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.
King Zhaoxiang of Qin
In 256 BC, Qin struck back at Zhao again, with general Zhao Chan (趙摻) killing 90,000 men and capturing over 20 counties. Zhao would continue to be at war with Qin into the years following King Zhaoxiang's death, including participating in a fruitless anti-Qin offensive by the five-state alliance in 247 BC, and two major victories against Qin invasions in 240 BC and 231 BC (the latter won by general Li Mu), but it never recovered to its formal glory prior to the Battle of Changping. Meanwhile, Qin had fully regained its strength to become the only dominant military power, and went on to capture the Zhao capital Handan in 229 BC and eventually conquer the whole of Zhao in 222 BC.