Xu Xuan's Vernal Equinox

The vernal equinox is the midpoint of 90 days in spring. One of the 24 solar terms, the Gregorian calendar is around March 20 every year, and the sun is located at 0? (vernal equinox) On the vernal equinox, the sun shines directly at the equator of the earth, and the seasons in the northern and southern hemispheres are opposite. The northern hemisphere is the vernal equinox and the southern hemisphere is the autumnal equinox. The vernal equinox is a new year in Iran, Turkey, Afghanistan, Uzbekistan and other countries, with a history of 3,000 years.

Next, I will bring you a Tang poem about the vernal equinox. Vernal equinox

Spring Equinox

Don

On the fourth day of mid-spring, spring scenery is in the middle. Green fields go around the moon, and clear clouds are intermittent.

I still swallow, and the flowers have fallen. The tall buildings are late and the songs are inaudible.

Brief introduction of poet

Xu Xuan (9 16? 99 1 year) writers and calligraphers of the five dynasties and the early song dynasty. Chen Ding was born in Guangling (now Yangzhou, Jiangsu). Wu Xueshulang, a patent of Zhi Zhi in Southern Tang Dynasty, was a bachelor of Hanlin, a senior official in the official department, and later Li Yugui was a servant of Song Dynasty, so he was known as Xu Qi Province. At the beginning of Chunhua, it is difficult to demote the static army marching Sima. He proofread the imperial edict and Zheng Zheng's verdict. Merit lies in books, and good biography of Li. I have a literary name with my brother Xu Kai. What do you mean? Erxu? ; And call it Han Xizai and Jiangdong? Han Xu? .