What beautiful scenery did Sichuan-Tibet and Qinghai-Tibet routes pass through respectively?

The Sichuan-Tibet line starts from Chengdu, goes west along National Highway 3 18, passes through Erlang Mountain, Luding Bridge, Kangding and Litang, crosses Jinsha River Bridge and enters Tibet. Arrive in Mangkang, go to Bangda from there, turn 72 south to Nujiang and Suoxian, watch Ranwu Lake and Bomi at close range, and overlook Nanjiabawa Peak, Yixiantian Waterfall, Lulang Grand Canyon, Linzhi, Milla Mountain Pass, Mozhugongka and Lhasa. This road is the most beautiful scenery in Tibet, so don't miss it. Therefore, I suggest you take the bus in sections first, and then savor it. The Qinghai-Tibet line, from Lhasa to Golmud, Qinghai, passes through grassland, Tanggula, Wudaoliang, Tuotuo and Kunlun Mountain Pass along the way. The scenery of this line is average, even dull, without surprises. I think, if time permits, you should connect these two lines in series, which not only conforms to the principles of economics, but also conforms to a variety of experiences. Attention should be paid to going to the plateau: first, the weather, and it is very important to choose the season. July, August and September are the best seasons for tourism in Tibet, but they belong to the rainy season. Especially in rainy season, Sichuan-Tibet highway is a frequent section of debris flow, landslide and landslide, and its potential risk is very high. Therefore, it is safest to go before the rainy season. Because after a winter's severe cold, roads and mountains are frozen firm and tough, and the safety factor is high. Although it doesn't rain after the rainy season, after the baptism of rain, the road is muddy due to high temperature in summer, which leads to a difficult journey and crisp mountain, and landslides may occur at any time, which reduces the safety factor. When you are away from home, safety comes first. I suggest that you finish your trip before the end of June. Of course, when the rainy season comes, it will be a pity not to see Mount Everest. Second, how to face altitude sickness, with a normal heart, not excited, not excited, not impatient, not tired, is enough to resist any altitude sickness. Of course, necessary drugs should be prepared in advance, such as antipyretics, painkillers, antidiarrheal drugs, anti-inflammatory drugs, rhodiola and so on. Both oral liquid and capsules should be taken one week before departure. The function of rhodiola is to increase the oxygen content in the blood and help your body adapt to the local environment as soon as possible. Going to the plateau, drinking butter tea, highland barley wine and eating Ciba can help you adapt to the environment as soon as possible. Third, due to the plateau climate, the temperature difference between morning and evening is large, so whenever you go, you should bring warm clothes, such as down jackets. Keeping warm is also an effective way to resist altitude sickness. A cold at high altitude can be very fatal or even life-threatening, so keep warm.