In this photo released by Xinhua News Agency, a rescuer uses a sniffer dog to search for survivors at a collapsed houses following a massive earthquake in Dahejia Township of Jishishan Bao'an, Dongxiang, Salar Autonomous County in Linxia Hui Autonomous Prefecture, northwest China's Gansu Province, Tuesday, Dec. 19, 2023. A strong overnight earthquake rattled a mountainous region of northwestern China, authorities said Tuesday, destroying homes, leaving residents out in a below-freezing winter night and killing more than hundred people in the nation's deadliest quake in nine years. (Zhang Ling/Xinhua via AP)