The most famous ancient poems about the Xiaohan solar term include Yuan Zhen's "Ode to the Twenty-Four Qi Poems on the Xiaohan December Festival", Pei Yizhi's "Walking in Qujiang in the Cold Winter", and Hongli's "Ancient Dry Plum Song" ", Wang Anzhong's "Liu Hua Dong Ci No. 2 Camellia Slogan", Liu Xun's "Darcissus", etc.
Snow is the first solar term in traditional late winter and the penultimate solar term among the twenty-four solar terms in a year. The arrival of Xiaohan marks the arrival of traditional late winter, which is the last step into winter.
At this time, the sun crosses 285 degrees of ecliptic longitude. From the perspective of modern astronomical and geographical knowledge, the sun continues to return north and the daytime continues to grow. But in terms of climate temperature, it is the period when the ground temperature in the northern hemisphere loses the most heat. The so-called severe winter and severe cold refer to this period.
From the traditional counting of nine, the Xiaohan solar term enters the 29th, and part of the period falls on the 39th, which can be said to be one of the coldest periods of the year. Moreover, due to the frequent wind and snow at this time, the sun's heat is not as high as that of the Great Cold, so it is often said that the Minor Cold is colder than the Great Cold.
But after passing the Xiaohan, you have also passed the coldest stage of winter, because, soon, spring will arrive.
How did the ancients view the coldness of Osamu?
Temperature of Xiaohan:
During Xiaohan, the average temperature in Beijing is generally around -5℃, and the extreme minimum temperature is below -15℃; in the northern part of Northeast China, the average temperature at this time is Around -30℃, the extreme minimum temperature can be as low as -50℃, and the average maximum temperature in the afternoon is only -20℃.
The average temperature in the areas north of 45°N in Heilongjiang, Inner Mongolia, Xinjiang and the Northern Tibetan Plateau is around -20°C, and the average temperature in the area west of the Hetao near 40°N is around -10°C.
The average temperature along the Qinling Mountains and Huaihe River is around 0℃. There is no seasonal frozen soil south of this line, and there is no obvious overwintering period for winter crops. At this time, the average temperature in the Jiangnan area is generally around 5°C. Although the fields are still full of life, cold air also moves southward from time to time, causing certain harm.