After the defeat of Emperor Yan, his grandson Xuanyu also began to defy the yellow emperor's administration and wanted to compete for the throne.
The head of a humanoid bull with pointed horns and four eyes, six arms and two hooves. He had eighty-one brothers, all fierce beasts who could speak human words; he had nine sons, all warriors; and the soldiers of his tribe were all strong and good at fighting. Nearby tribes also submitted to the control of Xuanyu.

Xuan You found a copper mine at the foot of Lushan Mountain, and smelted the copper in the copper mine into swords, spears, halberds, shields and other weapons, and equipped a good army. He also united the three departments of Feng Bo, Yu Shi, and Quao Father, and challenged the Yellow Emperor in the name of Emperor Yan's revenge and hatred.
The Yellow Emperor was born to love the people and was a benevolent monarch. He had been persuading Xuanyu to make a truce and let the people live and work in peace. However, the stubborn Xuanyu did not heed the advice at all, and repeatedly challenged him. The Yellow Emperor had no choice but to send troops to recruit Xuan You. The two armies met at Zhuolu. The weapons of the Xuanyu soldiers were indeed advanced. At first, the Yellow Emperor was defeated. The Yellow Emperor hurriedly invited Ying Long.
Ying Long was a general under the Yellow Emperor, and he could fly freely in the air and spray water in his mouth. The Yellow Emperor sent Ying Long to fight. Ying Long rose in the air, opened his mouth, and squirted water into the condescending Array of Dragons. Suddenly, the waves went straight to Xuanyu. Seeing that the situation was not good, Xuan Yu immediately ordered Feng Bo and The Rain Division to fight. The wind blew a strong wind against the water; the rain master collected all the water spewed by Ying Long, and the two of them cast a spell to blow the storm to the Yellow Emperor's camp again. Ying Long's skill is to spray water, but does not have the ability to collect water. As a result, the Yellow Emperor's army was defeated again.
After the Yellow Emperor returned, he stepped up the study of tactics, formulated detailed countermeasures, reorganized the army, and faced Xuan You again. This time, the Yellow Emperor personally took the lead and rushed into the Xuanyou formation. Like the Yellow Emperor, Xuan You can cast many spells. He opened his mouth wide and spewed smoke at the Yellow Emperor's army. The smoke covered the sky and lasted for three days and three nights, and did not dissipate. The Yellow Emperor's army could not see the direction clearly in the thick smoke, could not see the enemy, and was trapped in the thick smoke. The battle has reached a time of life and death. The Yellow Emperor suddenly looked up, saw the Big Dipper seven stars in the sky, and cleverly invented the guide car, leading the army out of the predicament.
Later, the Yellow Emperor and Xuan You successively launched the Seventy-First War, but the Yellow Emperor's army was losing more and more, and the Yellow Emperor was worried about this. One day, the Yellow Emperor fell asleep unconsciously, dreaming that the Nine Heavenly Xuan Daughters gave him a war book, the Yin Rune Classic. When the Yellow Emperor woke up, he found himself holding the battle book in his hand. He opened it and studied it carefully. According to the formation of the battle book, guide his soldiers to conduct drills. After mastering the formation, he led his troops to engage Xuanyu.
At that time, there was a Liubo Mountain in the East China Sea. On the hill lives a monster called 夔. It looks like a cow with a pale body but no horns on its head. It has only one foot. Wild storms, light like the sun and moon, sound like thunder. In order to boost morale, the Yellow Emperor sent people to capture the hammer, peel off its skin to make a drum face, and the Yellow Emperor also sent people to make drumsticks from its bones. This snare drum can shock 500 miles with one blow, and 3,800 miles with another blow.
The Yellow Emperor had a daughter named Lu, known as the God of Drought. Her appearance was terrible, and it was said that her eyes were on the top of her head, her hair was covered with small snakes, her body was covered with white hair, and everywhere she went, where not even a drop of rain could fall, people would tremble when they heard her name. She has the ability to collect rain. Therefore, in order to completely defeat Xuan You, the Yellow Emperor specially summoned his daughter who was far away in Kunlun Mountain to help.
The Yellow Emperor set up eighty-one snares, set up a position, and once again confronted Xuan You. The drum made an earth-shattering noise, which made the soldiers on the Yellow Emperor's side bolder, while the soldiers on Xuan You's side were terrified. Desperate when they heard the drums. Seeing this, he hurriedly led eighty-one fierce brothers into battle, each showing his might. The two armies fought side by side, but the battle was dizzy, the earthquake was shaking, and it was inseparable.
The Yellow Emperor saw that the battle was difficult to harvest for a while, and the Xuan You army was really difficult to deal with, so he took advantage of the fact that the Xuan You army was too late to let Ying Long go into battle. Spray water. Unsuspecting, xuanyu's army was overturned from top to bottom by the mighty waves of the river. XuanYu hurriedly urged Feng Bo and The Rain Master to come and help.
At this time, The Fish also quietly entered the battle, only to see her begin to use her magic powers. Suddenly, every pore on her body was emitting a rolling heat wave. Everywhere she went, the wind and waves were calm and the sun was shining. The water disappeared and the mud dried up. The spells of the Wind And Rain Master could no longer be cast, and they fled in panic. The Yellow Emperor took the opportunity to lead his army to pursue, and Xuan You's army collapsed, and Xuan You was later killed on the battlefield.
After the Yellow Emperor defeated Xuan You, he was revered by the princes as the Heavenly Emperor, which is what we often call the Yellow Emperor of Xuanyuan. He led the people and laid the foundation of the Chinese nation.