Zhao Ling disguised himself as the second son of Ying Zheng and pretended to be stupid to avoid being demoted by Fusu. After three years of saving fire food in Sanchuan County, I calculated that the First Emperor should die next year. Unexpectedly, the news of his death came early. He led the black-armored army to surround the palace and put his sword at Hu Hai's throat: "The edict says Fusu will inherit? But I don't recognize the sword." The secret guard rushed to the secret room to report the news, and Ying Zheng jumped up and shouted: "The traitor!"