Why is the weather in China mainly affected by cold front?

During the front movement, the cold air mass plays a leading role, pushing the front to move to one side of the warm air mass. This front is called a cold front.

The cold front has a wide range of activities in China, almost all over the country, especially in the winter, and it is more common in the northern region. It is one of the most important weather systems that affect the weather in China. In winter, the air in Chinese mainland is dry, and the cold front mostly enters the northwest of China from Siberia and Mongolia, and then goes south. The cold air brought from Siberia meets the local warmer air, and there is almost no precipitation on the front. Therefore, when the cold front crosses the border in winter, only strong winds and cool weather are formed. There are more than two types of cold fronts in winter, which can reach South China, but after moving to the Yangtze River basin and South China, they often turn into one type of cold front or quasi-static front. There is more than one cold front in summer, which has a small influence range and generally only reaches the Yellow River Basin. Thunderstorm weather in summer in northern China is closely related to cold front activity.