• 孟氏 Mêng Shih . The commentary which has come down to us under this name is comparatively meager, and nothing about the author is known. Even his personal name has not been recorded. Chi Tʽien-pao’s edition places him after Chia Lin , and 鼂公武 Chʽao Kung-wu also assigns him to the Tʽang dynasty, 98 but this is a mistake, as his work is mentioned in the 隋書經籍志 . In Sun Hsing-yen’s preface, he appears as Mêng Shih of the Liang dynasty (502⁠–⁠557). Others would identify him with 孟康 Mêng Kʽang of the 3rd century. In the 宋史藝文志 , 99 he is named in one work as the last of the 五家 “Five Commentators,” the others being Wei Wu Ti , Tu Mu , Chʽên Hao and Chia Lin .
• 李筌 Li Chʽüan of the 8th century was a well-known writer on military tactics. His 太白陰經 has been in constant use down to the present day. The 通志 mentions 閫外春秋 ( lives of famous generals from the Chou to the Tʽang dynasty ) as written by him. 100 He is also generally supposed to be the real author of the popular Taoist tract, the 陰符經 . According to Chʽao Kung-wu and the Tʽien-i-ko catalogue, 101 he followed the 太乙遁甲 text of Sun Tzǔ which differs considerably from those now extant. His notes are mostly short and to the point, and he frequently illustrates his remarks by anecdotes from Chinese history.