Who is the emperor with the lowest sense of existence in history?

There have been more than 400 emperors in the history of China, some of whom are well known, while others have no sense of existence. Apart from the small political power of Wuhu, Sixteen Countries, Five Dynasties and Ten Countries, I think the emperor with the least sense of existence in the orthodox dynasty is Sima Dezong, the Emperor of Jinan.

Sima Dezong was born in 382 AD and died in 4 19 AD. He is the eldest son of Sima Yao, the fifth emperor of Xiao Jin. His mother is Sima Yao, the daughter of Shu Yuan Chen Gui, and she has a half-brother named Sima Wende.

According to historical records, Sima Dezong was mentally retarded, unable to speak, walked unsteadily, and even could not tell the difference between spring, summer, autumn and winter. Sima Yao has seen that this son is an idiot and it is impossible for him to succeed to the throne. But at that time, Sima Yao was in the Spring and Autumn Period, only in his thirties, and he was not in a hurry to change the crown prince.

Unfortunately, something unexpected happened. Because of a trivial drunken joke, Sima Yao was suffocated by his favorite concubine, Zhang Guiren, at the age of 36. Sima Yi Dezong, an idiot prince, was pushed to the front of history like a duck on a shelf.

How can such a retarded person govern the country? All the power of the country falls on Sima Yao's younger brother Sima Daozi and nephew Sima Yuan Xian. These two men have no talent for governing the country, which makes the country even worse. Huan Wen's son, Huan Xuan, took the opportunity to rebel and founded Huanchu, but in less than a year he was wiped out by Emperor Wu of Song, the general who mastered the Eastern Jin regime. He led troops to the Northern Expedition and destroyed Southern Yan. After the Qin dynasty, his ambition expanded and he wanted to stand on his own feet as a king.

In 4 19, Liu yupa sent someone to assassinate Sima Dezong at the age of 37. Sima Dezong has been someone else's puppet all his life. He can't speak and can't tell the four seasons, so he can't do anything. Of course, he is the emperor with the lowest sense of existence in history.