Chinese Armed policemen carry out rescue operation at the site of a mud-rock flow in Kangding County, southwest China's Sichuan Province, July 24, 2009. Rainstorm hit Kangding around 1 a.m. Thursday, triggering a mud-rock flow at around 3 a.m. near national highway 211. Four people have been confirmed dead and at least 50 others were missing in the mud-rock flow, authorities said Thursday.(Xinhua/Jiang Hongjing)