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Ding Songling, codenamed File Enemy Knife, is an underground member of the Communist Party of China. He lurks in the Xishan City Juntong Special Agent Station and accidentally ends up in Songling Prison while performing an undercover mission. On the first day of the public trial, Songling fell, and Ding Songling and the two traitors were rescued by the Japanese army. Ding Songling witnessed the crimes of the Japanese aggressors and was so distraught that he stayed in the wolf den and fought secretly with the Japanese army alone. He was like an indestructible rasp knife, which occasionally made the Japanese soldiers drip with blood... Two years later, on the eve of the counterattack, he successfully organized the "Empty City Operation" and won the first victory in the Southwest Anti-Japanese War to regain the lost territory. The name of the rasp has since become famous in the southwest.

Describes the story of several generations working hard and starting a business to escape poverty and become rich.

A record of young people's insights into urban entrepreneurship and their hard work and never forgetting their original aspirations.