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简介：The city of Ningyuan was first built in the third year of Xuande in the Ming Dynasty (AD 1428) as the Ningyuan Acropolis. After the Liaodong War broke out, due to the continuous defeat of the Ming army, Ningyuan, which was not originally a front line, was pushed to the front line. In the sixth year of the Apocalypse, Nurhachi led an army of 100,000 troops to approach Ningyuan, trying to capture Ningyuan in one go.