Later, Cao Cao unified the north, divided the soldiers of Huchuquan into five divisions, appointed Liu Bao as the left commander, and the rest of the commanders were also served by the surname Liu.

In the blink of an eye, the Jin Dynasty Wei, the Taikang period changed the old system, set up the Duwei, the Xiongnu departments, the left lived in Taiyuan's Zishi, the right lived in Qidi, the south lived in Puzi, the north lived in Xinxing, and the central part lived in Daling, which was passed to Liu Yuan's generation.

According to historical records, Liu Yuan loved to study since he was a child, worshiped the party member Cui You as his teacher, and studied "Mao's Poems", "Jing's Yi" and "Ma's Shangshu", and he especially loved the two books of "Spring and Autumn Zuo's Biography" and "Sun Wu's Art of War", which can be read in general, and "Historical Records", "Han Shu" and the works of Zhuzi, there is no one who does not read.

Liu Yuan once said to his classmates Zhu Ji and Fan Long, who studied together: "Every time I read a book, I often can't help but despise Sui He and Lu Jia's lack of martial arts, and Zhou Bo and Guan Ying's lack of literary talent. The Tao is carried forward by people, and if you don't understand one aspect of knowledge, you will be despised by a gentleman. Sui He and Lu Jia met Han Gaozu and were unable to establish the feudal, and Zhou Bo and Guan Ying followed Emperor Wen of Han and could not create the great cause of education, it's a pity!"

So Liu Yuan began to learn martial arts knowledge and skills, he was very smart, his posture and appearance were burly, he was eight feet four inches tall, his beard was more than three feet long, he learned martial arts quickly, his arms were long and good at archery, and his physical strength exceeded that of ordinary people.

After the death of Liu Yuan's father, Liu Bao, the commander of the left department, the court of the Western Jin Dynasty appointed Liu Yuan as the acting commander of the left department, and later appointed him as the governor of the northern region.

During Liu Yuan's tenure, strict criminal law, prohibiting all kinds of treacherous and evil acts, he did not value property, loved charity, intersected with others, and met with sincerity, attracting a large number of talents to join his command, not only the heroes of the five Xiongnu departments, even the well-known Confucian students in Youzhou and Jizhou, and the outstanding people in the post-study, traveled here thousands of miles away, because of the recruitment of all kinds of talents, Liu Yuan's reputation was fully revealed.

In the first year of Yongxi, Sima Ying, the king of Chengdu, guarded Yecheng, in order to develop his own strength, he abandoned the Xiongnu people to win over the Xiongnu Department, and recommended Liu Yuan as the general of Ning Shuo and the military of the five departments, and the two also worshiped as brothers in private.

Liu Yuan showed gratitude, secretly loyal to Sima Ying, threw himself into Sima Ying's arms, and became a secret force in Sima Ying's hands.

Liu Yuan held the five forces of the Xiongnu, so he was naturally the key target, and Liu Yuan was not ambiguous, and immediately threw himself into the arms of Sima Yue.

Sima Yue was elated, thinking that he had received a loyal hound, but he did not know that it was a crouching tiger.

After Sima Yue annexed Sima Lun's forces and raised troops, Sima Yue also received a secret letter from Jia Nanfeng, inviting him to go south, Sima Yue was instigated by the strategists, and felt that his opportunity had come, so he took his own men and horses and a part of the Xiongnu elite cavalry, and went south to Luoyang, although he lost the battle of Luoyang, but he still coerced the current emperor Sima Zhen to evacuate safely.

Liu Yuan guarded the rear of the state and state, and after receiving Sima Yue's request for help, he realized that this was a good time to leave the mountains and enter the Central Plains, so he took his headquarters and galloped to help day and night, and caught up with this big battle.

"Dog, surrender, I only need the officer's life, and all the soldiers will be reduced to slaves, so that many people can live, and leave a little seed for you people. ”

Liu Yuan looked at the remnants of the Qianren who were surrounded by groups, and was triumphant.

"In a dream, the karma would rather die standing than live on their knees. ”

Shi Le let out a long howl, brandishing his long sword to take the lead in the charge, Liu Yuan waved his hand, and the rain of arrows that covered the sky and the sun was sprinkled on the cavalry......

In the first battle of Bingzhou, the main force of the cavalry of the Shile tribe, the king of the East China Sea, was almost wiped out, only the peach leopard broke through with dozens of people desperately and rescued Shi Le, and the group escorted Shi Le back to Yecheng.

Liu Yuan took the opportunity to expand his troops, controlled the various passes in Bingzhou, attacked and retreated, and then sent troops to attack Yecheng.

At this time, Yecheng, although the city was deep and thick, but the main force was taken away by Sima Shu, and it was unable to defend at all, and it was broken after only one day, and the land of Hebei was fully entered into its hands, and Liu Yuan became the largest force in the north.

Shi Le fled north with tens of thousands of elites temporarily collected from the remaining clans and escaped into the vast grassland.

On the other side, although the king of the East China Sea was saved, he also suffered heavy losses under the siege of Shi Le, and originally wanted to use Liu Yuan's power to regroup, but he didn't want Liu Yuan to oppose the guest, and bribed or executed his generals, and slowly he was also hollowed out.

After the city of Luoyang was broken, the remnants of the King of Qi in the city, under the leadership of Murong Hao, also withdrew from Luoyang, passed through the state, passed through the town, and returned to the fiefdom of Qi, supporting Sima Chao, the son of Sima Yi, as the new King of Qi.

After the king of Changsha and the king of Chengdu were defeated by Shile, they planned to retreat to Shuzhong, but found that their homes had been stolen.

