Zhao Zhongyuan, who had been guarding the frontier for twenty years, had an army of 300,000, but the emperor reduced his power and summoned him to the capital. He pretended to obey the handover of power overnight, but in fact he had already understood the emperor's plan. After entering the capital, his family was kidnapped and Prime Minister Cui Yan died tragically. Zhao Zhongyuan was imprisoned in the sky prison, but he secretly planned to use the prince's grudge against the emperor to mobilize the border troops to build momentum, stir up public opinion in the capital, and promote the prince's uprising. He worked step by step to protect his family, placing the abdicated emperor under the supervision of the border army to check and balance the new emperor. The crown prince's ascension to the throne had to end with his "treason". In the end, Zhao Zhongyuan accepted the execution calmly, and a game of imperial power ended with his sacrifice.
