
People experience a simulated 7.8-magnitude earthquake inside an earthquake simulator at the City of Los Angeles Emergency Operations Center in downtown Los Angeles, California, the United States, Oct. 16, 2025. More than 10 million Californians on Thursday took part in an annual statewide earthquake preparedness drill designed to raise public awareness and strengthen response capabilities for major quakes. (Photo by Qiu Chen/Xinhua)

Staff members at the City of Los Angeles Emergency Operations Center follow instructions during an earthquake drill, practicing the "Drop, Cover, and Hold On" procedure in downtown Los Angeles, California, the United States, Oct. 16, 2025. More than 10 million Californians on Thursday took part in an annual statewide earthquake preparedness drill designed to raise public awareness and strengthen response capabilities for major quakes. (Photo by Qiu Chen/Xinhua)

People experience a simulated 7.8-magnitude earthquake inside an earthquake simulator at the City of Los Angeles Emergency Operations Center in downtown Los Angeles, California, the United States, Oct. 16, 2025. More than 10 million Californians on Thursday took part in an annual statewide earthquake preparedness drill designed to raise public awareness and strengthen response capabilities for major quakes. (Photo by Qiu Chen/Xinhua)

Staff members at the City of Los Angeles Emergency Operations Center follow instructions during an earthquake drill, practicing the "Drop, Cover, and Hold On" procedure in downtown Los Angeles, California, the United States, Oct. 16, 2025. More than 10 million Californians on Thursday took part in an annual statewide earthquake preparedness drill designed to raise public awareness and strengthen response capabilities for major quakes. (Photo by Qiu Chen/Xinhua)

Staff members at the City of Los Angeles Emergency Operations Center follow instructions during an earthquake drill, practicing the "Drop, Cover, and Hold On" procedure in downtown Los Angeles, California, the United States, Oct. 16, 2025. More than 10 million Californians on Thursday took part in an annual statewide earthquake preparedness drill designed to raise public awareness and strengthen response capabilities for major quakes. (Photo by Qiu Chen/Xinhua)

Staff members at the City of Los Angeles Emergency Operations Center follow instructions on how to respond to aftershocks following a major earthquake drill in downtown Los Angeles, California, the United States, Oct. 16, 2025. More than 10 million Californians on Thursday took part in an annual statewide earthquake preparedness drill designed to raise public awareness and strengthen response capabilities for major quakes. (Photo by Qiu Chen/Xinhua)