YGSYYG fengshui is short for Yang Gong San Yuen Yuen Gua Feng Shui (楊公三元元卦風水).
Yang Gong (楊公) is the most respectful way of calling Great Grand Master Yang Yunsong (楊筠松 834－906)
In the Feng Shui world, different Feng Shui schools, they all respect Yang Yunsong as the Grandfather of Feng Shui.
San Yuen (三元) is the trinity, Heaven, Earth and Man. How they are applied in Feng Shui.
Yuen Gua (元卦) means original, the original 24 mountains of Feng Shui techniques and teachings.
Yang Gong San Yuen Yuen Gua (SYYG) Feng Shui system (楊公三元元卦風水系統) is the fundamental
and the most important layer to all Feng Shui systems, such the Eight Mansions methods (八宅風水),
Flying Stars Feng Shui system (飛星風水), SanHe or Triple Harmony (三合風水) Feng Shui methods and
玄空大卦風水Xuán kōng dà guà Feng shui.
Great Grand Master, Yang Yunsong, he was an officer in late Tang Dynasty (618 – 907AD) and looked
after the Feng Shui matters for the royal family. Toward the end of the Tang Dynasty, there was a riot or
rebel by Huang Chao (黃巢). At that time, it was very unstable. Huang Chao (黃巢) riot was not the only
reason of Great Grand Master Yang had to leave Xian.
Great Grand Master Yang Yunsong, brought the Feng Shui books and left Chang’an, Capital of Tang
Dynasty (present-day Xi’an西安) and moved to Jiangxi. (江西).