 BC</td>
<td>284 BC</td>
<td><sup id="cite_ref-qi_5-0" class="reference"><a href="#cite_note-qi-5"><span>[</span>5<span>]</span></a></sup></td>
</tr>
<tr>
<td><a href="//en.wikipedia.org/wiki/Qin_(state)" title="Qin (state)">Qin</a></td>
<td>Sovereign</td>
<td><a href="//en.wikipedia.org/wiki/King_Zhaoxiang_of_Qin" title="King Zhaoxiang of Qin">Zhaoxiang</a></td>
<td><a href="//en.wikipedia.org/wiki/Qin_(state)#Rulers" title="Qin (state)">King</a></td>
<td>Ying</td>
<td>306 BC</td>
<td>251 BC</td>
<td><sup 