The homophony of "Hou" and "Ao" in Fuqing dialect. Fuqing people believe that every "Nine" is not smooth, and on this day every year, people who are nine or multiples of nine have to pass the "Nine". From then on, no matter whether people are 29 years old or 29 years old in the first month, it can be regarded as a year when Manglietia's mother was in trouble.
Therefore, Fuqing people feel guilty every nine days and think that "9" is a year of adversity. So people who are 9 years old, such as 9 years old, 19 years old, 29 years old (called "Ming Jiu"), or multiples of 9, such as 18 years old, 27 years old and 36 years old (called "Dark Jiu"), should also be like.