There are four seasons in a year in China. February, March, and April make the spring season. May, June and July make the summer season.August, September and October make the autumn season. November, December and January make the winter season.
Near the North Pole(南极)there are only two seasons. They are winter and summer. The nights in winter are very long. 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, and there is no night.
In the tropics(热带) there are also two seasons: a rainy season and a dry season.