Since the founding of the world by Pangu, the three realms of humans, immortals and demons have suddenly appeared. There is another space at the junction of the three realms - the Holy World, whose full name is the Holy Summit Continent.
The supreme commander of the Holy Ding Continent is the Holy Ding Emperor, known as the Holy Emperor.
The fourth wife of the Holy Emperor, Yunmu Zhenji, gave birth to twin daughters, sister Yuhua and sister Triphe. Two sisters were born together, with a tripod-shaped birthmark on their foreheads. They were originally one body, but because the twins were separated, the birthmark also split into two.
When Yuyao Tiehe was 14 years old, the Three Realms were in chaos. The Holy Realm that relied on the Three Realms collapsed due to the time track, and a loophole appeared, and Yuyao Tiehe fell into the human world.