SAN FRANCISCODr. Xu Shui Xian Liang, a founding member of the Autonomous Federation of Beijing's Workers in Tiananmen Square who spent 12 years in a labor camp for his involvement in the anti-dictatorship effort during the Cultural Revolution, is ready with your order. "That's one chipotle chicken-filet sandwich, two large regular saladstofu bacon on one, a white-chicken-chili soup, and three low-fat blondies," said the former leader of the students' movement in the Guang Tong province. "Would you like your receipt?" Xu, who was tortured into confessing to stealing state assets in collusion with organized crime shortly before he defected to the U.S. in 1999, is sorry, he will be right back with that Diet Coke.