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[Chang Yu, following Tu Yu, says: "When you make a fire, the

enemy will retreat away from it; if you oppose his retreat and

attack him then, he will fight desperately, which will not

conduce to your success." A rather more obvious explanation is

given by Tu Mu: "If the wind is in the east, begin burning to the

east of the enemy, and follow up the attack yourself from that

side. If you start the fire on the east side, and then attack

from the west, you will suffer in the same way as your enemy."]

11. A wind that rises in the daytime lasts long, but a night

breeze soon falls.

[Cf. Lao Tzŭ's saying: "A violent wind does not last the space of

a morning." (Tao Te Ching, chap. 23.) Mei Yao-ch'en and Wang Hsi

say: "A day breeze dies down at nightfall, and a night breeze at

daybreak. This is what happens as a general rule." The phenomenon

observed may be correct enough, but how this sense is to be

obtained is not apparent.]