381 years ago, on March 18, 1644 (February 10, 1644 lunar calendar), Li Zicheng conquered Beijing and the Ming Dynasty fell. Li Zicheng (1606.8-1645), the leader of the peasant uprising at the end of the Ming Dynasty. Formerly known as Hongji. When he became emperor, he took Li Jiqian as Taizu. He lived in Li Jiqian's village in Mizhi, Shaanxi Province. When he was a child, he shepherded sheep to the landlord (one said that his family was very wealthy), and he used to be a post soldier in Yinchuan. In the second year of the uprising in Chongzhen (1629), he was later a general under Gao Yingxiang, the king of Chuang, and he was brave and knowledgeable. During the eight-year Xingyang Congress, he proposed a plan of dividing troops and directing four-way attacks, which was approved by the leaders of various ministries, and his reputation grew. After Gao Yingxiang died the following year, he continued to be known as In the 11th year, he was defeated in Tongguan, and only led Liu Zongmin and more than ten others to hide in Luocong Mountain (in the border area of Henan and Shaanxi). The following year, he emerged from the mountains and started again. Thirteen years later, he was trapped in the Brazilian Yudong Mountain (one in the belly), and broke through the encirclement with fifty cavalry and entered Henan. At that time, the Central Plains suffered a serious famine, and class contradictions were extremely acute. Li Yan put forward slogans such as "All the fields are free from Fu", which were welcomed by the people and spread the ballad "Welcome the king of the war, no food". The army grew to millions and became the main force in the peasant war. In the 16th year of Chongzhen (1643), he was called King Xinshun in Xiangyang. In the same year, in Ruzhou, Henan (now Linru), he annihilated the main force of Sun Chuanting, In the first month of the following year, the Dashun regime was established, and the era name was Yongchang. On March 18, 1644, Li Zicheng sent Du Xun, a eunuch who had surrendered in Changping, into the city to negotiate secretly with Chongzhen. According to Volume 4 of the "Exam of the Year of Xiaoyi", Li Zicheng's conditions were as follows: "If you rush into the Ma Qiangzhong, you will agree to cut off the kings of the northwest region and reward the army with millions, and retreat to Henan... Since you are blocked, you are willing to curb the group of bandits in the imperial court, especially to help you suppress the Liao domain with strong troops. But you will not accept the edict and Haoer." Negotiations between the two sides broke down. In the early morning of March 19, Zhang Jinyan, the minister of the Ministry of War, took the initiative to open the Zhengyang Gate and invaded Beijing City. He welcomed Liu Zongmin Li Zicheng ordered a "ritual burial", a public sacrifice was set up at the Donghua Gate, and then moved to a Buddhist temple. On the 27th, he was buried in the tomb of Concubine Tian Gui. Li Zicheng moved to the Forbidden City and made Dou Meiyi, a palace girl, his concubine. Because the leaders of the uprising army made the mistake of being proud of their victory, they persecuted Wu Sangui's family. Forcing Wu Sangui against Wu Sangui, the nobles of the Manchu Qing Dynasty entered the customs and joined forces to attack the peasant army. He faced defeat, withdrew from Beijing, and led his army to fight in Henan and Shaanxi. In the second year of Yongchang (1645), he investigated the terrain in Jiugong Mountain, Tongshan, Hubei Province. Li Zicheng disappeared mysteriously. After Li Zicheng's remaining troops were surrendered to the Qing Dynasty, he rebelled against the Manchu and continued to fight