Four-character idioms about the four seasons

Four-word idioms about the four seasons are as follows:

1, birds and flowers are singing in spring, everything is reviving, spring is bright, spring is blooming, spring is vigorous, spring is as deep as the sea, spring caresses your face, spring is pleasant, spring returns to the earth, it is gentle and drizzling, spring is full, ice and snow melt, spring is in March, flowers bloom and grass bloom and fall.

2. Summer: scorching sun, scorching hot sun, hot summer in xia yang, flowing gold and gravel, scorching hot sun, unbearable heat, sweating like rain, steaming hot sun, scorching hot summer, sweating like rain, high umbrella, unbearable heat.

3. Autumn: autumn is crisp, autumn leaves fall, fruitful, autumn wind blows gently, autumn water is long, golden osmanthus is fragrant, grains are abundant, the sky is high and the clouds are light, autumn leaves are cool, autumn colors are pleasant, autumn wind is bleak, autumn rain is continuous, west wind leaves fall, and spring flowers and autumn fruits are quite critical.

4. Winter: nine winters, ice and snow, snow-covered, snow cellar, snowy day, frozen snow, freezing thousands of miles, dripping into ice, freezing in the cold, snow omen, wind knife and frost sword, biting wind, cold winter, cold wind, north wind whistling, goose feather and snow, snow-covered, north wind whistling and snow wrapped.

Seasonal reasons:

The fundamental reason of seasonal variation is that the earth's rotation axis is not perpendicular to its orbital plane, and the deflection angle is 23 degrees and 26 minutes. In different seasons, the solar illumination received by the northern and southern hemispheres is unequal and changes periodically. The sunny hemisphere is summer, the other half is winter, and spring and autumn are transitional seasons. When the direct point of the sun is close to the equator, the sunshine conditions in the two hemispheres are similar.

But the trend of seasonal development is the opposite-it is autumn in the southern hemisphere and spring in the northern hemisphere. Zhang Baokun, a modern scholar, put forward a new seasonal standard, in which the average temperature is beginning of winter, and the average temperature drops steadily below 10℃ for five consecutive days. When the temperature rises steadily above 22℃, it is long summer, and the period when the average temperature is 10-22℃ is spring or autumn.