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简介：In the early Ming Dynasty, the quality of Tianjin Guard's soldiers was still guaranteed, but by the end of the Ming Dynasty, they had basically become farmers and had no fighting power at all. The imperial court had always been aware of the situation in Tianjin. In the first year of Tianqi, the imperial court re-established a governor in Tianjin in an attempt to boost Tianjin's military strength and serve as a defense for the capital, but with little success.