History professor Cui Yang travels to another world and discovers that here, chess is used as a weapon and heroes are sons. When others were thinking hard about the chess strategy, he recited softly: "But the flying general of Dragon City is--" A gray old pawn suddenly burst into light. In the void, an old general stood with his sword in his hand, and his voice sounded like thunder: "I am the heroic cavalry general of the Han Dynasty, Li Guang!"
