Tong Guan (1054–1126), style name Daofu (道夫), was a court eunuch, military general, political adviser, and Council of State to Emperor Huizong in the Song Dynasty. In the Water Margin, one of the Four Great Classical Novels of Chinese literature, Tong Guan is featured as an antagonist and enemy of the 108 Liangshan outlaws. He appears mainly in the later chapters.
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