There were a few novels in which the main character became a spy at the beginning of the story. Among them were " I Want to Be Undercover at the Beginning " and " I Want to Be Undercover at the Beginning, Forcing Me to flip the Table." Both novels began with the protagonist being forced to become a spy and unfolded a series of exciting stories. In addition," I'm in Hong Kong, Starting from the Arrest of Chen Haonan " was also a novel that started as a spy. Other related novels might require further research.

I recommend 'Spy Web', a military spy novel written by Deep Blue Country. The main character was a small translator, a non-transmigrator. He grew up in the Japanese intelligence agency and dealt with various parties. He was a three-way spy who passed information and sabotaged between the Juntong, the underground organization of our party, and the Japanese intelligence agencies. The plot had many twists and turns, and the story was fast and rigorous. It had the characteristics of the era and the region. Although there were some small flaws, they couldn't hide the beauty. " The King of Elden, Driving the Motherland Crazy at the Beginning " was not bad either. It was a light novel written by Sweet Orange Soda. The main character traveled through the world of comics for the second time and woke up in the castle of the batman. There were many interesting things to watch, even if one had not played the ring of Alden. There was also the movie," Say that the technology side is good, the rabbits will soar across the country???". An urban novel written by a noob. Su Yun traveled across the Blue Planet, awakened the Heaven Forging System, and used refining techniques to create technology to lead the people to ascend. All kinds of magical equipment were very interesting. " Hong Kong: Infernal Affairs " was a novel written by Xiao Niu very mischievously. The main character transmigrated to become Han Chen's spy and worked hard in the Hong Kong comprehensive world. There were no big cheats, the plot was compact, and the logic was clear. The main character's two businesses were online, and it was a non-traditional Hong Kong comprehensive novel. " Western Movie: I Am a Serious Sinner Hunter " was an urban novel written by Apple, Orange, and Latiao. It was set in the era of superpowers. The male lead, Lin Kun, was very unique. There were also characters like the female lead, Jelena Yeka. The story was also very exciting. Read the manga "Hidden for a Hundred Days, I Married the Female Empress of the Enemy Country" by clicking on the link below.
The main character of "Spies" was Xu Le. He was an ordinary citizen of the Federation Star System. He had experienced the death of his family and the tragic experience of child labor since he was young. With Feng Yu's help, he began to work with the orphans to return to the Federation. Xu Le was a tenacious and brave person. He had experienced countless hardships as he grew up, but he had always maintained his kind and righteous qualities. He had a talent for mechanics and believed that people should be punished when they made mistakes. In the story, he had a series of adventures and emotional entanglements with Shi Qinghai, Zhang Xiaomeng, Minami-san, and Shang Qiu. The main character of "Spike", Xu Le, was a good man who fought for fairness and justice. His story was fascinating, allowing readers to experience a brand new sci-fi experience.
There were a few short stories that could be recommended, including Conan: The Sixth Person of the Police Academy, Eroding Bones and Spoiling: Young Master Yun's Undercover Wife, and The Unknown Story. These novels all used the male protagonist as an undercover police officer as the theme. Through the exciting plot and the development of suspense, they showed the growth and challenges of the male protagonist in the undercover mission. In addition, there were also short undercover police novels such as Deception and There's a Fool Called Happy.