To summarize the main content of the novel How Steel Was Tempered

" How Steel Was Tempered " was a revolutionary novel written by Ostrovsky. It mainly told the story of a young Russian worker in the 19th century, Alexander Khrushchev, who grew up to be an outstanding revolutionary and military strategist through struggle and self-redemption in a difficult environment. The main story of the novel is about the growth of the protagonist, Pavel Kochagin. It shows his experiences and struggles in different environments such as factories, armies, and schools in Russia during the industrial era. From an ordinary steel worker, Kochagin had experienced the tempering of the workers 'movement, the revolutionary war, the Soviet Union's industrialization, and other historical events, and gradually grew into a thoughtful and responsible revolutionary. The novel also involved politics, military, culture and other aspects of the content to show the real problems and challenges faced by people of different classes and identities in the background of Russia's industrial era. At the same time, the novel also reveals the dark side of the Soviet society and the existing problems such as political corruption, economic backwardness, human rights issues, etc., reflecting the author's deep thinking and reflection on the Soviet society and history. " How Steel Was Tempered " was a literary work full of positive energy and inspiring spirit. Through the protagonist's struggle, it showed the fearless fighting spirit and firm belief of the revolutionary. It was of great significance to inspire people's morale and promote social progress.