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Among the Four Lords of the Warring States Period – Pingyuan, Xinling, Chunshen, and Mengchang – Tian Wen, Lord Mengchang, stood apart. The others served their homelands with unwavering loyalty: Lord Pingyuan defended Zhao, Lord Xinling stole the tally to save Zhao, and Lord Chunshen died in service to Chu. But Lord Mengchang drifted…
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Wang Anshi, prime minister of the Song Dynasty, was fond of public utility projects.