Many survivors are still trembling in the chilly temperatures and rescuers will have another sleepless night as the second night after the fatal quake approaches in the small town in northwest China's Qinghai Province.

Thousands of rescuers are fighting against altitude sickness, chilly weather, strong winds and frequent aftershocks Thursday to dig through rubble and reach survivors of the 7.1 magnitude earthquake that has left 760 dead after it struck the Tibetan Autonomous Prefecture of Yushu in southern Qinghai Province early on Wednesday.