Earthquake prediction was popular between 1966–1976, which overlapped with the Cultural Revolution. This reached its height with the successful prediction of the 1975 Haicheng earthquake. This earthquake had a prominent series of fore-shocks and authorities who were eager to issue a warning. However, very few earthquakes have both these criteria. The unpredictable and devastating Tangshan earthquake in 1976 led to a reduction of the popularity of earthquake prediction in China.