Is the peak high or the valley high during the day?

Unless there are special circumstances, the temperature in the valley is very high day and night. The reasons are as follows: first, the valley is low in altitude and the top of the mountain is high in altitude, which means that the temperature in the valley will be high. Every time the altitude rises 1000 meters, the temperature will drop by 6 degrees. Secondly, the air resistance at high altitude is small and the flow is large, so the temperature will fluctuate.