The fifth day of the fifth lunar month is the Dragon Boat Festival. Some people say that this day is the anniversary of Yang Gong's death, and people born on the anniversary of Yang Gong's death don't deserve Pepsi. What is the basis of this statement?

The anniversary of Yang Gong's death, also known as "Thirteen Taboos in Yang Gong", was handed down by Yang Junsong, a geomantic master in Tang Dynasty. These thirteen "taboo days" are 1 month 13, February 1 day, March 9, April 7, May 5, June 3, July1day, July 29, and July 29. These thirteen "forbidden days" are not suitable for everything.