A survivor is seen among the rubble of a collapsed building at the earthquake-affected Beichuan County of Mianyang City, Sichuan province May 13, 2008. China said on Tuesday 18,645 people were buried under debris in the city of Mianyang, neighbouring Wenchuan county, the epicentre of Monday’s devastating earthquake. Some 3,629 people had been confirmed dead. REUTERS/Stringer (CHINA). CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA.