Why do you say "spring hits six or nine heads"?

"Spring strikes six or nine heads" is a proverb of straight people, which means that the day when spring begins is either the last day of May 9th or the first day of June 9th. The last day of May 9th in beginning of spring is called "Spring Day". On the first day of June 9th, beginning of spring was called "spring beating six or nine heads".

DaChun: DaChun, that is, beginning of spring. Sixty-nine: the first day of the sixth nine days after the winter solstice.

In ancient times, the period from winter solstice to winter solstice (about 365.25 days), that is, the tropical year, was usually divided into 24 segments (each segment was about 15: 05), that is, 24 solar terms. Because the interval between every two solar terms is about 15.2 days, and the three solar terms are 45.6 days (45 days 14 hours), the time of winter solstice determines the time in beginning of spring.

If the winter solstice time is before 10 in the morning of that day, it will be beginning of spring after 45 days; If the winter solstice is after 10 am, it will take 46 days for beginning of spring to become a genus.

There is also a saying that beginning of spring's time is not dead, but will change, so there is a phenomenon of "spring beating five Kyubi no Youko".

Yang guang will look up when he hits the sixth or ninth head in spring. This is the custom of "hitting spring cows", that is, on the day of spring, local farmers were encouraged to build cows.