Earthquake

I wrote having participated in the revival volunteer of the East Japan great earthquake last time.
I would like to write about the earthquake this time also.
Do you know that the probability that a Tonankai earthquake will occur within four years is 70%?
So, from an East Japan great earthquake, we have to study teachings and have to take measures against the earthquake.
I think this is the best thing which the people who passed away according to the earthquake get surviving us.