"Chinese historian" . "1914Z"^^ . . . . . . "Yang Kuan"@en . "2005Z"^^ . . "Yang Kuan (Chinese: \u6768\u5BBD, 1914 \u2212 September 1, 2005) was a Chinese historian specializing in pre-Qin Dynasty Chinese history. He is considered an authority of the Warring States period, and his History of the Warring States, first published in 1955, remains the most authoritative treatment of the subject."@en . . "2005-09-01Z"^^ . . . "\u6768\u5BBD"@en . .