http://www.facts.org.cn/Reports/China/201212/t163146.htm Monday, 17 December, 2012, 12:00am Stephen Chen binglin.chen@scmp.com Authorities on the mainland have stepped up their crackdown on a radical religious sect promising salvation to people who give up their belongings before "doomsday" strikes on Friday. Police in Xining, capital of the northwestern province of Qinghai, have detained se…