The Western Jin Dynasty, as a unified dynasty that ended the establishment of the Three Kingdoms, like many eras that experienced chaos, was quickly developed well when it was just established, because it adapted to the people's desire to stabilize the society, and was rapidly developed, known in history as the "Taikang Era". But why did the Western Jin Dynasty, which was so economically prosperous, end up with a "second death"?

<h1>Reasons for rulers</h1>
Although the establishment of the Western Jin Dynasty had a lot to do with Sima Zhao's merits, after all, the real establishment of the Western Jin Dynasty as a unified dynasty was under the rule of Sima Yan! Therefore, he is the founding prince of the Western Jin Dynasty, and how the founding prince of a dynasty in history is, to a large extent, determines the stylistic characteristics of the future generations of this dynasty, and even the social atmosphere. For example, Zhu Yuanzhang, the founding prince of the Later Ming Dynasty, did not want to govern the country and manage government affairs, so the later Ming Dynasty, although it met many unreliable emperors, but the social atmosphere of Daming is still OK, and the name of Hai Rui's Qingtian has been passed down through the ages, which shows a certain truth!
But what about Sima Yan? What did he bring to the Western Jin Dynasty? Not long after the establishment of the Western Jin Dynasty, he began to choose concubines to enrich his harem, because the number of concubines selected was too much, he thought of a method for himself, found a sheep, pulled a cart for himself, where the sheep heard, he stayed wherever he stayed, and later generations also formed an idiom for his practice: "Sheep cart hope lucky."
The extravagance of the founding monarch led to the social atmosphere of sucking gold began to become extravagant and confused, Sima Yan's ingenious indulgence, and even contained the jokes of the nobility, people began to compete for the rich, such as the famous Wang Kai and Shi Chongdoufu: one surrounded the road for forty miles with silk, one used candles as firewood; Wang Kai had the coral given by the emperor, but Shi Chong's even the coral given by the emperor did not directly break it and let him pick it at his own home, the so-called rich enemy country is this meaning, right? The "New Language of the World" records that the coral trees were taken from the left and right, three feet and four feet, and the strips were unique, and there were six or seven glorious ones, such as the Kai. Kai was devastated.
<h1>Wildly divided</h1>
In addition, Sima Yan decided to take history as a lesson, and on the basis of learning from the previous dynasty, he felt that the reason why Cao Wei was stolen by his own family was because he did not have the same surname as Wang, and Cao Pi had no right to oppress his brothers, so he felt that he could learn from history
Feng tong surname Wang, to maintain the Sima family's Jiangshan. Then, his uncles Sima Gan, Sima Lun, and Sima Liang were named the Kings of Pingyuan, Lang, and Fufeng, respectively, and his younger brother Sima You was made the King of Qi, all of which were great powers, and Sima Yan's uncle Sima Fu, the king of Anping County, surpassed the system, and the number of households was as high as 40,000. Sima Yan's family had 27 kings at the same time, and more than a dozen sons alone. Give them military power and land, and directly lay the groundwork for the chaos of the overlords in the future generations!
<h1>Heir issues</h1>
To create a country, it takes countless people, but to destroy a country, often one person is enough! That's the ruler's
Succession issues! The ancient Chinese way of succession was: father died and son succeeded, brother died and brother and (auxiliary way), the second kind of ruler died without a son, or a son was small, in order to avoid the suspicion of the lord and the young country. At that time, it was the Taikang era, the world was already too peaceful, and there was no problem of form crisis! Sima Yan's sons are as many as twenty!
But the problem is that Sima Yan's throne was supposed to belong to his younger brother Sima You, when Sima Shi died of injury and illness, Sima You was only eight years old, and the Western Jin Dynasty was still in a period of development. In order to stabilize, Sima Zhao inherited Sima Shi's cause! Because Sima You is only very literate, and Sima Yan can judge big things! The history books record that he was an emperor with his hands over his knees, and he always claimed to return the throne to Sima You after he succeeded to the throne.
However, in 290 AD, Sima Yan let his son Sima Zheng inherit, although he was the eldest son, but this son was flawed - mentally retarded! For example, the famous "why not eat minced meat", that's what he said! However, Sima Yan let his mentally handicapped son succeed to the throne, first, to make Sima You, who was not a concubine, die, and second, Sima Yan wanted Sima Zheng's eldest son Sima Suo to succeed to the throne, and the son could not compare with the grandson! However, the child was eventually killed by Jia Nanfeng, and Sima Zheng became a puppet.
<h1>The empress was unskilled, leading to the Rebellion of the Eight Kings</h1>
However, Sima Yan thought that Sima Zheng was one of the protectors of Empress Yang, although the Spring and Autumn Ram Biography records that she used it: Li Yan is not long to be virtuous, and Li Zi is expensive but not long. Such a statement protected his son. However, Empress Yang of Yang also married Sima Zheng to a wife, Jia Nanfeng, who was the daughter of jia chong, the number one strategist, but this woman later killed many of the kings of the Sima family.
As a result of the dissatisfaction of the princes of the world, the Rebellion of the Eight Kings broke out in the Western Jin Dynasty, and its core figures were Sima Liang, the King of Runan, Sima Wei, the King of Chu, Sima Lun the King of Zhao, Sima Ran the King of Qi, Sima Qi the King of Changsha, Sima Ying the King of Chengdu, Sima Yong the King of Hejian, and Sima Yue, the King of the East China Sea, who had been fighting for sixteen years!
<h1>The Rebellion of the Eight Kings leads to: Wuhu Chaohua</h1>
The Rebellion of the Eight Kings, which had induced ethnic minorities who had moved inland, were also drawn into wars, and the Rebellion of the Eight Kings spread into nationwide wars, wars between the Han and ethnic minorities, such as the famous ethnic minority leader Liu Yuan of the Xiongnu. The "Rebellion of the Eight Kings" was one of the most serious imperial civil unrest in Chinese history, when the social economy was seriously damaged, leading to the fall of the Western Jin Dynasty and the turmoil of the past three hundred years, and many ethnic minority regimes appeared in The land of China, the main five ethnic groups are: Xiongnu, Xianbei, Xianbei, Qiang, and Qiang. This enabled china to enter the period of the Five Hu and Sixteen Kingdoms (Wuhu Chaohua).
The above-mentioned Liu Yuan is even more famous, the leader of the "pseudo-Han" of the main regime of the ethnic minority regime at that time, and his son Liu Cong attacked Luoyang, captured Emperor Huai of Jin, and the Western Jin Dynasty was destroyed! Since then, China has entered an era of frequent wars and chaos, the economy has suffered great losses, population, agriculture, and all aspects of society have been affected, and China has entered a comprehensive chaotic world, almost a disaster for the Han nationality.
However, it is also undeniable that the war has caused the people of the Yellow River Basin to move south, and the economic integration of ethnic minorities in Yunnan and other places has increased the development process of China's multi-ethnic integration! However, the demise of the Western Jin Dynasty was ultimately due to Sima Yan, who himself did not pay attention to frugality, resulting in upward and downward effects, and regardless of the development of the country, insisted on establishing the weak as the king, which led to the tragic death of The Western Jin II.