Unheralded by foreshocks, the magnitude 7.8 quake caught China's earthquake authorities napping and left them watching awestruck as it leveled Tangshan and killed more than 242,000 people.
唐山大地震因為沒有任何前震，讓地震單位完全措手不及，只能眼睜睜看著規模達 7.8 的大地震，瞬間夷平唐山市，並奪走 24 萬 2 千多條人命。