What are the constellations on both sides of Sanjiu, and what are the constellations on both sides of Sanjiu?

The three-ninth opening on both sides refers to the last nine days and the first nine days of winter, that is, the last nine days of December and the first nine days of the first lunar month. This custom originates from the twenty-four solar terms in China traditional culture and is also related to farmers' living habits. It doesn't belong to any specific zodiac sign, because in the China lunar calendar, every zodiac sign experiences two sides. However, according to tradition, people belonging to dragons, chickens and monkeys are more likely to get sick or suffer misfortune around March 9. Therefore, special attention should be paid to health and safety during this period.