There is a question in geography, that is, whether cyclones form sandstorms or anti-cyclones, cold waves and spring droughts, and why. There is another question, I remember a sentence.

Sandstorm is a cyclone, and the low-pressure center is an updraft, which can carry the sand on the ground into the air and transport it with the high-altitude airflow.

The spring drought is an anticyclone, and the anticyclone center flows downward. The weather here is sunny, so the evaporation is greater than the precipitation.

The cold wave is mostly anticyclone, and the trough line corresponding to the high altitude is the high-altitude airflow blowing from the north, so it is cold.

As for the weather in the north, there are sandstorms and spring droughts. As for the cold wave, I think there should be one.

You can refer to the main path of the cold wave invading China:

West Road: Entering Xinjiang, China from western Siberia, and advancing to the southeast via Hexi Corridor.

Middle Road: After entering China from central Siberia and Mongolia, it passes through Hetao area and south-central China.

East Road: Enter the northeast of China from eastern Siberia or eastern Mongolia, and go south via North China.

East Road and West Road: The cold air in East Road goes south from the lower reaches of Hetao, and the cold air in West Road goes south from the southeast of Qinghai. Two cold air often meet on the east side of the Loess Plateau, between the Yellow River and the Yangtze River, causing a wide range of rain and snow, and then the two cold air meet south, causing strong winds and obvious cooling.