Classical Chinese dance and music, all but obliterated by Mao Zedong’s Cultural Revolution of the 1960s, staged a comeback in 2006 when dissident Chinese artists launched Shen Yun — a magnificent spectacle of orchestra and dancers in traditional costumes. Now in its 10th year, Shen Yun bedazzles with movement and music while reviving a lost world when emperor and commoner strove for harmony and justice.