What does this sentence mean, "The solstice in winter is very warm and the Spring Festival is very cold"?

This sentence is an ancient proverb handed down from generation to generation by our ancestors. If the winter solstice is sunny, it will definitely rain during the Spring Festival. If it is warm in winter, it will definitely get cold in the Spring Festival. Therefore, in ancient times, people often used the weather conditions and solar terms of the winter solstice to further speculate on the weather in the later period. This speculation method may not be accurate, but it is indeed a valuable asset that has been circulating for a long time.

The solar term from winter solstice is the simplest way for farmers to calculate the weather. For the old farmers who like to turn over calendars, they often refer to Tong Sheng and the old yellow calendar a month ago to see the specific date of the winter solstice. In addition, the weather conditions on the day of the winter solstice solar term can also predict the rainfall in the coming year. For example, if the winter solstice is sunny, there will be more rain during the Spring Festival.

Winter solstice solar terms usually represent the arrival of cold winter, because winter solstice is the shortest day in a year for people all over the northern hemisphere. After the winter solstice, the law in the northern hemisphere is that the days are long and the nights are short. At noon, the height of the sun rises gradually, which indicates that winter is really coming. At the same time, the winter solstice can represent the changing law of the weather from cold to coldest and then gradually warming, so the winter solstice is the simplest and most intuitive day to predict the weather and rainy weather.

There is an old saying that "it will not be a good year if it is cold or not", which means that abnormal climate will definitely cause hot and cold changes. Different regions have different proverbs. In addition to this sentence, there is "if the solstice in winter is warm, it will be cold until mid-March;" If the winter solstice is very cold, it will warm up early next spring "and" if the winter solstice is warm, it will be as hot as fire until the end of summer ",so the proverb is only a preliminary prediction.

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