1969 Yangjiang earthquake
... that both the number and magnitude of foreshocks and aftershocks of the 1969 Yangjiang earthquake were unusually small, considering the size of the mainshock?
... that both the number and magnitude of <a href="./Foreshock" id="mwXg" rel="mw:WikiLink" title="Foreshock">foreshocks</a> and <a href="./Aftershock" id="mwXw" rel="mw:WikiLink" title="Aftershock">aftershocks</a> of the <b id="mwYA"><a href="./1969_Yangjiang_earthquake" id="mwYQ" rel="mw:WikiLink" title="1969 Yangjiang earthquake">1969 Yangjiang earthquake</a></b> were unusually small, considering the size of the mainshock?