Qin dynasty
Note: King Zhaoxiang of Qin (秦昭襄王) had already been ruling Qin for 51 years when Qin annihilated the Zhou dynasty; however the other six warring states were still independent regimes. Some Chinese historiographers thus used the next year (the 52nd year of King Zhaoxiang of Qin) as the official succession from the Zhou dynasty.
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.