This is Selected topic 4 of the book entitled "The Revival of China". The full book is about the revival of China in the 20th century and the first decade of the 21st century. This topic is about what happened before, during and after the great leap forward. It covers the premature advance, the anti premature advance and the anti anti premature advance before the great leap forward; the process of the great leap forward and the great famine caused by it, and downing with PENG De-huai by MAO Ze-dong in the Lushan meeting; and, after the great leap forward and famine, the meeting of seven thousands officials, policy adjustment by LIU Shao-qi to recover the economy, and the differences between MAO and LIU. The book is written in Chinese.