It tells the story of Paonikolay ostrovsky Kochakin's transformation from an ignorant teenager to a Bolshevik soldier loyal to the revolution, and then to a blind but unyielding novel, becoming a strong steel (referring to his spirit). This is a novel with autobiographical flavor.

Extended data:

1927 At the beginning of this year, 22-year-old ostrovsky was sick in bed because of paralysis, and her eyes were blind. While fighting against the disease, ostrovsky decided to show his face and personal life experience through literary works. He wrote a novella about the growth and heroic battle of kotov cavalry brigade.

But he wrote a novel and asked his wife to send it to his comrades in the kotov Cavalry Brigade in Odessa for advice. Comrades commented on the novel enthusiastically, but the manuscript was lost by the post office on the way back. But it didn't make him depressed. When attending the Correspondence University in Sverdlov, he began to conceive how steel was tempered. He wrote this book in his hospital bed for three years. This story is based on his personal experience.

References:

Baidu Encyclopedia-How steel is tempered