Why is there such a saying as "being absent for four days"?

Through the study of nature and celestial bodies, the ancient working people divided a year into 24 solar terms. The Four Musts refer to "beginning of spring, Changxia, beginning of autumn and beginning of winter" the day before. It is mainly a time node that reminds us to follow the laws of nature in our daily life.

The Yumen Sutra says, "Four Days of Absence is the day before the establishment of the Four Kingdoms." There are four unique days in a year. These days belong to the alternation of solar terms, and the magnetic field and radio waves in the earth's orbit will naturally vibrate, affecting airflow, clouds and weather changes. Before the solar term, the airflow changes quickly, saying that the gas is strong, and after the solar term, the airflow changes slowly, saying that the gas is weak. Therefore, at this time, people should follow the heaven, and it is best to avoid important activities such as opening and getting married these days.

In fact, beginning of spring is prosperous in water, long summer is prosperous in wood, beginning of autumn is prosperous in soil, and beginning of winter is prosperous in water. If you choose to start work, start a business, get married, form an alliance and other important activities in these days, it may cause weather changes and affect your mood, so try to avoid them.