magnitude : Mw=7.0
In land earthquakes are known to be extremely difficult to anticipate before, in this case too, there were no signals before, and in addition, two large scale shocks occurred within two days (the major shock before became the foreshock after the second major shock). This is the new type of in land earthquake, although it was suggested to be a dangerous area.
A large amount of people lived just upon the zone of active faults, but the recurrence time is so long that they were not aware of so near future hit. Many lines of learnings are considered as the probability is not zero (even though of low value), and the normalcy bias (I could survive even though in an unlucky situation) should not be avoided. We had, in an active hazardous areas, better to be always prepared.