What was the Qin Dynasty's management of the frontier?

The Qin dynasty took the following measures to consolidate the frontier:

1, send general Meng Tian to counterattack the Huns, seize the Hetao area, and strengthen the strategic depth.

2. Build the Great Wall of Wan Li to resist the southward movement of tarquin.

3. Send troops to the southeast and Lingnan.

In order to conquer the south, a canal was dug. Establish Guilin County and Xiang County in the southwest to strengthen the jurisdiction over the south.

5. Build a chidao (equivalent to expressway) from Guanzhong area to the northern frontier.

6, a large number of immigrants to the border areas.

The Positive Significance of Developing and Administering Frontier Areas in Qin Dynasty

The Qin dynasty's governance of the frontier has the following historical and practical significance. The Qin Dynasty mainly repelled the Huns and recovered Henan. The Qin dynasty also sent troops to Lingnan and occupied Baiyue tribe. The Qin Dynasty's management of the frontier made Lingnan area be included in the rule of the Central Plains Dynasty for the first time, which strengthened centralization of authority in the Qin Dynasty and maintained its rule.

Qin's local management was mainly to build Chidao, and Qin Shihuang's purpose was to strengthen the rule and transport grain and troops throughout the country, which was more convenient. There are two centers around Xianyang. In this way, a transportation network extending in all directions with Xianyang as the center has been formed, linking all parts of the country together.