In March of the 16th year of Chongzhen, Li Zicheng led the peasant rebels to surround the capital, and the war raged outside the capital. Emperor Chongzhen and his personal eunuch Wang Chengen boarded Jingshan in Jingshan Park, which is now Beijing. After that, Li Zicheng led an army to capture Beijing. Emperor Chongzhen let his concubines and princesses die or kill them. After handling the palace affairs, he and Wang Chengen, the minister, came to Jingshan Park to commit suicide by hanging themselves.
After Li Zicheng attacked the city, he showed the body of Emperor Chongzhen to the public and then buried it. Emperor Chongzhen really rested at this time.
After the death of Emperor Chongzhen, the Lee Dynasty in South Korea still used the Chongzhen title for many years. Because of the close relationship between the Ming Dynasty and the Korean Dynasty, many people in South Korea had a belief in Emperor Chongzhen at that time. After the death of Emperor Chongzhen, a Korean came to China to worship and died at the tomb of Emperor Chongzhen.
The Korean's name is Cui Xiaoyi. In the seventeenth year of Chongzhen, the Korean came to the tomb of Emperor Chongzhen alone. He didn't eat for seven days, and finally died of hunger strike, following Emperor Chongzhen. Although there is no detailed record in China's historical copy, there are descriptions of Cui Xiaoyi in the official history of North Korea and folk unofficial history, praising him as an eternal righteous man.
Perhaps it is precisely because of the support and help of the Ming Dynasty to neighboring vassal States that under the oppression of the Qing Dynasty, the Lee Dynasty still used the title of Emperor Chongzhen, and the Korean people also had a better impression of Emperor Chongzhen.