Yang Gong's death schedule in 2022.

List of taboo days in Yang Gong: 13th of January, 11th of February, 9th of March, 7th of April, 5th of May, 3rd of June, 1st of July, 29th of July, 27th of August, 25th of September, 23rd of October, 21st of November and 19th of December. According to folk elders, the "Yanggongbi" on the 13th day of the first month is the fiercest, most vicious and poisonous day of the year.

"Yang Gong's Forbidden Day", also known as "Thirteen Forbidden Days in Yang Gong", is a legend that has spread all over the world and was formulated by Yang Junsong, a geomantic master in the Tang Dynasty. This ancient custom began on the 13th day of the first lunar month, and then it is called "Yang Gong Taboo Day" two days in advance every month, also known as "Yang Gong Thirteen Taboos", which is a Pepsi Taboo Day. In the folk, most people know that on the thirteenth day of the first month, they don't work or travel. In fact, it is mainly to commemorate Yang Gong, that is, Yang Jiye the Golden Knife.