In the deep mists of China's primeval past, long before the first dynasties were recorded on bamboo or bronze, the land was a tapestry of warring tribes and divine entities. The Central Plain was a fertile but chaotic cradle where the destiny of the Middle Kingdom would be forged in fire and blood. At the heart of this era stood Huangdi, the Yellow Emperor, a leader of immense wisdom and celestial favor, and Yandi, the Flame Emperor, whose people were masters of agriculture and fire. Together, they represented the hope of a unified civilization, yet their dominance was challenged by one of the most terrifying figures in all of mythology: Chiyou.
Chiyou was not a mere mortal but a being of monstrous proportions and terrifying power. He was the sovereign of the Nine Li tribes, a collection of eighty-one brothers who were said to have the bodies of beasts, bronze heads, and iron foreheads. They did not eat the grains of the earth like the followers of Yandi; instead, they consumed sand, stones, and hard minerals, which gave them their unnatural durability. Chiyou was credited with the invention of metal weaponry, forging the first swords, axes, and great spears that could pierce through the leather armor of the era. His ambition was as vast as the plains, and he sought to overthrow the established order of the Yanhuang alliance to claim the title of supreme ruler of the world.
The conflict began when Chiyou launched a brutal campaign against the Flame Emperor. Yandi’s tribes, despite their knowledge of the elements, could not withstand the metal-clad fury of the Nine Li. Driven from his ancestral lands, Yandi fled to the north to seek the aid of Huangdi. The Yellow Emperor, seeing that the peace of the world was at stake, agreed to lead a coalition of tribes against the encroaching darkness. This alliance, known as the Yanhuang union, gathered their forces at the plains of Zhuolu, a place that would become the stage for the greatest battle in the history of the ancient gods.
As the two massive armies converged, the very atmosphere of the earth began to change. Chiyou, realizing that Huangdi possessed superior tactical discipline, decided to employ the dark sorcery of the elements. He breathed out a thick, impenetrable fog that blanketed the entire valley of Zhuolu. For days, the soldiers of the Yellow Emperor wandered in total darkness, unable to distinguish friend from foe, their arrows flying blindly into the mist. It was a moment of absolute peril, as Chiyou’s bronze-headed warriors used the cover to launch devastating raids, picking off the Yanhuang soldiers one by one.
However, Huangdi was a master of invention and observation. Seeing his men lose their way, he collaborated with his advisors to create the Zhinan Che, or the South-Pointing Chariot. This was a mechanical marvel, a chariot with a figure on top that always pointed toward the south, regardless of how the carriage turned. It did not rely on magnets, which could be fooled by Chiyou's magic, but on a complex system of differential gears. With this technological miracle, Huangdi was able to guide his army through the magical fog, emerging from the darkness to strike at Chiyou’s main flank. The advantage of surprise was lost to Chiyou, and the battle escalated into a cosmic struggle.
Desperate to reclaim control, Chiyou called upon the gods of the winds and the rains. Feng Bo, the Earl of Wind, and Yu Shi, the Master of Rain, descended from the heavens at his request. They unleashed a catastrophic storm upon the plains of Zhuolu. Torrential rains turned the battlefield into a quagmire of mud where chariots could not move, and gale-force winds blew back the spears of the Yellow Emperor's men. It seemed as though the sky itself had turned against the Yanhuang alliance. But Huangdi was not without his own celestial allies. He summoned the Yinglong, the Resonant Dragon of the clouds, who possessed the power to store water and command the floods. The dragon soared above the battlefield, attempting to divert the rains and channel them against Chiyou’s camp. Yet, the combined power of Feng Bo and Yu Shi was too great, and even the mighty Yinglong was being overwhelmed by the endless deluge.