The Counting of the Nine Songs Help! ~~~ What does this proverb let us know!

The first nine and the second nine are so cold that you don't dare to show your hands; the third nine and the fourth nine are even colder, and the ice is so thick that you can walk on it; the fifth nine and the sixth nine are beginning to warm up, and the willows in the distance have already appeared to be in spring color; the river ice in the seventh nine is beginning to melt gradually; the geese in the south of the eighth nine are flying back to herald the warmer and warmer weather; and the plowing in the spring is beginning after the ninth nine and the ploughing oxen have begun to plough the fields.

From the day of the winter solstice, China has entered the nine cold days. The "Nine Days" is a kind of miscellaneous festival that is more applicable in the north of China, especially in the middle and lower reaches of the Yellow River. It counts from the day of the winter solstice, into the "counting nine", commonly known as "cross nine", and then every nine days as a unit, known as "nine", after the nine "nine", just eighty-one days, that is, "out of nine", then the spring flowers.

The widely circulated folk winter solstice "nine nine cold song", commonly known as "nine nine song", vividly recorded the winter solstice to the next year between the equinoxes of the climate, climate change, but also expressed some of the laws of agricultural activities.