Southern Song Dynasty years, the emperor suddenly ill coma, the chaos, coincided with black teeth King black mud visit, eighteen Prince dragon son had to her banquet. During the banquet, black mud boast black teeth strong national strength, with Wu Shen, Muse, God of cookery, God four chess master, dragon son secretly funny, because these four are Han Chinese strengths, so the two sides decided to compete, but the black mud had bribed the song four master, under the dragon. Knowledge in a trap, then, the dragon and black mud contract: in March after two games, Song Guoruo lost the Gede reparations.