<p>"They were built on the hillside for two reasons, to be sheltered from the wind and hidden from enemies," said Li Junjie, vice chairman of the Changping Battle research institute.<br /><br />The Battle of Changping took place in 260 B.C. between the state of Qin and the state of Zhao during the Warring States Period.<br /><br />The decisive victory of Qin secured its prominence and ultimately allowed Qin to unify China in 221 B.C.<br /><br />Pottery pieces and iron arrowheads were also found near the stoves. "Arrows with iron heads were main weapons of the state of Zhao," said Li.</p>
<p>"They were built on the hillside for two reasons, to be sheltered from the wind and hidden from enemies," said Li Junjie, vice chairman of the Changping Battle research institute.<br /><br />The Battle of Changping took place in 260 B.C. between the state of Qin and the state of Zhao during the Warring States Period.<br /><br />The decisive victory of Qin secured its prominence and ultimately allowed Qin to unify China in 221 B.C.<br /><br />Pottery pieces and iron arrowheads were also found near the stoves. "Arrows with iron heads were main weapons of the state of Zhao," said Li.</p>