A magnitude 5.7 earthquake struck Xinghai County, a remote area in northwestern China's Qinghai Province. The earthquake was felt on Tuesday at 11:16 AM local time. Just 18 minutes later, a second earthquake with a magnitude of 5.8 hit the same area. The China Earthquake Networks Center reported this information.The agency further stated that several more tremors were felt in the region later in the afternoon. Among them, one earthquake had a magnitude of 5.0.The depth of the earthquakes' origin...