1. Beginning of Winter, one of the twenty-four solar terms, the bucket handle points to the northwest, the sun's yellow longitude reaches 225°, and it intersects between November 7 and 8 in the Gregorian calendar. Beginning of Winter is a seasonal solar term, which means that winter has entered since then, which means that wind and rain, dryness and humidity, light, temperature, etc. are at the turning point and the climate begins to transition from autumn to winter. "Harvest in autumn and hide in winter", everything is hidden in winter. Winter is a season to enjoy the harvest and recuperate. The beginning of winter is one of the "Four Seasons and Eight Festivals" among the people. In ancient times, some places in my country would hold sacrifices, banquets and other activities at the beginning of winter to celebrate as an important festival.

2. Li means the beginning of construction; winter means the end and the collection of all things. In winter, when Yang retreats and Yin emerges, vitality accumulates and everything begins to collect. Traditionally, the "beginning of winter" is the beginning of winter. The drier and dry climate in autumn gradually passes, and the transition to rainy and cold winter climate begins. After the beginning of winter, the daylight hours will continue to shorten, and the height of the sun at noon will continue to decrease. Since the heat stored on the surface of the earth still has a certain amount of energy, the temperature generally drops gradually during the early winter (Mengdong) period, but it is not very cold yet; as time goes by, strong cold The air moves southward frequently and crosses the Nanling Mountains, making the weather increasingly cold. In northern areas, it is already very cold before the beginning of winter.