In 215 BC, Qin Shi Huang ordered General Meng Tian to set out against the Xiongnu tribes in the Ordos region, and establish a frontier region at the loop of the Yellow River.

[1] In 215 BC, Meng Tian succeeded in defeating the Xiongnu, driving them from the Ordos and seizing their homeland.

[3] After the catastrophic defeat at the hands of Meng Tian, the Xiongnu leader Touman was forced to flee far north into the Mongolian Plateau.

[4] Following the victory against the nomads, Meng Tian was instructed to secure the frontier with a line of fortifications, which would become known as the Great Wall of China.

[5] Crown Prince Fusu and General Meng Tian were stationed at a garrison in Suide and soon began with the construction of the walled defenses, which would be connected with the old walls from the Qin, Yan, and Zhao states.