Vernal equinox pinyin

The pinyin of the vernal equinox: ch ū n f ē n

The vernal equinox is the fourth of the 24 solar terms. The sun reaches 0 and returns to 0. Starting from 0 is a good turning point. At the vernal equinox, Thai hexagrams were fully formed.

At the same time, they began to enter Dazhuang for divination, and the order of solar terms was ancient rain (now startled), vernal equinox and ancient Grain Rain (now Qingming). According to the usual order after the Han Dynasty, it is Qingming, but in essence it is Grain Rain.

When the vernal equinox comes, the rainfall increases obviously, and the national average ground temperature is stable above 10 degrees, which is the spring temperature defined by climatology. However, after the spring equinox and solar terms, the climate is mild, the rain is abundant and the sun is shining. Winter crops in most parts of China enter the spring growth stage, which is also the sowing time of early rice.

The vernal equinox has three stages: "wait for the mysterious bird to arrive, wait for the thunder to sound, and wait for the electricity to start." Sending pictures of spring cows is also one of the customs of the vernal equinox. In addition, the vernal equinox customs such as offering sacrifices to hundreds of birds and sticking birds' mouths also carry people's expectations for farming time.

The vernal equinox refers to the position of the sun between 0 degrees and 15 degrees of the yellow meridian during the period from March 20th to April 5th. But in fact, it usually refers to the day when the sun is really at 0 degrees of the yellow meridian: March 20 or March 2 1.

At the vernal equinox, there are no extreme days and nights in the world. After the vernal equinox, it began to be extremely daytime near the North Pole, and its scope gradually expanded. Near the Antarctic, the extreme day ends and the extreme night begins, and the scope gradually expands.