There are four seasons in a year in China. March, April and May make the spring season. June, July and August make the summer season. September, October and November make the autumn season. December, January and February make the winter season.
Near the North Pole （北极） there are four seasons, too. But the winter season is very long. It is from November to April of the following year. The nights in winter are long. too. For more than two months you can't see the sun. Even at noon. In summer the days are long. For more than two months the sun never sets down（降落）, and there is no night.
