Yang Gongri, Hongsha Day, Mafia Day, Four Days of Absurdity, Peng Zuri.

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 the 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.

-"Thirteen Taboos of Yang Gong" has been valued by the Kong Xuan family since ancient times. In the eyes of Kong Xuan's family, these thirteen days must not be chosen as the days of opening, building, getting married and signing contracts.