Tell me more about this miraculous Russian concrete, just understand as a Kiwi I have been through over 100,000+ earth quakes in my life.
What's your experience in them? Where I live anything under a 6 most people don't even blink, the most reaction you will get is.. Ohh did you feel that? Its fun to watch the tourist freak.
https://www.geonet.org.nz/earthquake