Firemen attend a quake rescue drill in Xihai Town of Haibei Tibetan Autonomous Prefecture, northwest China's Qinghai Province, Aug. 7, 2016. More than 400 firemen from Qinghai, Gansu and Shaanxi provinces, and Ningxia Hui Autonomous Region, Xinjiang Uygur Autonomous Region and Tibet Autonomous Region took part in the four-day quake rescue drill starting on Sunday. (Xinhua/Zhang Hongxiang)