The main content of each chapter is summarized.

How Steel Was Tempered was a Soviet novel about the growth of the protagonist, Pavel Kochagin, in the steel industry of the Soviet Union. The novel was divided into four parts: From 1918 to 1921, Kochagin joined the Soviet army during the First World War and played an important role in the war. He learned many military skills during the war and also realized the importance of the Soviet Union's industrialization. In the second part, from 1921 to 1924, Kochagin became a steel worker in the Soviet Union and began his career in the steel industry. In this position, Kochagin showed excellent work ability and leadership skills. He led his colleagues to overcome difficulties and improve production efficiency. In the third part, from 1924 to 1927, Kochagin became a leader of the Soviet Steel workers 'party. He played an important role in organizing the workers 'movement and promoting the industrialization of the Soviet Union. At the same time, he also faced pressure and criticism from his superiors, but he always insisted on his beliefs. The fourth part, from 1927 to 1936, was active in the political arena of the Soviet Union. He actively participated in political activities against corruption and dictatorship. He also wrote a lot of articles and books about the steel industry and the Soviet Union's industrialization, making an important contribution to the development of the Soviet Union's industrialization. At the end of the novel, Kochagin recalled his experience in the process of the Soviet Union's industrialization, emphasized the importance of unity, struggle, and self-sacrifice, and expressed his love for the Soviet Union and his blessings for the development of China.