Torrential rain and powerful aftershocks on Tuesday hampered efforts to rescue victims of an earthquake in China's southwestern Sichuan Province as the death toll rose to nearly 12,000, although the figure is likely to soar as state media said nearly 19,000 were buried under rubble in one city alone. In quake-hit areas accessible by road from the Sichuan capital Chengdu, the official rescue effort was fast and on a massive scale as the government mobilised all its resources to unblock roads and search for survivors.