[Why] By the late Xia, class contradictions had sharpened to extremes, aristocratic life had grown corrupt, and the rule of law had collapsed across the state. The last king Jie was a tyrannical glutton whose reckless spending pushed state finances to total crisis. [What] Jie indulged in extravagance, built the towering Qing Palace, and butchered loyal ministers including Guan Longfeng under the counsel of flatterers. He compared himself to the sun that lights the earth, prompting his people to curse him and wish to perish alongside him. [Who] Jie is remembered as the first king in Chinese history to be a byword for cruelty, his debauched rule having lost the hearts of the realm entirely. The execution of upright ministers like Guan Longfeng ignited widespread public fury. [How] Jie's tyranny shattered the Xia into fragments as vassal states defected to the rising Shang. It tolled the death knell of Xia and became the classic historical lesson on the transfer of the Mandate of Heaven and the changing of regimes.
Why
The historic event of Tyranny of Jie of Xia represents a key developmental peak of the Huaxia dynastic system. The first warning of tyranny and the loss of the Mandate of Heaven. By establishing this moral or administrative benchmark, it continues to shape the structural and philosophical fabric of ancient Chinese statecraft.