The 1556 Shaanxi earthquake or Hua County earthquake or Jiajing earthquake is the deadliest
earthquake on record, killing approximately 830,000 people. It occurred on the morning of
23 January 1556 in
Shaanxi,
China. More than 97 counties in the provinces of
Shaanxi,
Shanxi,
Henan,
Gansu,
Hebei,
Shandong,
Hubei,
Hunan,
Jiangsu and
Anhui were affected. A 520 mile-wide area was destroyed and in some counties, sixty percent of the population was killed. Most of the population in the area at the time lived in
yaodong, artificial caves in
loess cliffs, many of which collapsed during the catastrophic occurrence, with great loss of life.
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