長平の戦い
Zhao () was one of the seven major states during the Warring States period of ancient China. It was created from the three-way Partition of Jin, together with Han and Wei, in the 5th century BC. Zhao gained significant strength from the military reforms initiated during King Wuling's reign, but suffered a crushing defeat at the hands of Qin at the Battle of Changping. Its territory included areas now in modern Inner Mongolia, Hebei, Shanxi and Shaanxi provinces. It bordered the Xiongnu, the states of Qin, Wei and Yan. Its capital was Handan, in modern Hebei Province.