Some 400 people have died and thousands are feared injured after a magnitude-6.9 quake hit western China's Qinghai province, officials say.
The powerful tremor struck remote Yushu county, 800km (500 miles) south-west of the provincial capital Xining, at 0749 (2349 GMT), at a shallow depth of 10km.
Most of the buildings in the worst-hit town of Jiegu were wrecked, and landslides have cut off roads.
Police said hundreds of survivors had already been pulled from the rubble.
And at least one aid flight had been able to land at the local airport, according to officials.
Senior Yushu official Huang Liming announced the latest death toll of 400, as the extent of the damage became clearer.
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