In the winter of the 19th year of Yongchang, there was an unknown fire in the East Palace, and Prince Li Heng was "buried" in the flames.
Ten years later, the Shen family of Yangzhou salt merchants came to Zhou Yin, a accountant with six fingers on his left hand. He was superb in chess and unparalleled in resourcefulness. Just as the nine kings were seizing the throne, the court was in turmoil, and the salt administration was corrupt, a chess game that spanned ten years was quietly restarted.