Meng TIan distinguished himself in leading campaigns against the Xiongnu and playing a role in the construction of the Great Wall of China.
In 224 BC, having recently conquered Wei, the Qin king Ying Zheng appointed Li Xin as commander-in-chief and Meng Tian as his vice-general to lead a 200,000 strong army in an assault against Chu.
Meng Tian's ingenuity can be seen in the efficient (though inhumane) building policy, the consideration of topography, and the utilisation of natural barriers.
Meng Tian is also credited with inventing the guzheng (筝), a bridge zither with twelve or thirteen strings.
He usually leads his forces alongside Wang Ben/Ou Hon and Li Xin/Ri Shin, but his tactical expertise is higher and better known due to him being a graduate of the Strategist Academy and the top student under Lord Changping's school.