An Qingxu
... that An Qingxu killed his father An Lushan, the Emperor of Yan, because he feared that his father would kill him and make his brother crown prince?
... that <b id="mwFcU"><a href="./An_Qingxu" id="mwFcY" rel="mw:WikiLink" title="An Qingxu">An Qingxu</a></b> killed his father <a href="./An_Lushan" id="mwFcc" rel="mw:WikiLink" title="An Lushan">An Lushan</a>, the Emperor of <a class="mw-redirect" href="./Yan_(Anshi)" id="mwFcg" rel="mw:WikiLink" title="Yan (Anshi)">Yan</a>, because he feared that his father would kill him and make his brother <a href="./Crown_prince" id="mwFck" rel="mw:WikiLink" title="Crown prince">crown prince</a>?