It turned out that the natural disasters in Shu land for many years, the Jin court disaster relief was not effective, the leader of the Bayi tribe of Yizhou Shu County, Li Te, led the refugees to raise troops, at first it was just a small fight, accumulating strength, and so on until the king of Chengdu left the fiefdom to go to Luoyang, took the opportunity Li Teh to send troops, marched lightly, sneak attack Chengdu, captured in one fell swoop, proclaimed himself the king of Chengdu, and also won Guanghan, Hanzhong, Langzhong, and the fiefdom of the king of Hejian formed a state of opposition, Sima Jia's Chengdu king and the queen of Hejian Road were cut off, can only lead the headquarters of 100,000 horses, occupy Chang'an, and Sima Shu's Luoyang confrontation with each other, ready to move.

Liu Yuan annexed the forces of the two kings of the East China Sea and Hejian, and had Sima Zhen as a puppet in his hand, so he immediately coerced the Son of Heaven to order the princes, relocated the core of the power to Yecheng, announced that Sima Shu would be abolished again as the crown prince, and called on the world to crusade against him.

Sima Shu in Luoyang was not to be outdone, declaring Liu Yuan a thief, and at the same time proclaimed himself regent, 20,000 people in Chang'an, as well as the newly promoted King of Qi, all chose to support the nominal Sima Zhen because of Sima Shu's killing of King Zhao and taking his army, and the issue of vassal kings and Wuhu finally broke out along the trajectory of history.

The Xiongnu Liu Yuan became the largest local power in the Jin Dynasty, and a large number of treasures looted by the king of Hejian, the king of the East China Sea, from Luoyang as military funds, slowly began to think of other things.

Liu Yuan's cousin, Liu Xuan, the former governor of the northern region and the king of Zuoxian, pulled Liu Cong and others to secretly discuss: "In the past, our ancestors and the Han Dynasty were about brothers, and they shared sorrows and joys. Since the fall of the Han Dynasty, the Wei and Jin dynasties have risen one after another, and although we have an empty name, we no longer have the foundation of even a foot of land, and we have slowly declined from princes to commoners. Now that the Sima clan is killing each other, and the world is in turmoil, the time has come for us to establish a country and revive our ancestral industry. Liu Yuan, the king of Zuoxian, has a superhuman appearance, demeanor and talent, if the heavens didn't want to be magnificent, wouldn't he give birth to such a great man?"

So the nobles of the Xiongnu secretly jointly elected Liu Yuan as the big Danyu, and sent their henchmen Hu Yanyu to Yecheng to tell Liu Yuan the content of the conspiracy.

Liu Yuan told Liu Xuan and others to recruit the people of the five tribes, together with many Hu people in Yiyang, ostensibly claiming that they had finally been promoted to the family and supported Sima Ying, but in fact they were plotting to rebel.

Liu Yuan found Sima Yue and said: "Now the people who have abolished the prince are arrogant and violent, and the number of soldiers has reached 100,000, I am afraid that it is not something that the Su Guards and the soldiers near Yecheng can resist. ”

Sima Yue said: "Can the men and horses of the five divisions guarantee to come? Even if they can come to participate in the battle, the people under the abolished prince are extremely strong, and there are immortals to help them, I'm afraid it will not be so easy to defeat?"

Liu Yuan replied: "Your Highness is the son of Emperor Wu, who has made outstanding contributions to the royal family, has prestige, and is widely benevolent, and everyone in the world admires your demeanor.

Besides, Donghu's strength can not exceed the people of the five departments, I hope that Your Highness will encourage and appease the soldiers, calm the chaos, and defend Yecheng, I should be Your Highness, you will destroy the King of Huainan with the strength of the second department, and kill the abolished prince with the strength of the third department, and the heads of the two villains can be hung at the head of Yecheng City in the near future, and His Royal Highness will recover Luoyang, which will not be a problem at all. ”

Sima Yue was very happy to hear this, so he made a decision for the idiot emperor Sima Zhen to appoint Liu Yuan as the northern Shan Yu and the military minister.

Liu Yuan received the holy decree, and after returning to Zuoguo City, Liu Xuan, Liu Cong and others gave Liu Yuan the title of Da Danyu, and gathered 50,000 people in 20 days, and the capital was set to leave the stone.

In a short period of time, the vassal kings in various places supported troops to stand on their own, disobeying Luoyang's orders, and the Jin Dynasty almost fell apart.

Sima Shu proclaimed himself the regent, but in fact, the decree did not leave Luoyang, and the territory he actually controlled was only near Luoyang City and the Jianghuai area, and Jiangnan was still ready to move.

After the defeat of Shile, there were only more than 50,000 people in Sima Shu's hands, of which 30,000 were incorporated into the Luoyang City rout army, and the combat effectiveness was really not flattering.

There are only more than 20,000 people brought from Yecheng, most of these people were born in the old Zhao land, and when they heard that their hometown was occupied by Liu Yuan, they asked to go back, causing a series of escapes, and finally counted the troops, plus nearly 10,000 people in Shi Hu's hands, there were less than 50,000 horses left in total, not to mention pacifying the world, and it was even difficult to hold the existing territory.

After recovering Luoyang, Sima Shu first wanted to reward a wave of entourages who accompanied him to Jingjing, and several immortals wanted to send an honorary title such as Taishi Sikong Situ to send things away, and at the same time recruited the family to re-enter the court, but they didn't think that several families because of the previous relationship, they found all kinds of excuses to refuse, and there was a rare situation of official vacancies in the court.

The traversers behaved indifferently, no one should be, then the master would be.

Under the recommendation of Yang Pingfan, Zhang Xiaoming served as the secretary of the Ministry of Industry and the secretary of the Ministry of War, and the reason why Yang Pingfan persuaded Sima Shu was that Zhang Xiaoming could coordinate Sima Shu's power construction.