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Exhibition introduction: Pictures and written materials from Prime Minister Cao’s Mansion in Xuchang tell the story of Cao Cao’s recruitment of talented people. Among them, there are those who welcomed Xun Yu with the title of "Zifang", left a letter to Xun You to pay homage to the military advisor, asked Jia Xu to fight against Guandu, inquired about the dream and changed his name to Cheng Yu, treated Guan Yu favorably and cherished the heroes, cooked wine with green plums to discuss heroes, put aside the past grudges and accepted Zhang Xiu, and let the past go. Use the story of Chen Lin and others that Cao Cao loves talents and uses virtuous people.