In Metto, the long-lost blue sky is dazzling, and from time to time drifting through the snow-white clouds. Below the canyon is the Doxiongla River, which can be seen from a distance. Appreciating the surrounding scenery, a downhill section, we returned to the Doxiongla River, green grass, new yellow rapeseed flowers. Soon, a large river with a wide width crossed before us, and the Doxiongla River roared into the river, the Yarlung Zangbo.