2, the vitality of spring, the excitement of summer, the moment of autumn, the high desert of winter;

3. Spring is full, summer is full of vitality, autumn is lonely, and winter is a silver dance;

4. Spring sprouts, summer buzzes, autumn leaves wither, and winter is as warm as spring.

5. Spring, summer, autumn and winter refer to the four seasons of the earth in a year, which is the result of the earth's orbit around the sun.

6. The origin of the four seasons: Our earth is constantly revolving around the sun, but it is also revolving around its own axis. However, the earth axis is not perpendicular to the track plane, but has an inclination of 23 degrees and 27 minutes. It is precisely because of this tilt that the direct point of the sun on the earth's surface moves between the Tropic of Cancer and the Tropic of Capricorn, thus forming four seasons: spring, summer, autumn and winter.