1981 Dawu earthquake
... that the magnitude 6.8 1981 Dawu earthquake in China killed or injured more than 450 people?
... that the <a class="mw-redirect" href="./Richter_magnitude_scale" id="mwFCg" rel="mw:WikiLink" title="Richter magnitude scale">magnitude</a> 6.8 <b id="mwFCk"><a href="./1981_Dawu_earthquake" id="mwFCo" rel="mw:WikiLink" title="1981 Dawu earthquake">1981 Dawu earthquake</a></b> in China killed or injured more than 450 people?