What does this sentence mean, "I can't pass the fifteenth, but I can't be angry with the first grade"? Does the old rural saying make sense?

"Festival" and "Qi" here refer to the twenty-four solar terms. A careful study of the twenty-four solar terms will reveal that the 12 section in the twenty-four solar terms will not exceed the fifteenth day of the lunar calendar, generally from the first day, the second day, the third day, the fourth day, the fifth day to the tenth day.

Similarly, the 12 gas in the 24 solar terms will not exceed the first day, generally from 16, 17, 18, 19, etc. until the second half of the 26th and 27th, and basically will not reach the first day of the month.

This is the twenty-four solar terms formulated by the ancients, which is very helpful to the planting industry at that time. In a solar term, the farmer's uncle knows what to do, what seeds to sow or what plants to harvest.

In fact, up to now, we are still using the 24 solar terms, and people are paying more and more attention to it. Because it carries the wisdom and efforts of the older generation.

Under normal circumstances, according to the saying that "the festival does not exceed fifteen, and the qi does not exceed the first day", "festival" and "qi" are correct, but there will be a leap year every four years. In leap years, this sentence may be a bit wrong.

Because in leap years, there will be a month that appears twice, such as leap May and leap June. So the time of solar terms will also be affected to some extent. In addition to this situation, this sentence is very accurate for the 24 solar terms.

Later, some people joined their own etiquette, thinking that many festivals did not exceed the fifteenth day of the lunar calendar, or they were furious on the first day of the lunar calendar. This is actually the understanding of future generations themselves, not the original meaning of this proverb. But the understanding of future generations, if you think about it carefully, also has some truth.