. . "1951" . "He" . "He yan guang" . "Yanguang" . . "贺延光" . "yan" . "He Yanguang" . "何延光" . "贺延光" . "贺延光" . "yan He yan guang" . "Yanguang He"@en . "Yan'guang" . . "何延光" . "Yan'guang He" . "Yanguang"@en . . "He"@en .