China holding 3 days of mourning for quake victims

Worries about possible flooding had sent thousands of people fleeing the day before.

Also in the quake area, three giant pandas were missing from the Wolong Nature Reserve for the endangered animals. Five staff members were killed in the quake, forestry spokesman Cao Qingyao told Xinhua. The 60 other giant pandas at the were safe.

President Hu Jintao continued to tour the destruction for a third day and was surrounded by wailing women at a camp for homeless survivors in Yinghua.

"I know you lost family and property," Hu was quoted by state media as saying. "I share the pain with you. We will try every effort to save your people once there is the slightest hope and possibility."

China also raised the magnitude of last Monday's quake, to 8.0 from 7.8, though it did not give reasons for the reassessment and the U.S. Geological Survey kept its 7.9 measure. A magnitude-8 quake has the equivalent energy of 790 nuclear bombs, according to the U.S. Geological Survey.

Foreign aid continued to arrive, including two U.S. Air Force cargo planes loaded with tents, lanterns and 15,000 meals.

A vast, impromptu humanitarian operation has sprung up among Chinese, with thousands flooding into Sichuan in cars loaded with instant noodles, blankets, clothes and whatever else they could carry.

Chinese people, organizations and companies donated around $1.1 billion for quake relief in the first week after the disaster, Xinhua said.

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Associated Press writers Tini Tran in Muyu and Henry Sanderson in Beijing contributed to this report.