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Jing Chun said: “Aren’t Gongsun Yan and Zhang Yi truly great men? When they get angry, feudal lords tremble; when they stay at ease, wars across the world cease.”
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Brief: This article explores the intense rivalry between the Vertical Alliance (Hezong) of Su Qin and the Horizontal Alliance (Lianheng) of Zhang Yi during the Warring States period. It details how Su Qin’s coalition of six states threatened Qin, only to be countered by Zhang Yi’s diplomatic stratagems that divided them. The narrative follows…