Qin Er Shi vs Sun Liang

After Qin Shi Huang's death, Zhao Gao and Li Si forged a decree to force the crown prince Fusu to commit suicide and installed Huhai as Qin Er Shi. This illegitimate succession undermined the dynasty's legitimacy and placed an incompetent ruler on the throne.

Chen Sheng and Wu Guang led a rebellion of conscripted farmers at Dazexiang, sparking widespread revolts across the Qin empire. Qin Er Shi's harsh policies and heavy taxation had created widespread discontent, and the uprising quickly spread, leading to the dynasty's collapse.

Zhao Gao falsely accused Chancellor Li Si of treason. Qin Er Shi ordered Li Si's execution by the Five Pains method, along with his entire family. This removed the last capable administrator from the Qin court, accelerating the dynasty's decline.

Zhao Gao, fearing Qin Er Shi's anger over military defeats, staged a coup and forced the emperor to commit suicide. Zhao Gao then installed Ziying as the new king. This event marked the effective end of Qin rule, as Ziying surrendered to Liu Bang shortly after.

Sun Liang became emperor of Eastern Wu at age 8 after the death of his father Sun Quan. His reign was dominated by regents including Zhuge Ke and later Sun Chen.

Sun Liang, emperor of Eastern Wu, was deposed by the regent Sun Chen after attempting to assert his authority. He was demoted to the rank of Prince of Kuaiji and placed under house arrest.

Sun Liang died in exile at age 16, possibly murdered on the orders of Sun Xiu, who had succeeded him as emperor. His death ended any chance of restoration.