n Tzu's ART OF WAR
was in general use amongst military commanders, but they seem
to have treated it as a work of mysterious import, and were
unwilling to expound it for the benefit of posterity. Thus
it came about that Wei Wu was the first to write a commentary
on it.

As we have already seen, there is no reasonable ground to
suppose that Ts`ao Kung tampered with the text. But the text
itself is often so obscure, and the number of editions which
appeared from that time onward so great, especially during the
T`ang and Sung dynasties, that it would be surprising if numerous
corruptions had not managed to creep in. Towards the middle of
the Sung period, by which time all the chief commentaries on Sun
Tzu were in existence, a certain Chi T`ien-pao published a work
in 15 CHUAN entitled "Sun Tzu with the collected commentaries of
ten writers." There was another text, with variant readings put
forward by Chu Fu of Ta-hsing, which also had supporters among
the scholars of that period; but in the Ming editions, Sun Hsing-
yen tells us, these readings were for some reason or other no
longer put into circulation. Thus, until the end of the 18th
century, the text in sole possession of the field was one derived
from Chi T`ien-pao's edition, although no actual copy of that
important work was known to have survived. That, therefore, is
the text of Sun Tzu which appears in the War section of the great
Imperial encyclopedia printed in 1726, the KU CHIN T`U SHU CHI
CH`ENG. Another copy at my disposal of what is practically the
same text, with slight variations, is that contained in the
"Eleven philosophers of the Chou and Ch`in dynasties" [1758].
And the Chinese printed in Capt. Calthrop's first edition is
evidently a similar version which has filtered through Japanese
channels. So things remained until Sun Hsing-yen [1752-1818], a
distinguished antiquarian and classical scholar, who claimed to
be an actual descendant of Sun Wu, [36] accidentally discovered a
copy of Chi T`ien-pao's long-lost work, when on a visit to the
library of the Hua-yin temple. [37] Appended to it was the I
SHUO of Cheng Yu-Hsien, mentioned in the T`UNG CHIH, and also
believed to have perished. This is what Sun Hsing-yen designates
as the "original edition (or text)" -- a rather misleading name,
for it cannot by any means claim to set before us the text of Sun
Tzu in its pristine purity. Chi T`ien-pao was a careless
compiler, an