What were the serious cold waves in ancient times and how did the ancients spend the cold weather?

As we all know, winter is very cold. In ancient times, heating could only rely on fire, but there was no advanced cold-proof technology and good medical equipment in ancient times. The ancients may have caught a slight cold and died of illness. So what are the serious cold waves in ancient times that we are familiar with? How did the ancients get through it?

There were four severe cold waves in ancient times. The first time was in the Western Zhou Dynasty. Even animals can't stand the cold, and tigers and leopards start to migrate, so it's very cold. The second time was in Liaodong Bay, which was frozen for three years and did not melt. The third time was in the Southern Song Dynasty. The Suzhou-Hangzhou Canal often froze, so that the State of Jin went south. The fourth time was in the late Ming and early Qing dynasties, and the average temperature was much lower than usual. Unlike modern people, the ancients did not have down jackets, heating, air conditioning and other equipment, even if it was cold. Then, in the face of the cold wave, the ancients still thought many ways.

One is to sew the cotton planted into clothes to keep out the cold. In addition to selling cotton to earn money, the ancients sewed cotton in their clothes in winter, so it wouldn't be too cold. Rich people will also buy some animal fur to make a coat to wear, which will be warmer. The second is to sew some small objects, such as gloves and scarves, to keep out the cold. Generally, things in winter will be preserved before winter comes, and people will still wrap themselves up a little thicker. The third is to build a heatable adobe sleeping platform to keep out the cold. There was a record of heatable adobe sleeping platform in Han Dynasty. People built a cuboid out of mud, on which they could sleep and make holes to make a fire. This is a good way to kill two birds with one stone. It can cook and keep out the cold. Until now, people can still see heatable adobe sleeping platform in caves, and they are still using this ancient method to keep out the cold.

In fact, there are many ways to keep out the cold in ancient times, so I won't list them here. Rich people don't have to worry about winter at all, but ordinary people and the poor should be the most worried. Many people froze to death every year in ancient times.