idea of utilizing them does not seem to have occurred to anyone until Sun Hsing-yen, acting under Government instructions, undertook a thorough recension of the text. This is his own account:— Because of the numerous mistakes in the text of Sun Tzŭ which his editors had handed down, the Government ordered that the ancient edition [of Chi T’ien-pao] should be used, and that the text should be revised and corrected throughout. It happened that Wu Nien-hu, the Governor Pi Kua, and Hsi, a graduate of the second degree, had all devoted themselves to this study, probably surpassing me therein. Accordingly, I have had the whole work cut on blocks as a textbook for military men. The three individuals here referred to had evidently been occupied on the text of Sun Tzŭ prior to Sun Hsing-yen’s commission, but we are left in doubt as to the work they really accomplished. At any rate, the new edition, when ultimately produced, appeared in the names of Sun Hsing-yen and only one co-editor Wu Jen-shi. They took the "original edition" as their basis, and by careful comparison with older versions, as well as the extant commentaries and other sources of information such as the _I Shuo_, succeeded in restoring a very large number of doubtful passages, and turned out, on the whole, what must be accepted as the closest approximation we are ever likely to get to Sun Tzŭ’s original work. This is what will hereafter be denominated the "standard text." The copy which I have used belongs to a reissue dated 1877. It is in 6 _pen_, forming part of a well-printed set of 23 early philosophical works in 83 _pen_. [38] It opens with a preface by Sun Hsing-yen (largely quoted in this introduction), vindicating the traditional view of Sun Tzŭ’s life and performances, and summing up in remarkably concise fashion the evidence in its favour. This is followed by Ts’ao Kung’s preface to his edition, and the biography of Sun Tzŭ from the _Shih Chi_, both translated above. Then come, firstly, Cheng Yu-hsien’s _I Shuo_, [39] with author’s preface, and next, a short miscellany of historical and bibliographical information entitled _Sun Tzŭ Hsu Lu_, compiled by Pi I-hsun. As regards the body of the work, each separate sentence is followed by a note on the text, if required, and then by the various commentaries appertaining to it, arranged in chronological order. These we shall now proceed to discuss briefly, one by one. The Commentators Sun Tzŭ can boast an exceptionally long distinguished roll of commentators, which would do honour to any classic. Ou-yang Hsiu remarks on this fact, though he wrote before the tale was complete, and rather ingeniously explains it by saying that the artifices of war, being inexhaustible, must therefore be susceptible of treatment in a great variety of ways.