A 6.6-magnitude earthquake jolted waters off Taidong County in southeast China’s Taiwan region at 1:41 a.m. BJT on Wednesday, according to the China Earthquake Networks Center (CENC). The epicenter, with a depth of 20 km, was monitored at 23.45 degrees north latitude and 121.55 degrees east longitude. Two minutes later, a 5.7-magnitude earthquake hit Hualien County in the region, said the CENC.