A 6.8-magnitude earthquake shook Taiwan on Sunday, a day after a slightly weaker quake rocked the island, according to the Central Weather Bureau. According to the bureau, Sunday’s quake struck at 2.44 pm (0644 GMT) at a depth of 7 kilometres. The epicentre was about 42.7 kilometres north of Taitung County in eastern Taiwan. The news comes after dozens of tremors shook the island starting late Saturday. In Hualien County, a 3-storey supermarket building collapsed. Rescuers including firemen and soldiers were sent to the site to rescue those trapped inside the building. At least one person was …