Firefighters use life-detection devices to scour the rubble of a collapsed building in the quake-hit Yushu, northwest China's Qinghai province on April 18, 2010. The last five days has seen a great ongoing effort by rescue teams consisting of people from all walks of life, ranging from firefighters to police officers, from professional rescuers to volunteers. Rescuers have been working around the clock at the quake zone in the hope of saving more lives. [Photo/Xinhua]