Sanyang Kaitai, specifically refers to the day of the beginning of spring. Tai is a great realm of stability and peace, and the eleventh hexagram of "Yi" is

"Thai hexagram", like yin and yang, resignation

"Small to big", meaning to break free from shackles and predicaments, showing a vibrant appearance.

"Break through the rigidity of the 'device' and achieve the vitality of life." According to the calculation method of the old calendar, a yang starts from the day of the winter solstice of a year, and the yang energy rises from the center of the earth to the ground, which is said in the Book of Changes: "On the day of the winter solstice, the ninth day of the first month of yang energy, is the center of heaven and earth." The beginning of all things, the first of good and evil, so it is said to 'see the heart of heaven and earth'. Later generations also have corresponding verses: "Where the sun first moves, when all things are not born." ”

"Today's winter solstice has been reported. "Eryang is between the small cold and the big cold, and is in the halfway stage.

In the beginning of spring, around the 4th of February every year, the yang energy finally breaks through the surface and covers the earth again after about a month and a half of slow travel.

We have a lot of land in China, there are six kinds of old calendars before, the Yellow Emperor calendar, the Zhuan calendar, the summer calendar, the Yin calendar, the Zhou calendar, the Lu calendar, and the Xia, Yin, and Wednesday calendars are used a lot.

The biggest difference between these three calendars is the setting of the beginning of the year. The Zhou calendar begins the year with the month in which the winter solstice is located (i.e., today's lunar eleventh) and begins with the beginning of the first yang.

The first month of the Yin calendar is the wax moon of today's lunar calendar. La is the name of the sacrifice, and in this month, there are too many gods of heaven and earth to sacrifice.

The beginning of the summer calendar is the first month of our lunar calendar today. When reading ancient books, when it comes to the months, today's habits often encounter incomprehensible places, the reason is not that the climate changes greatly in ancient and modern times, but that the calendars based on the authors are different, typical is the "Book of Songs", such as the ballad "July", which is used in the summer calendar and the Zhou calendar;

The Qin State and even the Qin Dynasty did three great cultural works. One is to unify weights and measures,

"The car is on the same track". And then the writing of the unified text,

"Book with the same text". The third is to unify the calendar. The Qin Dynasty promulgated the "Zhuan Calendar", and the first month of each year was the month before the winter solstice, that is, the tenth lunar month.

The first month of the year is not called the first month, but the end month. At the beginning of the Han Dynasty, the Qin system was still attacked, and by the time of Emperor Wu of the Han Dynasty, the "Taichu Calendar" was promulgated, and the beginning of the year was determined to be the first month of the lunar calendar.

Our current calendar has been developed over and over many dynasties. The great thing about these three pieces of work is that they set national standards, and it is truly terrible to be a big country without its own standards.

We are now the second in the world in terms of economy, but this ranking standard is people's, not only that, finance, environment, education and even literature, too many industry standards are obeying people's orders, which is really worth thinking about again.

Qin Shi Huang's original intention of burning books and pit Confucianism was

"Walking in the same way", he did a very bad job in this matter. Not only dictatorship, but also autocracy. It is said in the Book of Rites

"The car is on the same track, the book is the same, and the line is the same", Daqin did two things well, and one thing was messed up. Besides,

"Doing the same" is not to unify people's ideology, but to follow a big standard in people's behavior.

Can consciousness be unified? Even if paper wraps up water and fire, it won't last long. This year's Spring Festival seven-day holiday, the terracotta warriors and horses inside and outside as always like tourists, ticket income is extremely considerable, the first emperor reserved a thick passbook for the descendants of Shaanxi.