Which countries are the strongest countries in the Winter Olympics?

Looking at the past four Winter Olympics since the 21st century, those who can reach the top of the Winter Olympics medal list are generally developed countries in Western Europe, Northern Europe and North America. Among them, in the past four Winter Olympics, the United States and Canada have all entered the top five in the medal list, while Germany and Norway have entered the top five in the medal list in three of them. Other countries with strong winter sports capabilities include Russia, Sweden, Switzerland, South Korea, Austria, the Netherlands, the Czech Republic and Japan.