Hongyan Chenglin, the last emperor of the Jin Dynasty, should be regarded as the emperor with the shortest reign in China history, less than a day! There were many emperors in ancient China, but their rule was generally short-lived. Many people were ousted after sitting on the throne for about a year. For example, Zi Ying, the king of Qin, helped Qin Ershi to the stage after the traitor Zhao Gao killed him, but he was not allowed to claim the title of emperor, saying that all rebellions were king, and the land of Qin was not as vast as before, so he could only be called the king of Qin. In fact, Zhao Gao is paving the way for himself to be proclaimed emperor. Zi Ying, the king of Qin, contacted an old minister and stabbed Zhao Gao to death, but it was too late to change the emperor's name back, because Liu Bang's army was already in Enemy at the Gates. Zi Ying had to tie himself up, confess his sins, and offer the city to surrender. It took 46 days from the time he ascended the throne to surrender. However, Ziying is by no means the shortest term. In the Ming Dynasty, there was a Emperor Guangzong Taichang who was shorter than him. Emperor Wanli, the father of Emperor Taichang, reigned for forty-eight years and finally swallowed that tone. Zhu Changluo, the emperor of Taichang, poured out his pent-up desire like a volcanic eruption. Although his father's bones were not cold at this time, and although Nurhachi's army was approaching step by step, he chose thirty beautiful women to his palace at once, willy-nilly. It's a pity that he only enjoyed it for more than half a month. He can't afford to get sick, is top-heavy, vomits and diarrhea, and the doctors in the hospital have no effect. At this time, an official named Li presented a red pill, saying it was a panacea for all diseases. Emperor Taichang was in a hurry to find a doctor and ate the red pill. After taking the red pill, he immediately felt refreshed and full of energy. Emperor Taichang was overjoyed and asked Li to offer another one. After Emperor Taichang didn't want to eat the second red pill, his condition deteriorated rapidly and he died without much effort. This is the "red pill case", one of the three major cases in Ming Palace, and the reign of Emperor Taichang was only 29 days until his death. Emperor Taichang Zhu Changluo is a typical person who died of drug addiction, but he is not the shortest, and there are many people who can do what he can. In the Western Han Dynasty, Emperor Zhao Han was childless, and General Huo Guang and his ministers elected Liu He, the king of Changyi, as emperor. Liu didn't expect this great good thing to fall on his head. He runs amok when he is happy. It is said that he did 1 127 bad things in 27 days, with an average of more than 40 a day. It is really rare that the efficiency of doing bad things is so high. General Huo Guang couldn't stand it, so he had a meeting with ministers and decided to abolish the emperor. Huo Guang asked the Empress Dowager, appealed to the ancestral temple and announced the abolition of the throne of Liu He, the king of Changyi. Liu Hehu made trouble for 27 days, two days less than Emperor Taichang of the Ming Dynasty. Is there anything less than Liu He? There is still some. I checked and found that Hong Yan Cheng Lin, the last emperor of the Jin Dynasty, should be regarded as the emperor with the shortest reign in the history of China. In A.D. 1234, under the sweeping of Mongolian fighters, the once powerful Dajin Kingdom was left with only an isolated city in Cai Zhou. Mongolia joined the Southern Song Dynasty, surrounded Cai Zhou and attacked day and night. Jin Aizong in the city saw that the tide was gone, so he called his ministers and said that he didn't want to be the king of national subjugation, and he wanted to pass the throne to Hong Yan Cheng Lin, an imperial aristocrat. On the ninth day of the first month, a ceremony of succession was held. The ceremony was not over yet, and the south wall had been broken by Song Jun, so the ceremony was finished in a hurry. Jin Aizong hanged himself, and Wan Yan Cheng Lin, who had just ascended the throne, started street fighting, but was soon eliminated. Wan Yan Cheng Lin died in the mutinous army, and the ruler perished. In those days, Cai Zhou was as big as a town today, and Mongolian soldiers wiped out the whole city with no effort. Emperor Wan Yan Cheng Lin wore laurels for more than half a day, at least for an hour or two. Therefore, there should be no objection that he is the shortest emperor in the history of China. I looked through the "Lineage Table of Emperors in Past Dynasties" at the back of Ci Hai. In the column of Jin Dynasty, the name of Wan Yan Cheng Lin was impressively listed, which shows that his imperial status was recognized by later generations.