Four horses in the Western Jin Dynasty and eleven cows in the Eastern Jin Dynasty. What do you mean?

It means that the four emperors in the Western Jin Dynasty belonged to Sima's family, and the eleven emperors in the Eastern Jin Dynasty were descendants of Niu's family. Allusions come from

When Sima Yi was in power, he had the heart of Wei. At that time, there was a widely circulated divination book called "Xuanshitu", which recorded the prophecy that "cattle follow horses". Sima Yi also asked Guan Ju, an astrologer, to tell the fortune of his descendants. The result of Guan Ju's divination is not far from Xuanzang's Map. Sima yi didn't understand what it meant. Later, he became prime minister, and his power spread all over the world. One of his generals, Jinniu, fought for him and made great contributions. Sima Yi suddenly touched something, thinking of the prediction that "there will be cows after, and there will be horses after", he was very jealous. He was worried that Taurus would be bad for his descendants in the future, so he sent someone to invite him to dinner. Poisoned in the wine, Taurus is generous and unguarded. He died in such chaos. Sima Shi asked doubtfully, "Taurus is loyal to his father, why should he be killed?" Sima Yixun said: "The Oracle has predicted that there will be cows behind the horse. Don't poison Taurus, children and grandchildren will have future troubles! "

From then on, Sima Yi thought that when Taurus died, future generations could rest easy, but things were unpredictable. Sima Jin, the grandson of Sima Yi, attacked the Queen Langya, and his wife Xiahou was his concubine. Xiahou's family is very romantic. Soon they hooked up with a small official named Qin Niu in Wang Fu, and then they went to Si Marui.

It is said in the history books that Si Marui is not of royal blood, but the son of Qin Niu, a small official in Langya Wang Fu. Because of the rumor that "cattle and horses go hand in hand", the warrior Taurus was unjustly killed. Later generations nicknamed Si Marui Niu Rui. For example, Li Zhi, a thinker of the Ming Dynasty, called the Eastern Jin Dynasty "the cattle family of the Southern Dynasties", not the Sima family.

After Niu Jima.