Which day of the month is Yang Gong Day and which day is Yang Gong Day?

1. The Forbidden Day in Yang Gong, also known as the Thirteen Forbidden Days in Yang Gong, was handed down by Yang Junsong, a geomantic master in the Tang Dynasty.

The thirteen "taboo days" are February, March, April, May, June, July, August, September, October, November and December.

3. Yang Gong's main works: Geomantic omen theory works: According to The Instructions for the Son of Man, he wrote the following works: Yi Long Jing, Han Long Jing, Hua Jia Tu, Four Divisions, Li Zui Fu, Sha Tu, Fetal Abdominal Jing, Wang Long Jing, and The Method of Inverting Staff.

4. According to the Records of Si Series (IX), Yang Gong wrote five books: Yilong Jing, Hanlong Jing, Burying with an Inverted Staff, Qingnangao Yu and Tian Yu Jing.

5. There are many records about Yang Gong's geomantic theory works in other geomantic books.

6. According to textual research, Yang Junsong's works are the most reliable, including at least three books: Qingnangao Yu, Tianyu Jing and Yuchi Jing.