Because the Chiayi-Tainan area hasn't had a earthquake with a magnitude of 7 or more for 30 years, scientists believed that the area was ripe for a big quake, and on October 22 it did indeed experience an earthquake with a magnitude of 6.4. Which fault was the culprit? According to the Central Weather Bureau, it was none other than the Meishan fault, which was created by the 1906 earthquake.
嘉南地區因為三十年未曾爆發強烈地震，一直被學者列為高危險區，十月二十二日果然發生規模六．四的大震，氣象局就將箭頭指向一九○六年嘉義地震中才出現的梅山斷層。