How about three or nine days of civilization?

It is not good to be uncivilized for three or nine days.

If the weather is not cold but warm in the "three or nine days", the originally frozen river will be civilized. Then, it indicates that the coming year is not a good year.

If winter is not cold, there will be less rain and snow, which is not conducive to alleviating the drought in spring. Moreover, if it is not cold in winter, pests and diseases will breed over the winter, and pests and diseases will break out in the coming year. In ancient times, there were no pesticides. If you get diseases and insect pests, it will mean a big reduction in production and people will go hungry.

Moreover, it is not cold in winter, which does not mean that there will be no cold air, but it will be postponed, and there will be a high probability of "late spring cold" weather next spring. The occurrence of late spring cold will lead to the freezing injury of young crops, and the seeds sown will rot and fail to emerge, which will bring great losses to farmers.

As a result, food, fruits and vegetables are reduced, and ordinary people have to spend more money on living expenses. Therefore, it is not necessarily a good thing to be warm in winter, but I hope it will be colder and snow more in winter, which indicates that next year will be better.

Calculation method of "Sanjiu"

There is a saying "Jiujiu" in the China lunar calendar, which is used to calculate the seasons. The calculation method of trousers is that every nine days is a "nine", the first nine days are called "one nine" and the last nine days are called "two nine".

And so on, until "99", that is, until the ninth nine days, the number reached 998 1 day. At this time, winter has passed and spring has arrived. Generally, it is the coldest in "Sanjiu". "The third September after the winter solstice" refers to "March of 1999".