What's the difference between going back and forth in beginning of winter?

There is a folk proverb: when cold dew comes to early winter, insects freeze to death. Beginning of winter is a solar term that reflects seasonal changes. In the eyes of the ancients, the weather change on this day indicates the weather throughout the winter and even in the early spring of next year. China was an agricultural society in ancient times, and people paid more attention to weather changes to serve agriculture. To this day, many proverbs are still instructive. "beginning of winter plowed gold before, beginning of winter plowed silver after, and beginning of spring plowed iron after"; "Cold dew to beginning of winter, turned to freeze to death. This proverb is very important, which means that if there are few pests in the coming year, beginning of winter should shovel all the grass at the edge of the field and plow the field in time, so that the pests and diseases can freeze to death in the cold winter climate and ensure a bumper harvest in the coming year. Therefore, winter begins to get better.