Here’s the Taiwan government’s national site for earthhquakes (In English).
They’re so common it’s the weather site. http://www.cwb.gov.tw/V7e/earthquake/quake_index.htm
Usually when you look on that page there are 10 - 12 earthquakes shown, ranging between 2 - 4 magnitude, spread over three to four weeks and located all up and down the east coast of the island. This extremely dense cluster of quakes, coming in such rapid succession is very unusual.
I hope that last night’s 6.4 is the largest one, and that all these little quakes are letting the energy out that the earth has stored up! We definitely felt it here in Taipei, though the government alert on my phone is what woke me up and allowed me to feel the shaking!
WOW! Just noted your handle.
The only tremor I have ever experienced was the Virginia ‘burp’ in 2011.
Please take care and stay safe.