The world's number one Alchemy Emperor was reborn two thousand years later after being assassinated. As the Human Emperor, he was unwilling to protect the human world due to grudges from his previous life, causing his shadow to separate from his body and form a lineage of his own, becoming the Underworld Emperor Shadow Qing.
Due to a strange mistake between the two, in the end the Emperor of Man held the Sword of the Underworld, and the Emperor of Hades held the Sword of the Emperor of the Underworld, and the two directly started a war between the human and the underworld.
The Human Emperor kills the shadows and becomes one again; the Underworld Emperor worships the Lord, and there is no longer a human world.
