The origin of Xiao Dong is the day before winter on the solstice.

Because winter is coming and the weather is not too cold, it is called "Little Winter" or "Little Arrival".

Winter solstice, commonly known as "Winter Festival", is a grand festival in ancient times. Among the 24 solar terms, the winter solstice is also the most important.

The ancients believed that by the solstice of winter, although it was still in the cold season, spring was not far away. Everyone who goes out at this time will go home for the winter vacation, which indicates that there will be a home at the end of the year. People in Fujian and Taiwan believe that the annual winter solstice is a festival for family reunion, because it is a day to worship ancestors. Going out and not coming home is a person who denies his ancestors.

The solstice in winter is the longest night in a year. Many people use this evening to make a "winter solstice circle" with glutinous rice flour. In order to distinguish it from "saying goodbye to the old and welcoming the new" on the eve of the Spring Festival, the day before the Winter Festival is called "adding the year" or "dividing the year", which means that the year is not over yet, but everyone has grown up for a year.