February 4th is the "beginning of spring" solar term.

February 4th (Sunday) is the "beginning of spring" among the 24 solar terms, and beginning of spring is the first solar term in a year, with the longitude of the sun of 3 15 degrees. In China, beginning of spring is the beginning of spring. In ancient times, people regarded the beginning of spring as the Spring Festival and held Spring Festival ceremonies on this day. Beginning of spring solar terms began, westerly jet, the southern branch of East Asia, began to weaken, and the winter climate was coming to an end. However, the strength and location of the northern branch westerly jet remain basically unchanged. Mongolia cold high and Aleutian low are still relatively strong, and gale cooling is still the main weather prevailing in Jianghuai area. However, during the gap period affected by strong cold air. The frequency of southerly wind increases, accompanied by obvious warming process. Beginning of spring solar terms are also very popular among farmers, because they bring warmth and hope to people. Therefore, there are many weather proverbs about beginning of spring. For example, based on sunny days and no rain, there are "sunny days in beginning of spring, even if it rains" and "sunny days in beginning of spring, sunny days in spring". Based on rain and snow, there are "spring rains, rainy and wet, until sunny" and "Chun Xue raining and raining for a hundred days"; Based on thunder and lightning, there are "thunder represents the Spring Festival, and it never stops raining" and "spring thunder begins, and the sky is not seen in January". Based on the cold and warm, there is "cold in beginning of spring, warm in spring"; Based on the wind, there are "rainy north wind in beginning of spring", "early recovery of east wind in beginning of spring and late recovery of west wind in beginning of spring" and so on. Beginning of spring solar terms should prevent the cold wave, low temperature, rain and snow from affecting the rush work in Spring Festival travel rush, and rural areas should pay close attention to burying the overwintering crops in the fields, scarifying the soil, topdressing green manure, preventing freezing and protecting seedlings.