Harm of Arctic Vortex Moving southward

The harm of the southward Arctic vortex is that it will cause a cold wave in China, resulting in extremely cold temperatures. Because the Arctic vortex often accumulates a large number of cold air masses, when it appears near China, it may induce a cold wave. In February 2020, an Arctic vortex passed near the northeast of China. Affected by this, the temperatures in Northeast China, eastern Inner Mongolia, Heilongjiang and other places have all dropped below MINUS 32 degrees, and the lowest temperature in the Tuli River in eastern Inner Mongolia is as low as MINUS 40 degrees, which is extremely cold in many places.