The Bayan Har Mountain is the watershed between the Yellow River and the Yangtze River. In a geographical location where the north and south longitudes are roughly the same, if the main stream bed of the Yangtze River is higher than the main stream bed of the Yellow River, then a tunnel can be dug across the Bayan Hara Mountains, and the water from the Yangtze River can flow automatically into the Yellow River. However, the actual situation is that at the same longitude position in the north and south, the main stream bed of the Yellow River is always much higher than the main stream bed of the Yangtze River, generally about 100 to 600 meters higher. This is also the reason why water diversion on the Western Front should be promoted. It can be seen that if a tunnel is dug across the Bayan Har Mountains at a geographical location with roughly the same longitude between the north and the south to connect the main stream of the Yangtze River and the main stream of the Yellow River, the water of the Yellow River can only flow into the main stream of the Yangtze River, not the other way around!
The topographic and landform characteristics of the Qinghai-Tibet Plateau tell us that due to the low and flat mountains between the Bayan Har Mountain pass and Dequ, a tributary of the Tongtian River, some tributaries of the Yellow River have cut through the mountains, forming the watershed between the Yellow River and the Yangtze River. It is no longer easy to identify. If a water vapor channel with an average cross-section depth of 2,000 meters and a width of 10,000 meters is dug at the pass of Bayan Har Mountain, and the bottom elevation of the water vapor channel is reduced to 3,000-2,500 meters above sea level, then it will extend to the northern slope of Bayan Har Mountain. The Yellow River bed in the valley (4500-4200 meters above sea level, for example, Eling Lake is 4268 meters above sea level) will be much higher than the altitude of the water vapor channel, prompting the main stream of the Yellow River to adapt to and use the steep terrain from high to low to seize the watershed southwards. , will inevitably lead to an uncontrollable situation in which all the water from the source of the Yellow River flows back into the Yangtze River Basin. Animaqing Mountain, which is located to the north of Bayan Har Mountain and maintains a parallel relationship with Bayan Har Mountain (4000-5000 meters above sea level, about 350 kilometers long and 50-60 kilometers wide, of which the peak is over 5000 meters above sea level) There are 18) and will become a new watershed between the Yellow River and Yangtze River basins. This artificially induced watershed recedes from south to north, expanding the water catchment area of ??the Yangtze River Basin and reducing the amount of precious water resources that originally belonged to northern my country.