The scenery is really beautiful. It's very tired to climb the mountain. It's still a third of the way to Tianyuan. In the middle of climbing to find the Tiandong cave, there is no light in the cave. It is suggested that the elderly and children should not climb fat. It is difficult to climb it! ________ Downhill we walked down, the road is not very steep, but very hurt foot, down! Also, there is no 4G network signal in the mountains!