What was the main content of how steel was refined?

" How Steel Was Tempered " was a Soviet novel written by Nikolay Ostrovsky. It mainly told the story of a steel worker's family in the Soviet Union in the 1920s. It depicted the story of the protagonist, Pavel Kochagin, who grew up from an ordinary worker's family to an excellent steel worker and revolutionary under difficult conditions. The novel focuses on the growth of Pavel Kochagin. Through his experiences, it reflects the reality of the Soviet society and the suffering of the people. It also probes into philosophical issues such as individuals and society, tradition and modern times, diligence and laziness. The novel used steel workers as the protagonists to describe how they worked and lived under difficult conditions. Through hard work and self-struggle, they created excellent works, reflecting the fighting spirit and the atmosphere of unity and friendship of the Soviet workers. How Steel was Tempered was widely regarded as a literary work with important historical value and cultural significance. It played an important role in inspiring people's fighting spirit and inspiring literary creation.