Mu Lai Chao watched the building collapse on her son.
In an instant the ground had shaken and the smooth walls had buckled and now there were only piles of concrete trapping hundreds of schoolchildren. Her husband ran to the rubble, pulling the injured out.
"He saw them buried," she told ABC News in Chongqing. "One was bleeding heavily from the leg."
Her son survived but four of his classmates were killed, part of the deadly toll from China's worst natural disaster in three decades,...Full Story