South-to-North Water Diversion Project. It is considered from the perspective of sunlight. If it is in the southern hemisphere, I'm afraid it's the other way around.
Do you know how the wind is formed? Air flows to form wind, warm air flows up, and hot air flows down to form wind. Similarly, in the absence of major environmental impact (such as Siberian cold current, subtropical warm and humid airflow, etc.). ), as far as the regional situation is concerned, it is sunny in the south of Shannan, with warm air and cold air in the north. In this case, how do you think the wind blows? Yes, it's warm wind blowing up the mountain. And in the north, it's the cold wind coming down from the mountains. How do you think your door should be opened? Is it warm wind or cold wind?