In the early Yuan Dynasty of the Great Wilderness, Nuwa practiced Taoism and ascended to immortality, leaving behind three volumes of heavenly books on immortality, medical classics, and demon subjugation.
Before Nuwa ascended to the throne, in order to consolidate the fertile land under her jurisdiction, she asked Huang Emperor, Yan Emperor, and Chi You to hold a volume each of immortality, medical classics, and demon subduing, and they would practice them individually.
Unexpectedly, after Nuwa ascended to heaven, Chiyou became obsessed with learning the Heavenly Book to subjugate demons. He became greedy and wanted to seize the two volumes of Heavenly Book from the hands of Emperor Yan and Huangdi, imitate Nuwa's ascension, and become a long-lasting immortal.
So Chi You sent troops to invade Jiangnan. Emperor Yan hurriedly responded to the battle, but was defeated by Chi You, and the territory south of the Yangtze River where he was located was occupied by Chi You. Emperor Yan had no choice but to lead his tribe and flee in a hurry with medical records.
Unexpectedly, on the way to escape, Chi You's spies were mixed into the clan. The spies stole half a volume of medical classics from Emperor Yan while he was sleeping.
Because Chi You's army was approaching, Emperor Yan could not take care of the half volume of medical records, so he had to continue to lead his tribe to defect to the Yellow Emperor's tribe.
Subsequently, Chi You sent his army straight into the Central Plains.
Faced with Chi You's invasion, Huang Di and Yan Di joined forces to resist, and a bloody battle was about to break out!
After several battles, the armies of Emperor Yan and Huang and Chi You finally fought in Zhulu. With the help of Jiutian Xuannv, Huangdi and Yandi joined forces with the master of Qingfeng Pavilion, Yu Qingzi, and the master of Sanqing Temple, Taoist Master Mingxu, to kill Chi You.
After Chi You's death, his remnants desperately took his soul and fled into the wilderness - Beishuo, a land in the far north, seeking a way to resurrect him.
A hundred years later, the Yellow Emperor passed to the throne, and together with Yu Qingzi of Qingfeng Pavilion and Taoist Master Mingxu of Sanqing Temple, the three of them discussed Taoism with Yizi in Wuwo Mountain and became immortals.
In the following years, Beishuo was unified by a mysterious demon, known as the "King of Beishuo". He stationed tens of thousands of demon soldiers in Beishuo and repeatedly invaded the wilderness.
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