YINGXIU, China (AP) - A powerful aftershock knocked out roads and communications in some of the most quake-ravaged parts of central China on Friday, as emergency crews rescued 163 people who had survived up to 100 improbable hours trapped in the ruins.
As Saturday dawned, rescuers were holding out hope of finding more survivors and authorities were preparing for the daunting task of housing and feeding millions left homeless.
r zone. There were about 12 million people living within a 60-mile radius of the epicenter of Wenchuan, according to a study on the potential impact of the quake by Xu Mingbao, a senior researcher at the University of Michigan's China Data Center.

Ever since the massive earthquake in China's Sichuan province, people in the affected region have been updating various websites with news from the ground.
Eyewitness accounts and pictures have also emerged on Sichuan forums and bulletin boards.
is community comment on rumours circulating about the water quality in Sichuan and reassure one another that drinking water is in fact safe.

AMID a national outpouring of grief over Monday's earthquake, China has relaxed its grip - perhaps only briefly - on the internet and some media.
Chinese witnesses to the devastation in Sichuan province have flooded websites with homemade videos, filled chat rooms with commentary and let text messages fly from their mobile phones.
phones with cameras and video filing stuff," Lih said.