Divide the four seasons according to the solar terms. Which month do March and April belong to?
Spring, summer, autumn and winter, also known as the "four seasons", are the results of the earth's orbit around the sun. Spring begins with "beginning of spring" in the 24 solar terms, and summer begins with "Long Summer". Autumn begins with beginning of autumn; Winter begins in beginning of winter. It is the most accurate in the Yellow River Basin. The basic laws summarized by the working people in China are: spring birth, long summer, autumn harvest and winter storage. This is also the basic idea of the relationship between man and nature elaborated in China classics such as Huangdi Neijing.
Extended data
Our earth revolves around the sun and rotates around its own axis, but the axis is not perpendicular to the orbital 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.
When the sun shines directly on the Tropic of Cancer, the northern hemisphere gets more solar heat, and the day is longer than the night, so the highest temperature in the northern hemisphere is summer. At this time, the sun shines obliquely in the southern hemisphere, getting less solar heat, and the night is longer than the day. Therefore, the southern hemisphere is in the coldest season of the year-winter. When the earth revolves around the sun for half a week, the direct point of the sun moves from the tropic of cancer to the tropic of Capricorn, and the solar heat gained by the northern hemisphere gradually decreases, from summer to autumn, and then to winter; On the other hand, the southern hemisphere goes from winter to spring, and then to summer. But the earth's orbit around the sun is not a standard perfect circle, so the summer in the southern hemisphere is slightly hotter than that in the northern hemisphere, and the winter is colder than that in the northern hemisphere.