Who was the most useless emperor in Chinese history?

Emperor Xiaowu of the Eastern Jin Dynasty (Sima Yao) Although Sima Yao was a monarch who devoted himself to state affairs and valued virtuous ministers, he was also a drunkard. History books say that he often drank all night long. In Hualin Garden (now in Nangutai City, Jiming Mountain, Nanjing City), he even raised his wine to the Taibai Venus passing by in the sky and said: "Changxing, I urge you to have a glass of wine." , How can the emperor be evil since ancient times!" In September of the 21st year of Taiyuan (396), Sima Yao drank with his beloved Zhang Guiren in the Qingshu Palace in the palace. Sima Yao, who had drunk too much yellow soup, was already seventy points drunk and asked Zhang Guiren to accompany him. drink. Zhang Guiren was already drunk and tried his best to say goodbye. Sima Yao looked sullen, and half-truthfully went into a drunken rage: "You were honored as a noble because of your beauty back then. Now that you are nearly 30 years old, your beauty is not as good as before, and you have not given birth to a child. You occupy the space of a nobleman for nothing." I will destroy you tomorrow and choose someone new." At this point, he vomited loudly and sprayed all over Zhang Guiren's head and body. Before this, it was his queen who spit on him after drinking too much. Now he spits on Zhang Guiren, which can be regarded as venting his anger. Then, Sima Yao was so drunk that he fell into a deep sleep. In fact, Sima Yao was just too drunk and instinctively told a joke, but unexpectedly he was killed. Sima Yao's drinking conversation was like a bolt from the blue to Zhang Guiren. Ever since Zhang Guiren gained favor, she has relied on favor to become arrogant, and she has never been reprimanded or humiliated like this. She is also jealous, and as the saying goes, "tell the truth after drinking", not to mention Sima Yao is lustful, so she would naturally prefer the emperor's words. Believe that it exists, but not believe that it does not exist. Thinking that after years of careful service, he would be relegated to the cold palace or even sentenced to death, he suddenly felt murderous. So she summoned her confidant maids, and while Sima Yao was sleeping, she moved several large quilts, and covered Emperor Sima to death while he was still sleeping. Historical data does not say that Sima Yao was smothered to death by a palace maid ordered by a nobleman. "Book of Jin·Volume 11" records that "he was killed by Zhang Guiren." "Book of Jin·Volume 9" records that "Zhang Guiren was favored at that time, but he lost his favor after a few years. The emperor said in a play: 'You should be deposed because of your years.' The noble man was secretly angry, and in the evening, the emperor was drunk and died violently. "After Sima Yao's death, he was given the posthumous title of Emperor Xiaowu. The temple name is Liezong. Together with Queen Xiaowu Ding, they were buried in Longping Mausoleum (now Meihua Mountain in Zhongshan, Nanjing). The poor and innocent Emperor Sima lost his life as an emperor, which took several lifetimes to cultivate, just because he made a little joke while drunk, which has become an eternal legend. It is said that the next day, Zhang Guiren lied that the emperor had "collapsed" in his sleep, and was able to hide the truth. One theory is that Zhang Guiren knew that he had committed a heinous crime, so he bribed Sima Yuanxian and his surroundings with a large sum of money. As expected, the effect was astonishing, and Sima Yuanxian actually did not pursue any accountability for his uncle's death. The new emperor Sima Dezong was an idiot. He couldn't even figure out whether he had enough to eat, and of course he couldn't raise any questions. Soon, Zhang Guiren took advantage of the chaos in the palace and fled with the gold and silver (and went to harm others).