Sanjiutian is one of the traditional Chinese solar terms, which usually occurs during the coldest period of winter. Starting from the winter solstice, every nine days is 19, and the count is until the end of 99, a total of 81 days. Among them, the nineteenth to twenty-seventh days after the winter solstice are called "39 days", which is the coldest time of the year.
At this time, the temperature plummets, often reaching minus Celsius or even lower. Snow and freezing weather are also common in the northern regions. People need to take precautions to keep warm and wear heavy winter clothes to keep out the cold.
During the three-nine days, there will also be some changes in people's living habits and activities. Due to the cold weather, people are more inclined to stay at home and enjoy a warm family life. In terms of diet, people will choose some high-calorie foods to supplement the energy needed by the body, such as hot pot, mutton, chicken, etc. At the same time, people will also drink some hot beverages such as hot tea, hot coffee, etc. to keep warm.
In addition, during the three-nine day, some traditional health care methods are also favored by people. For example, foot soaking is a common health care method that can help improve blood circulation and warm the body. In addition, some people will choose to do winter swimming or outdoor sports during the three-nine days to enhance their physical fitness and immunity.
In short, Sanjiu is one of the coldest periods of winter, and people need to take warm measures and adjust their living habits to cope with the cold weather. At the same time, it is also a time suitable for enjoying family life and traditional methods of health care. Through reasonable diet and exercise, as well as the use of warm equipment and other measures, it can effectively alleviate the discomfort caused by 39 days.