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Jyutping haa6 fong3 cing1 nin4
Pinyin xià fàng qīng nián

Definitions (Wiktionary)
  1. noun, historical
    The "sent-down", "educated", or "rusticated" youth, the zhiqing: the young Chinese sent from urban areas to the work in poor villages during the PRC's Down to the Countryside Movement (上山下鄉運動)
    (syn.) 知识青年, 知青, 知識青年