Nien Cheng, 94, whose memoir "Life and Death in Shanghai" was widely praised as one of the most riveting accounts of the Cultural Revolution, died Nov. 2 of cardiovascular and renal disease at her home in Washington. At a time when China's Communist leader Mao Zedong was trying to purge political rivals and reassert his authority, Mrs. Cheng, the wealthy widow of an oil company executive, was one of untold numbers of professionals who were evicted from their homes by the Red Guard. She was arrested in August 1966 and falsely accused of being a spy. Mrs. Cheng endured 6...