The document discusses the Great Chinese Famine that occurred from 1958 to 1962. It summarizes a book that uncovered hidden documentation about the famine in government archives. The famine was caused by Mao Zedong's disastrous economic policies and the collectivization of agriculture into communes. This led to the deaths of tens of millions of people from starvation but the events have been suppressed in the Communist Party's history of China.