Qin Shi Huang (born c. 259B. C., Qin , northwestern China,died 210/209),personal name Zheng,was king of the Chinese State of Qin from 247 B. C. to 221 B.C.,and then the first emperor of a unified China from 221B.C. to 210 B. C.,ruling under the name First Emperor.
Having unified China,he and his prime minister Li Si passed a series of major reforms aimed at cementing the unification,and they undertook some gigantic construction projects,most notably the precursor version of the current Great Wall of China.