The Ancient Yin River Dao extends through Dayong, spreading to the four corners of the world, with entrances scattered across the sixteen prefectures of Dayong.
According to the Eight Banner Marshals, there are twelve sacred beings guarding the Ancient Yin River Dao, collectively known as the twelve gatekeepers.
The entrance in the Capital City and Jin Sect area is under the jurisdiction of the gatekeeper 'Ghost Law'.
The Capital City is where the dragon of the nation's destiny resides, gathering the spirit of the nation. After the founding emperor discovered an entrance to the Yin River in the capital, he modified the river courses, excavating a second canal connecting the capital to Jin Sect, and laid a stone foundation on the old riverbed for use by Dayong's emperors for rituals to heaven and earth.