Why is there a strong cold wave in the case of global warming?

Global warming refers to the increase of atmospheric temperature, the increase of carbon dioxide in the atmosphere, and the endothermic warming of carbon dioxide, which leads to global warming; However, the temperature of global warming does not change much, about 0.5 to 1 degree Celsius, but even so, there will still be many effects. Then there is the cold wave, which means that the cold air (hereinafter referred to as the cold front) moves to a place where the temperature drops 10 degrees Celsius and above within 24 hours. Taking Northeast China as an example, due to the difference between land and sea in winter, the land temperature in Eurasia is lower than the ocean temperature, forming a high pressure on the land, that is, the Mongolia-Siberia high, and the Hawaiian high on the surface of the Pacific Ocean. The high pressure makes the near-surface air move to the low pressure area, that is, the horizontal pressure gradient force on the near-surface air points to Mongolia and Hawaii. Due to the influence of the earth's rotation, the wind direction in the northern hemisphere shifts to the right, that is, the northerly wind, and the cold air of Mongolia-Siberia high pressure passes by, making

In a word, the cold wave attack is caused by the difference of thermal properties between land and sea, and has nothing to do with global warming.