Chinese President Xi Jinping visits a survivor from Friday's oil pipeline blast at the affiliated hospital of Qingdao University in Huangdao district, Qingdao, East China's Shandong province, on the afternoon of Nov 24, 2013. Fifty-two people were confirmed dead in the blast. [Photo: gb.cri.cn]

Chinese President Xi Jinping visits a survivor from Friday's oil pipeline blast at the affiliated hospital of Qingdao University in Huangdao district, Qingdao, East China's Shandong province, on the afternoon of Nov 24, 2013. Fifty-two people were confirmed dead in the blast. [Photo: gb.cri.cn]

Chinese President Xi Jinping visits medical staffers at the affiliated hospital of Qingdao University in Huangdao district, where the survivors from Friday's oil pipeline blast are being treated, in Qingdao, East China's Shandong province, on the afternoon of Nov 24, 2013. [Photo: gb.cri.cn]

Xi Jinping listens to work reports on rescue efforts following Friday's oil pipeline blast in Qingdao, East China's Shandong province, on the afternoon of Nov 24, 2013. Fifty-two people were confirmed dead in the blast. [Photo: gb.cri.cn]