1967年8月17日深夜,湖南长沙的六千知青开始了惊动全国的知青大逃亡。这和湖南的上山下乡运动要早全国4年有关,和湖南1964年的“彻底贯彻阶级路线”有关。“黑五类子弟”1964年9月,长沙市六千初、高中毕业生下放到了湖南偏僻小县江永和零陵等地,其中“黑五类子弟”占85%,且不乏学业优秀者。 Late at night on August 17, 1967, six thousand young people in Changsha, Hunan, started arousing the nation’s great youth runaway. This is related to the ascent of the country’s going to the countryside in Hunan Province for a period of four years as early as the whole nation and the “thorough implementation of the class line” in 1964 in Hunan. “Black five class children ” September 1964, Changsha City, six thousand early, high school graduates sent to remote counties in Hunan Yonghe Lingling and other places, where “black five children ” accounted for 85%, and there is no lack of Academic excellence.