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简介：With troops garrisoned in a fortified city, the attack cannot be defeated for a long time, and the army has lost its vigor. Under such circumstances, the sooner the official and army reinforcements arrive, the better. If they arrive as early as possible, they can break out of the siege and break out of the siege. As long as the reinforcements outside the city are dealt with, even if Kaifeng has an iron wall, there is no need to worry about breaking into the camp.