This book is Hemingway's memories of his life in Paris from 1921 to 1926. Hemingway married his first wife, Hadley Richardson, in September 1921. In December, at the suggestion of Sherwood Anderson, the first famous American writer he met at that time, he and his newlywed wife wrote "The Toronto Star" He lived in Paris as a European correspondent for the newspaper until his separation from Hadley in June 1926 and his marriage to his second wife, Pauline Pfeiffer, in May of the following year. During this period, he and Hadley (although eight years older than him) were newly married. They spent a life in Paris that was poor and simple (sometimes even enduring hunger) but was full of youthful joy and love. In terms of literary creation, according to William ·Boyd wrote "William Boyd: Touching his worst Scars" (The Times Literary Supplement, July 2, 1999). Patrick told us in the preface that this untitled posthumous manuscript has 20 Ten thousand words is obviously not a diary, but half a novel. In fact, it is an actual record of Hemingway and his fourth wife Mary going on a hunting trip to Africa in the early 1950s. The title of this book is taken from a passage in Hemingway's book: "In Africa, a thing is true only in the twilight of dawn, and becomes a lie at noon..." Boyd expressed this to the Heidegger family. The mediocre quality of the manuscript was disapproving, as it was considered detrimental to Hemingway's reputation. The hard-fought married life and its final disillusionment were also the turning point in Hemingway's rise to fame as a diligent young writer who devoted himself to writing. During this period, Hemingway wrote the short story collection "In Our Time" (1925) and the novella "Spring Tide" (1926) and the novel "The Sun Also Rises" (1926). Therefore, when he broke up with Hadley, in order to thank them for their life of struggle together, he titled "The Sun Also Rises" to Hadley and said that royalties from the book would also go to her. In the 1920s, there were a group of exiled British and American writers and artists in Paris, such as Ezra Pound, Thomas Eliot, Scott Fitzgerald, Gertrude Stein, James Joyce, Maddox Ford, Dos Passos, etc., who gathered in Stein's literary salon, or Pound's studio and Sylvia Beach's Shakespeare book Discuss art papers in the company. The young Hemingway received valuable enlightenment and enthusiastic help from Pound (who was eleven years older than Hemingway) and Stein.