of Chao strongly disapproved of Lien P`o's cautious and
dilatory methods, which had been unable to avert a series of
minor disasters, and therefore lent a ready ear to the reports of
his spies, who had secretly gone over to the enemy and were
already in Fan Chu's pay. They said: "The only thing which
causes Ch`in anxiety is lest Chao Kua should be made general.
Lien P`o they consider an easy opponent, who is sure to be
vanquished in the long run." Now this Chao Kua was a sun of the
famous Chao She. From his boyhood, he had been wholly engrossed
in the study of war and military matters, until at last he came
to believe that there was no commander in the whole Empire who
could stand against him. His father was much disquieted by this
overweening conceit, and the flippancy with which he spoke of
such a serious thing as war, and solemnly declared that if ever
Kua was appointed general, he would bring ruin on the armies of
Chao. This was the man who, in spite of earnest protests from
his own mother and the veteran statesman Lin Hsiang-ju, was now
sent to succeed Lien P`o. Needless to say, he proved no match
for the redoubtable Po Ch`i and the great military power of
Ch`in. He fell into a trap by which his army was divided into
two and his communications cut; and after a desperate resistance
lasting 46 days, during which the famished soldiers devoured one
another, he was himself killed by an arrow, and his whole force,
amounting, it is said, to 400,000 men, ruthlessly put to the
sword.]

12. Having DOOMED SPIES, doing certain things openly for
purposes of deception, and allowing our spies to know of them and
report them to the enemy.

[Tu Yu gives the best exposition of the meaning: "We
ostentatiously do thing calculated to deceive our own spies, who
must be led to believe that they have been unwittingly disclosed.
Then, when these spies are captured in the enemy's lines, they
will make an entirely false report, and the enemy will take
measures accordingly, only to find that we do something quite
different. The spies will thereupon be put to death." As an
example of doomed spies, Ho Shih mentions the prisoners released
by Pan Ch`ao in his campaign against Yarkand. (See p. 132.) He
also refers to T`ang Chien, who in 630 A.D. was sent by T`ai
Tsung to lull the Turkish Kahn Chieh-li into fancied security,
until Li Ching was able to deliver a crushing blow against him.
Chang Yu says that th