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简介：Fighting until dawn, the 10,000 soldiers and horses led by Yang Chengzu suffered heavy casualties, but they could not even break through the first line of defense of the official army. Seeing that the breakout failed at dawn, the entire army was about to be annihilated. Yang Chengzu led his own troops to launch an attack. A desperate assault - less than 500 people, and already exhausted, tried to break through the defense line of the official army.