in the Grand Canyon and the Blue Wave of the Dog River. Walk along the stone wall on the right bank, to the suspension bridge but the bridge. Cliff and cliff crossing the trestle road, high dome across the natural bridge, hole width 7 Zhang high 20 Zhang, Zhongruitongluo color bridge high. Not far to the demon wind tunnel, the Landscape came roaring into the cave. Fly back to the railway suspension bridge and cross the rainbow sunset.