What's the change in spring?

Changes in spring: the temperature gets warmer and everything recovers.

The first spring of the four seasons represents warmth, and the qi of yin and yang begins to change, and everything grows with the rise of yang. In daily life, people usually regard the arrival of beginning of spring solar terms as beginning of spring, and beginning of spring is defined from the perspective of astronomy. Meteorological departments generally divide the solar calendar into four seasons, and March-May is spring.

At present, the method of "waiting for average temperature" proposed by modern scholar Zhang Baokun is often used to divide the four seasons in China. Taking the five-day average temperature as the standard, the five-day average temperature after winter passes 10℃ and begins to enter spring. When the temperature is higher than 22℃, it means the end of spring and the beginning of summer.

In spring, the northern hemisphere of the earth began to tilt towards the sun, receiving more and more direct sunlight, so the temperature began to rise.

In spring, plants begin to sprout and grow, and many flowers bloom. Hibernating animals wake up, many animals with eggs for the winter hatch, and birds begin to migrate, leaving the wintering ground for breeding grounds.

Spring Equinox

There are many ways to divide the four seasons. In daily life, people usually regard the arrival of beginning of spring solar terms as beginning of spring, and beginning of spring is defined from the perspective of astronomy. Meteorological departments generally divide the solar calendar into four seasons, and March-May is spring.

However, this division method has a disadvantage for some places. According to this method, March in the south of China belongs to spring. At this time, of course, the Yangtze River valley is pink and green, and it is spring. However, Heilongjiang Province is still freezing cold and snowy.

Therefore, meteorologists have formulated a standard to divide the four seasons according to the temperature change, that is, the five-day average temperature. When the average temperature of five days after winter passes 10℃ stably, it begins to enter spring, and when the temperature is higher than 22℃, it means late spring and early summer.