In the summer of that year, the streets of Shanghai were still permeated with the smoke of war and a tense atmosphere. The delicate relationship between the two parties in the Liberated Area became increasingly complex amidst the ever-changing situation. At this time, Lin Feng's Underground Party Organization assigned him an extremely arduous and dangerous mission: to infiltrate the Nationalist Party's confidential archives and steal a document crucial to the military situation in the Liberated Area. This document reportedly detailed the Kuomintang Army's recent strategic deployments, troop allocations, and weapon upgrades aimed at the American Side. If it fell into the hands of their party, it would buy valuable time for the American Side to respond and turn the tide of the situation.
Lin Feng was acutely aware of the gravity of this mission and wasted no time in preparing meticulously. Drawing on years of experience in enemy territory, he transformed himself into a candidate for a position as a clean-background file clerk. Through connections established by the Underground Party, he successfully entered the recruitment process for the Nationalist Party's confidential archives. During the interview, Lin Feng remained calm and composed, skillfully dodging the interviewer's trick questions, earning their trust, and securing a position as a temporary assistant responsible for organizing daily documents.
Upon entering the archives, Lin Feng immediately felt an invisible pressure. This was a secret area located deep within the Kuomintang Army's headquarters, surrounded by thick walls that seemed to block any external prying eyes. The dimly lit corridor was patrolled by armed guards every few steps, their cold gazes like hawk eyes that missed no suspicious movement. Inside the archives, surveillance cameras were densely installed, watching every corner like hidden ghosts.
To successfully complete his mission, Lin Feng forced himself to calm down quickly and began observing everything around him discreetly. He pretended to be busy each day, weaving between rows of tall filing cabinets while seemingly organizing mountains of documents, all the while quietly noting personnel movements, surveillance coverage, and patrol patterns.
After several days of careful observation, Lin Feng finally grasped some key details. He discovered that there was a brief gap during shift changes in the archives' personnel schedule—approximately every four hours—when there would be about five minutes of downtime between morning and afternoon shifts and between afternoon and evening shifts. During these five minutes, personnel information verification took place in the monitoring room, and patrol teams adjusted their positions; at this time, surveillance footage would briefly switch to black screens, causing guards' attention to wane. This would be his best opportunity to approach the safe containing confidential documents.
However, knowing when to act was far from enough; the safe itself posed an insurmountable challenge. It was a state-of-the-art safe imported from America, constructed entirely from high-strength alloy steel. Its combination lock utilized advanced encryption technology of that era; not only did it require entering a correct numerical code but also needed a specially designed key to open it. Furthermore, pressure sensors were installed on the floor around the safe; if anyone attempted to get too close or tamper with it, alarms would instantly sound throughout the entire headquarters.
Lin Feng was not deterred by these difficulties. Utilizing his spare time and drawing on his deep understanding of mechanics along with previous experiences with similar safes encountered by the American Side, he began researching ways to crack it. He cleverly borrowed books on safe construction and cryptography under pretexts of studying in a corner of the archives while secretly probing for weaknesses in the safe.
Finally, one late night when clouds obscured the moonlight outside and the city fell into silence, Lin Feng arrived at his critical moment. It was during a shift change between afternoon and evening when he pretended to organize his last few documents while others gradually left the archives for their new shifts.
As soon as the last colleague's figure disappeared through the door, Lin Feng sprang into action. He quickly darted into a blind spot of surveillance cameras and pulled out a specially prepared metal strip from his sleeve. He carefully inserted it into the gap between the floor and wall where they met, precisely cutting off power to the pressure sensor device to ensure he wouldn’t trigger any alarms as he approached the safe.
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