--- BusinessWeek porträtiert Pekings "Eiserne Lady", Vize-Premier Wu Yi: She started out as a deputy mayor of Beijing, and today serves as a Vice-Premier and top trade negotiator -- the only woman in China's 24-member ruling Politburo. Key to her rise, according to those who know her: bull-headed stubbornness leavened with a quick wit and a directness that's rare at the pinnacle of Beijing power. "To her friends, she is very nice and enthusiastic," says Lin Shipei, a student adviser from Wu's university days who has kept in touch with her. "To her opponents, she is hard like iron." That iron skin will serve Wu well as she prepares for her latest challenge. In mid-April, Wu is scheduled to lead trade talks with White House officials puffed up with election-year ire over lost jobs. The annual meeting of the U.S.-China Joint Commission on Commerce & Trade, once handled by lower-level officials, has been upgraded to the ministerial level, so she'll hold talks with Commerce Secretary Donald L. Evans and U.S. Trade Representative Robert B. Zoellick. Ein langer, aber die Streitfragen zwischen China und den USA gut ausleuchtender Bericht.