The Art of War by active 6th century B.C. Sunzi

commentator is given as above by Cheng Ch’iao in the _Tung Chih_, written about the middle of the twelfth century, but he appears simply as Ho Shih in the _Yu Hai_, and Ma Tuan-lin quotes Ch’ao Kung-wu as saying that his personal name is unknown. There seems to be no reason to doubt Cheng Ch’iao’s statement, otherwise I should have been inclined to hazard a guess and identify him with one Ho Ch’u-fei, the author of a short treatise on war, who lived in the latter part of the 11th century. Ho Shih’s commentary, in the words of the _T’ien-i-ko_ catalogue, "contains helpful additions" here and there, but is chiefly remarkable for the copious extracts taken, in adapted form, from the dynastic histories and other sources.