After the ancient Lich War, everyone died except Candle Jiuyin and Hou Di. After the goddess of mending heaven made man, Candle Jiuyin went to the northwest to be the protector, and Hou Di became the six divisions in the cycle of cause and effect. From the online novel "Buddha is the Tao".
The Master of the Twelve Ancestors is set in the online novel "Buddha is the Tao". There is no so-called granddaddy in Shan Hai Jing and even in all ancient books in China.
According to legend, Pangu split chaos with the banner of Pangu, collected fire and geomantic omen with Taiji, separated turbidity and dried Kun, and created the world, and endlessly evolved six divisions in the wheel of karma. Pangu was unable to support the power of creating the world. The Yuan God created the world in Sanqing (Taishang Laojun, Yuanshi Tianzun and Tian Tong). Most of Xue Jing became twelve ancestors, and a few of them circulated in the six divisions of the wheel of karma.
The Twelve Ancestors, also known as the Twelve Demons, were born with unparalleled flesh, devouring heaven and earth, manipulating feng shui and lightning, reclaiming land from the sea and moving mountains, and returning to the current. It is an indispensable part of the wilderness myth.
When the Twelve Ancestors get together to use the Twelve Gods and Demons array, Pangu's real body can be condensed, and there are few horses under Conan the Destroyer and Saint.
References:
Twelve ancestors-Baidu encyclopedia