South China winter VS North China winter VS Vancouver winter, which winter?

I want to ask which of the three places is colder in winter?

Winter is coldest in northern China. The north of China refers to the Qinling Mountains and the north of Huaihe River. Winter in the north is generally below zero, and it will snow and freeze.

Followed by South China. Although the absolute temperature in winter in southern China is not very low, because of the high temperature, most areas have no heating facilities, and the winter is cold and bleak, even worse than the winter in the north (there is heating in the north).

Of these three places, Vancouver, Canada is the warmest in winter. Although Vancouver has a high latitude (north of 49 degrees north latitude), there is an Alaskan warm current passing through it in winter. The weather is warm, rainy and snowy, humid but not humid, and there are heating facilities indoors.