蒙恬
The settlement of the north continued up to Qin Shi Huang's death in 210BC, upon which Meng Tian was ordered to commit suicide in a succession conspiracy. Before killing himself, Meng Tian expressed regret for his walls: "Beginning at Lintao and reaching to Liaodong, I built walls and dug moats for more than ten thousand "li"; was it not inevitable that I broke the earth's veins along the way? This then was my offense."