The prophecy says that the person who captured Sima Shi's jiangshan was called Niu Jin, and Sima Yi killed him, but unfortunately he killed the wrong person
We all know that prophecy is magical, because many times it is really fulfilled. Qin Shi Huang once received a prophecy that "the first emperor died and the world was divided", and later after his death, the world was in chaos. At the end of the Eastern Han Dynasty, there was also a prophecy that "eight thousand female ghosts replaced the Han room", when people did not understand what the eight thousand female ghosts were, until later Cao Pi usurped the Han and established the State of Wei, and people found that the combination of "eight thousand female ghosts" was a Wei character. At the end of the Three Kingdoms period, there was also a prophecy that "Niu Jin would replace Sima Shi to sit in the Jiangshan", and Sima Yi, who was in power at that time, immediately killed Niu Jin. However, after the fall of the Western Jin Dynasty, people learned that this Niu Jin had someone else. What the hell is going on, and who is this person? Let's move on.

The matter also has to start from when Sima Yi defeated Zhuge Liang and returned triumphantly, when Cao Wei's biggest headache was naturally the situation on the western front, and the Shu army under zhuge Liang's leadership had been invading and encroaching on the wei border, causing great panic throughout the Wei state. Several consecutive changes in commanders were to no avail, until Sima Yi took office later, with superb strategy and command art, finally succeeded in killing Zhuge Liang and recovering the lost land, Sima Yi was known as the savior of the Wei state. At this time, the Wei Ming Emperor Cao Rui died, and the young emperor Cao Fang succeeded to the throne, and from then on Sima Yi's power fell to the opposition, and his ambition to seize Jiangshan also sprouted.
Somehow, at that time, there was suddenly a prophecy in the world that "Niu Jin would replace Sima Shi to sit in Jiangshan", and Sima Yi learned from this sentence that his family would definitely be able to sit in Jiangshan in the future, but first of all, he had to get rid of this person called Niu Jin. Under the search of many parties, he found that there was only one niu jin who might pose a threat, that is, a fierce general in the Cao Army. However, Sima Yi did not dare to execute him on the spot, so he confirmed their family's rebellion, so he waited for an opportunity.
Later, King Ling of Shouchun colluded with wu to rebel, and his rebellion shook the world. Because Wu Jun did not succeed in breaking through Shouchun from beginning to end, Shouchun was stuck in Eastern Wu's throat like a shackle, but Wang Ling gave Eastern Wu this opportunity. Therefore, Sima Yi ignored his advanced age and personally led his troops thousands of miles to attack Shouchun. Wang Ling also did not expect that Sima Yi would come so quickly, he was not ready, and he was beheaded by Sima Yi on the spot before the Eastern Wu reinforcements arrived, Sima Yi cleanly and neatly resolved the rebellion, and Niu Jin was also secretly calculated by Sima Yi on the battlefield, claiming to have died in battle. After Sima Yi completed the last major event for the Sima family, he died soon after.
After his death, Sima Zhao took over the power, and at that time, the Sima family had completely controlled Cao Wei and destroyed the Shu state, and Sima Yan took over and effortlessly annexed the state of Wu to unify the world and establish the state of Jin. Because he felt that Niu Jin had been killed, and the Jin state was singing and dancing at this time, Sima Yan sang at night, completely indulging himself, and at the same time overdrawing the life of the Jin state. After Sima Yan's death, the Jin state was shortly destroyed due to its long-term lack of war preparedness and the emptiness of its national strength, and the foreign tribes in the north took advantage of the situation, and the Jin state was destroyed shortly after. Sima Rui of The Southern Crossing of the Crown re-established the State of Jin in Jianye, known in history as the Eastern Jin Dynasty. But this Sima Rui did not have the bloodline of the Sima family, and his father was a man named Niu Jin!
Conclusion: It turned out that the Western Jin Dynasty was a big king, and one of the princes was called Sima Xiao, and there were many beautiful women in his harem, and he couldn't take care of it himself. At that time, there was a bodyguard named Niu Jin in his palace who was very handsome, and the lonely princess committed adultery with him many times and finally gave birth to Sima Rui. If Sima Yi's three fathers and sons knew that they had spent their entire lives changing their lives against heaven, and although they had successfully usurped Cao Wei's Jiangshan, they would also make wedding dresses for others after their deaths, how would they feel?