If you know the enemy and know yourself you need not fear the results of a hundred battles.
如果你了解敌人，也了解自己，你就不必害怕百战的结果。
-- Sun Tzu 孙子兵法
If you know the enemy and know yourself you need not fear the results of a hundred battles.
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If you know the enemy and know yourself you need not fear the results of a hundred battles.
如果你了解敌人，也了解自己，你就不必害怕百战的结果。
-- Sun Tzu 孙子兵法
