What is the saying about the south wind blowing in early winter?

The south wind blows in early winter, and the fur coat is at the root of the wall.

After the solar term in beginning of winter, if the weather starts to blow north, it will be colder in winter. Then, at this time, we will take out our clothes to keep out the cold. For example, mink, or fur coat, at this time, the prices of cotton-padded clothes, fur coats, mink and other clothes in winter will rise rapidly, and such prices may even rise to as expensive as gold.