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What measures did the Qin Dynasty take to consolidate its border areas?

1. Send General Meng Tian to launch a massive counterattack against the Huns and seize the Hetao area.

2. Build the Great Wall to resist the Huns cavalry going south. 3. Send troops to the southeast and Lingnan.

4. In order to conquer the south, the Ling Canal was dug. Guilin County and Xiang County were established in the southwest to strengthen jurisdiction over the south.