Isn't Sichuan a basin, a plateau, and unlike Tibet, why do many people say that they have altitude sickness when they travel to Sichuan, and some of them are still very serious?

Hello: 1. Sichuan province spans many geomorphic units such as Qinghai-Tibet Plateau, Hengduan Mountains, Yunnan-Guizhou Plateau, Qinba Mountain Area and Sichuan Basin. The terrain is high in the west and low in the east, and it slopes from northwest to southeast. The highest point is Gongga Mountain, the main peak of the western snow mountain, with an altitude of 7556 meters. The terrain is complex and diverse. It is adjacent to Longmen Mountain in Daliangshan, Sichuan Basin and its marginal mountains in the east, and western Sichuan alpine plateau and southwest Sichuan in the west. Mountains, plateaus and hills account for about 97.46% of the province's land area. Except for the plains and hills at the bottom of the Sichuan Basin, the height difference of ravines in most areas is more than 500 meters. The lowest is in Yulin River, Linshui County, Guang 'an City, which is just184m above sea level and over 7300m away from Gongga Mountain. In China, only Xinjiang and Tibet can compare with the difference of surface fluctuation.

Sichuan has beautiful scenery and pleasant climate, and there are many famous scenic spots, such as Jiuzhaigou, Huanglong and Emei Mountain, which are famous at home and abroad, so tourists go to these scenic spots when they go to Sichuan. Jiuzhaigou and Huanglong usually travel together, because they are very close, and they are both in Aba Tibetan and Qiang Autonomous Prefecture, Sichuan Province. Jiuzhaigou is about 3000 meters above sea level (2000 meters above sea level at the mouth of the ditch and more than 4000 meters above sea level at the middle peak), even if there is altitude sickness, it will not be too great. As long as it is prevented in advance, it is no problem. As for Huanglong, there are old people, so I suggest not to go, because Huanglong is about 4000 meters above sea level, and the old people are very old.

3. Emei Mountain is located in Emei City, Leshan City, Sichuan Province, China, and the end of the mountain is located in Hongya County, Meishan City. It is one of the "four famous Buddhist mountains" in China, with steep terrain and beautiful scenery, and is known as "Emei is the best in the world". The top of the Buddha on the mountain is the highest, with an altitude of 3099 meters, which is more than 2700 meters higher than Emei Plain. The climate of Mount Emei is not only restricted by three factors (radiation, atmospheric circulation and geography), but also the topography plays a very important role. The mountainous area is cloudy and foggy, with abundant rainfall (the famous "Huaxi Rain Screen"), and the vertical temperature changes significantly: there are cold areas (above 3047 meters above sea level, with an annual average temperature of 3.0℃ and an extreme minimum temperature of -20.9℃), sub-cold zones (above 2200 meters to 3047 meters above sea level, with an annual average temperature of 7.6℃) and temperate zones. Annual average temperature 13. 1℃), subtropical (below altitude 1200m, annual average temperature 17.2℃, extreme maximum temperature 38.3℃). The average annual precipitation in Emei Mountain is 1922 mm, the average annual relative humidity is 85%, and the average annual snowfall days are 83 days. If you travel to Mount Emei, you will encounter such a situation. It's very hot down the hill, so you must rent a cotton down jacket when you get there. It snows all year round in the mountains.

Traveling to Sichuan means going to the above places, so it's just right. People who are not used to it will say that they have a little altitude sickness, but young people will be fine as long as they get through it. If you stay in Chengdu, it will definitely not be like this. Chengdu is located in the west of Sichuan Basin, in the hinterland of Chengdu Plain, with flat terrain and criss-crossing rivers, most of which are plains, and belongs to a gourmet paradise.