何延錫 Ho Yen-hsi of the Sung dynasty. The personal name of this commentator is given as above by 鄭樵 Chêng Chʽiao in the Tʽung Chih , written about the middle of the twelfth century, but he appears simply as 何氏 Ho Shih in the Yu Hai , and Ma Tuan-lin quotes Chʽao Kung-wu as saying that his personal name is unknown. There seems to be no reason to doubt Chêng Chʽiao’s