At that time, Zhu Hongwu laid the foundation of Nanjing and just ascended the throne. In order to fight against the cavalry of the Yuan people, the counties in Jiangsu and Anhui lost their horses. At that time, there was an empty plain in the southern mountainous area of Lu 'an, full of thatch and wormwood, which was an excellent place to graze horses, so the state officials promoted a horse-raising factory called Maotan Factory. After this homonym, the book was written as "Mao Tan Factory". After the unification of the Ming Dynasty, Mafang Nanshan in Maotan Factory gradually became an important town in Shannan due to its geomantic omen and business travel.
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