Earthquake strikes back in Taiwan!Same day same magnitude same place just skips a year !

I thought it was strange a 6.4 magnitude earthquake strikes Taiwan on 06 Feb 2018 after a 6.4 hits Taiwan in 06 Feb 2016

Source: https://en.wikipedia.org/wiki/2018_Hualien_earthquake

Source: https://en.wikipedia.org/wiki/2016_Taiwan_earthquake

More links:
https://www.channelnewsasia.com/news/asiapacific/taiwan-quake-kills-at-least-13-fells-apartment-block-8186480
https://earthquake.usgs.gov/earthquakes/eventpage/us20004y6h#executive
https://geographic.org/earthquakes/real_time_details.php?id=us20004y6h&lat=22.8711&lon=120.6678
http://triblive.com/usworld/world/13271344-74/fatal-quake-in-taiwan-leaves-a-hotel-tilting-over-a-street
https://www.washingtonpost.com/world/asia_pacific/the-us-geological-survey-says-a-magnitude-64-earthquake-has-struck-near-the-coast-of-taiwan/2018/02/06/756d58d2-0b61-11e8-998c-96deb18cca19_story.html?utm_term=.4af7c4b318db
http://nbcmontana.com/news/nation-world/strong-earthquake-rattles-east-coast-of-taiwan-02-06-2018