There's always a lot of 'seismic activity' in Taiwan, but 'there's been a lot of seismic activity in Taiwan' recently

Mostly around the big fault running up the central range

The biggest was only 4.9 but there's been some kind of awakening there as that area has been relatively quiet since the 921 uprising

http://www.cwb.gov.tw/V7e/earthquake/quake_index.htm