[Why] In late Ming, the Little Ice Age climate caused successive years of great famine in the north, yet the court because of the Liaodong war added tax and forced the people, causing the Shaanbei to erupt with sky-overwhelming peasant uprising, with defense lines collapsing in and out. [What] Roving King Li Zicheng led the rebel army with the call of equalize fields and exempt grain, sweeping across the country, and stormed Juyongguan in Beijing. Li Zicheng entered the capital, and Emperor Chongzhen in despair hanged himself on the bent-neck tree at Coal Hill at Jingshan to die for the country. [Who] Li Zicheng was a generation roving king of strong rebellious recruiting force but lacking central governance far vision. Emperor Chongzhen Zhu Youjian though diligent in governance was suspicious and cruel, finally reduced to the tragic historic emperor of Ming's fall. [How] Li Zicheng entering the capital marked the wholesale destruction of the two-hundred-seventy-six-year Great Ming Dynasty, with the inside-the-pass regime falling into unprecedented chaos. It directly opened the bloody grand curtain of Qing army entering the pass and Eight Banners reorganizing the realm.
Why
The historic event of Fall of Ming and Suicide of Chongzhen represents a key developmental peak of the Huaxia dynastic system. The tragic end of the Ming under combined pressure of famine, finance, and warfare. By establishing this moral or administrative benchmark, it continues to shape the structural and philosophical fabric of ancient Chinese statecraft.