Jiaozi, Tangyuan and Red Bean Glutinous Rice: Most southerners will eat jiaozi on the winter solstice, and among the people, it is said that they are one year older than Tangyuan, so a large part of southerners are popular to eat Tangyuan on the winter solstice, which can be used to worship their ancestors or give to each other's friends. Even in a few places in the south, there is a custom of eating Red Bean Glutinous Rice on the winter solstice.
The winter solstice, also known as the southern solstice, winter festival, sub-year-old, etc., has both natural and humanistic connotations. It is not only an important solar term among the 24 solar terms, but also a traditional festival of ancestor worship in China. The winter solstice is one of the four seasons and eight festivals, and it is regarded as a big holiday in winter. In ancient times, there was a saying that the winter solstice was as big as a year. The customs of the winter solstice differed in content or details due to different regions. In southern China, there were differences in customs.
Astronomical calendar
The winter solstice, as an important node of the twenty-four solar terms in China, is the shortest day and the longest night in the northern part of the earth's equator. The winter solstice is the extreme of the sun's southbound journey. On this day, the sun's height in the northern hemisphere is the smallest, and the sun is the most inclined to the northern hemisphere. The winter solstice is the turning point of the sun's southbound journey. After this day, it will take a "turning back" and the direct point of the sun will start from the tropic of Capricorn (23.
Around the winter solstice, the earth is located near the perihelion, and its running speed is slightly faster, which causes the time for the sun to shine directly in the southern hemisphere in a year to be about 8 days shorter than that in the northern hemisphere, so the winter in the northern hemisphere is slightly shorter than that in summer.