Rescuers in China's Tibet region searched for survivors trapped in rubble on Wednesday, a day after a powerful earthquake killed at least 126 people and injured 188 others.
Chinese authorities said more than 400 people had been rescued so far.
Some 30,000 people were also relocated after the earthquake, which destroyed more than 3,600 homes.
Several hundred aftershocks and freezing temperatures in the region complicated rescue efforts.
Chinese leader Xi Jinping has called for a massive rescue effort to minimize losses and resettle those whose homes were damaged. More than 3,000 rescuers have been deployed, state broadcaster CCTV said.
Vice Premier Zhang Guoqing was sent to the region to supervise relief work and the government allocated $13.6 million for the effort. About 6,900 people live in three towns and 27 villages within a 20-kilometer radius of the epicenter on the Chinese side, state media said.
Residents of northeastern Nepal felt the earthquake strongly, but no injuries or damage were reported, according to the country's National Emergency Operations Center.
The area around Mount Everest was deserted in the depths of winter, when even some locals leave to escape the cold.
The earthquake woke residents in Kathmandu, Nepal's capital, about 230 kilometers from the epicenter, with many rushing into the streets.
The U.S. Geological Survey said the quake measured 7.1 magnitude and was relatively shallow, at a depth of about 10 kilometers. The China Earthquake Network Center recorded a magnitude of 6.8. Shallow earthquakes often cause more damage.
The epicenter was in Tingri County, Tibet, where the Indian and Eurasian plates crash into each other and can cause earthquakes powerful enough to change the height of some of the highest peaks in the world. world in the Himalayan mountains.
There have been 10 earthquakes measuring at least 6 magnitude in the area hit by Tuesday's quake in the past century, U.S. officials said.
Parts of this report come from the Associated Press, Agence France-Presse and Reuters.
