Lei Feng was not widely known until after his death. In 1963, "Lei Feng's Diary" was first presented to the public by Lin Biao in the first of many "Learn from Lei Feng" campaigns. The diary was full of accounts of Lei's admiration for Mao Zedong, his selfless deeds, and his desire to foment revolutionary spirit. Lin's use of Lei's diary was part of a larger effort to improve Mao's image, which had suffered after the Great Leap Forward. Scholars generally believe that the diary was forged by Party officials under Lin's direction.