According to legend, this day is called "Red Dog Day", and the red dog represents the god of anger, which is unlucky to encounter. The word "red" in red dog also means "poor". If you go out, you will meet a red dog, which will easily lead to quarrels and discord between people, or cause other unnecessary losses or some unnecessary injuries. Therefore, it is too difficult to stay at home as much as possible on the third day of the New Year, which means that everything will be smooth in the coming year.
According to folk custom, it is suggested not to pay New Year's greetings on New Year's Eve. As mentioned above, the third day of the Lunar New Year is "Red Dog Day", and it is easy to encounter bad things when going out. Although these are old sayings, most people are still willing to believe that sometimes people also want peace and health, and hope that the weather will be good and everything will be smooth in the coming year. In the impression of most people, pigs are round, chubby and silly. They sleep after eating and eat after waking up, so people often use pigs as a metaphor for lazy people. But in the traditional culture of China, pigs still have many beautiful meanings and symbols. According to legend, since the Tang Dynasty, court examinations met with his Jinshi. If one of them became a general, calligraphers of the same clan would be asked to write an inscription on the Big Wild Goose Pagoda with "Zhu Shu", that is, a red pen. Because "pig" is homophonic with "Zhu" and "hoof" is homophonic with "topic", the pig became the mascot of ancient student to be. Solemnly declare: the answer is for reference only, please don't be blindly superstitious.