King Zhaoxiang of Qin
Reigning over 55 years, he was one of the longest-serving rulers during the Eastern Zhou Dynasty. Although making numerous policy mistakes during his later years, his aggressive territorial expansions were pivotal in consolidating the state of Qin as the dominant military powerhouse in the late Warring States period. It was the strategic dominance established during his reign that paved the way to Qin's eventual successful unification of China under his great-grandson, Ying Zheng.
Qin Shi Huang
Qin Shi Huang (, ; 18 February 25910 September 210) was the founder of the Qin dynasty and was the first emperor of a unified China. He was born Ying Zheng () or Zhao Zheng (), a prince of the state of Qin. He became Zheng, the King of Qin () when he was thirteen, then China's first emperor when he was 38 after the Qin had conquered all of the other Warring States and unified all of China in 221 BC. Rather than maintain the title of "king" ( "wáng") borne by the previous Shang and Zhou rulers, he ruled as the First Emperor () of the Qin dynasty from 220 to 210 BC. His self-invented title "emperor" ( ""), as indicated by his use of the word "First", would continue to be borne by Chinese rulers for the next two millennia.