• 張預 Chang Yü . The list closes with a commentator of no great originality perhaps, but gifted with admirable powers of lucid exposition. His commentary is based on that of Tsʽao Kung , whose terse sentences he contrives to expand and develop in masterly fashion. Without Chang Yü , it is safe to say that much of Tsʽao Kung’s commentary would have remained cloaked in its pristine obscurity and therefore valueless. His work is not mentioned in the Sung history, the Tʽung Kʽao , or the Yu Hai , but it finds a niche in the Tʽung Chih , which also names him as the author of the 百將傳 Lives of Famous Generals . 112