三中二中三个多少组简介：At the same time, the Ming Dynasty also took advantage of this period to cut down dense forests, build roads in Yunnan, train troops on the spot, familiarize themselves with the climate and geography, and prepare for possible incidents.
At the same time, the Ming Dynasty also took advantage of this period to cut down dense forests, build roads in Yunnan, train troops on the spot, familiarize themselves with the climate and geography, and prepare for possible incidents.
