What is the origin of Xiaohan? Why is it called Lesser Cold instead of Greater Cold?

What is the origin of Xiaohan? Why is it called Lesser Cold instead of Greater Cold?
Xiaohan has appeared as a solar term in Chinese history for a very long time. What is the origin of Xiaohan? Why is this day called Lesser Cold instead of Greater Cold? Winter months are cold, but when everything goes well, they are the warmest days. The Fortune Teller website gives you the lunar calendar for November so that you can have an idea of ​​what to do.

What is the origin of Xiaohan?

Lesser Cold, like Greater Cold, Lesser Heat, Greater Heat and End of Heat, is a solar term that indicates changes in temperature. "Collected Explanations of the 72 Seasonal Changes" says "At the beginning of the month, the cold is still light...in the middle of the month, it is severe", which means that in the Yellow River Basin, the Great Cold was colder than the Lesser Cold at that time. And because Minor Cold is in the last few days of "Erjiu", it enters "Sanjiu" a few days after Minor Cold, and the Minor Cold in winter corresponds to the Minor Heat in summer, so it is called Minor Cold. The Great Cold, which comes after the Lesser Cold, is also very cold during the "four nine days of cold" when "sleeping at night is like sleeping outside", and the Great Cold in winter corresponds to the Great Heat in summer, so it is called the Great Cold.
The characteristic of Minor Cold is that the weather is gradually getting colder, but it is not yet extremely cold. The "Three Nines" of midwinter are basically within this solar term, so there is a saying that "Minor Cold is better than Major Cold". This is because during the previous winter solstice, the ground surface receives the least sunlight and heat, but there is still heat supplement from deep in the soil, so it is not the coldest time of the year. After the winter solstice, which is around the "Three Nines", the heat deep in the soil is also consumed. Although the amount of sunlight and heat increases slightly, it is still not enough, so the lowest temperature of the year appears.

Why is it called Lesser Cold instead of Greater Cold?

This is because the solar terms originated in the Yellow River Basin. "Collected Explanations of the 72 Seasonal Changes" says "At the beginning of the month, the cold is still light...in the middle of the month, it is severe", which means that in the Yellow River Basin, the Great Cold was colder than the Lesser Cold at that time. And because Minor Cold is in the last few days of "Erjiu", it enters "Sanjiu" a few days after Minor Cold, and the Minor Cold in winter corresponds to the Minor Heat in summer, so it is called Minor Cold. The Great Cold, which comes after the Lesser Cold, is very cold during the "four nine days of cold" when "sleeping at night is like sleeping outside", and the Great Cold in winter corresponds to the Great Heat in summer, so it is called the Great Cold.

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