sentences:  His novel "How the Steel Was Tempered" (1932) has been among the most successful works of Russian literature, with tens of millions of copies printed in many languages around the world.The book is a fictionalized autobiography of Ostrovsky's life, who had a difficult working-class childhood and became a Komsomol member in July 1919 and went to the front as a volunteer.The novel's protagonist, Pavel Korchagin, represented the "young hero" of Russian literature