Wang Meng (Former Qin)
Wang Meng (王猛, pinyin Wáng Měng) (325–375), courtesy name Jinglüe (景略), formally Marquess Wu of Qinghe (清河武侯), served as prime minister to the Former Qin emperor Fu Jiān in the fourth century. Under his governance, Fu Jiān's empire expanded from encompassing only most of Shaanxi, eastern Gansu, and extreme western Shanxi and Henan, to covering nearly all of then-Chinese territory north of the Huai River and the southwest. He is commonly regarded as one of the greatest statesmen in Chinese history.
Read more about Wang Meng (Former Qin): Early Life, Early Career, Late Career