What you need to know
Earthquakes rarely occur in a vacuum, and Hualien's was no exception.
Hualien's Feb. 6, 2018 earthquake toppled several buildings in the city, killed at least five people and injured over 250, but it was only one of a series of tremblors over a series of days.
This animation, compiled from Central Weather Bureau data, shows the series of lesser earthquakes that led up to the big one.
The months leading up to February's quake have been nothing out of the ordinary, with a few minor earthquakes per day at most. The past few days have seen over 200 earthquakes, mostly concentrated around Hualien.