3058117 Students led into the fields for a lesson in agriculture, late 1960s (photo); Private Collection; (add.info.: The Great Proletarian Cultural Revolution (1966-76) was a movement lead by Mao. Chienton People\'s Commune, Hsintsai county, Hunan province lead students from Chengchuang Agricultural Labour School.); Universal History Archive/UIG; out of copyright.