The 1556 Shaanxi earthquake (Chinese: 华县大地震; pinyin: Huáxiàn Dàdìzhèn) or Jiajing earthquake (Chinese: 嘉靖大地震; pinyin: Jiājìng Dàdìzhèn) was a catastrophic earthquake and is also the deadliest earthquake on record, killing approximately 830,000 people.[1] It occurred on the morning of 23 January 1556 in Shaanxi, during the Ming Dynasty. More than 97 counties in the provinces of Shaanxi, Shanxi, Henan, Gansu, Hebei, Shandong, Hubei, Hunan, Jiangsu and Anhui were affected.[2] An 840-kilometre-wide (520 mi) area was destroyed,[3] and in some counties as much as 60% of the population was killed.[4] Most of the population in the area at the time lived in yaodongs, artificial caves in loess cliffs, many of which collapsed with catastrophic loss of life.@Curionic

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