Zhao Ziliang made a phone call and invited Ning Zhiheng to his office, placing the documents in his hand in front of him.
"The situation at the front is becoming increasingly tense. Both sides are deploying troops and war is imminent. Yesterday, the Director went to Shanghai to oversee intelligence work. Before he left, he specifically instructed us to speed up the investigation of Japanese spies. However, I still have no clue about the case these past few days. It seems that counter-espionage is still something you need to do. I won't force myself to take on the task."
Zhao Ziliang has been at a loss for how to proceed with the case these past few days. He knows that to deal with Japanese spies, he still needs to find Ning Zhiheng, an expert.
This was exactly what Ning Zhiheng had expected. Without any politeness or refusal, he took the documents and said with a smile, "These are trivial matters that you, Section Chief, need to trouble yourself with. I will definitely arrest the Japanese spy and bring him to justice in a short time!"
Zhao Ziliang laughed heartily, pointing at Ning Zhiheng and jokingly saying, "You're the only one in the entire Military Intelligence Bureau who dares to say something like that, but it's true!"
He knew that his trusted lieutenant possessed unparalleled skills in investigation, which was the foundation of his current position in the Military Intelligence Investigation Department.
He continued, "Now that the Chief is not here, the work of the Military Intelligence Department is being overseen by Deputy Chief Huang. He is your backer, so you don't need to worry too much. Besides, he usually doesn't get involved in anything, so I will handle the specific work. The Intelligence Section is no longer as prestigious as it used to be; it's now just an assistant to us. If you want to call on someone, just ask directly. Don't give them any face."
His words exuded arrogance, clearly indicating that his mindset had changed drastically and was far different from what it was a year ago.
Ning Zhiheng returned to his office, opened the documents, and carefully reviewed them.
With the start of the great battle fast approaching, Ning Zhiheng, though unwilling to get involved, felt it was his duty as an intelligence officer to do his best to strike at Japanese intelligence to the greatest extent possible and eliminate these potential threats before evacuating Nanjing, thus contributing his own efforts.
After carefully studying the documents in his hand, Ning Zhiheng leaned back in his chair and closed his eyes to ponder.
This document is a recording of surveillance conversations provided by the Telecommunications Section. The Telecommunications Section of the Military Intelligence Investigation Department is the most advanced telecommunications department in China to date. It is able to monitor the signals and radio waves of various radio stations in all urban areas of Nanjing and record the data at any time for future reference.
As the capital of the Republic of China, Nanjing had numerous departments and businesses, and countless military and commercial radio stations, making it extremely difficult to manage. Even just monitoring the radio waves was a challenging task.
However, this situation was alleviated with the expansion of the Military Intelligence Investigation Bureau. The Director was most concerned about the telecommunications sector. Several years ago, he recruited outstanding mathematicians and telecommunications talents to form a decryption team. The expansion a few months ago also resulted in the purchase of a large number of advanced telecommunications equipment, and the telecommunications department was doubled in size. Therefore, the control over radio stations in Nanjing was greatly increased.
In the following years, with continuous investment, the telecommunications department of the Military Intelligence Investigation Bureau developed rapidly and soon surpassed Japan. This made great contributions in the later stages of the War of Resistance Against Japan, among which Ning Zhiheng's capture of many encrypted codebooks played a role.
This record clearly indicates that the four radio waves that suddenly appeared in four areas of Nanjing city, and the frequency and method of their transmission, were the same as the old radio station that had disappeared for three months. Analyzing the timeline, they were indeed the most suspicious targets.
But that's all the telecommunications department can do. They can't pinpoint the exact location, and the transmission and listening times are too short to detect any patterns.
In addition, Nanjing has a population of one million, and even a small urban area can easily have tens of thousands of people, which greatly increases the difficulty of the investigation. In a short period of time, Zhao Ziliang was also at a loss and simply handed it over to Ning Zhiheng.
Ning Zhiheng opened his eyes, picked up the phone, and called Yu Cheng from the intelligence department.
"Old Yu, are you free now? Sure, come over here for a bit!"
Yu Cheng naturally dared not neglect Ning Zhiheng's call. In the Military Intelligence Investigation Department, apart from a few senior high-ranking officials, Ning Zhiheng was the most difficult character to deal with. Even now, the ferocious face of Ning Zhiheng when he suddenly struck a killer in the interrogation room still made Yu Cheng, who was present at the scene, feel lingering fear.
Before long, Yu Cheng arrived at Ning Zhiheng's office.
"Zhiheng, is there something you need to talk to me about?" Yu Cheng asked, his face beaming as he entered the room.
Ning Zhiheng got up and invited him to sit on the sofa, then handed him the documents in his hand.
Yu Cheng quickly opened the file and carefully reviewed it. Then he asked Ning Zhiheng, "This is a recording of radio wave monitoring. What do you want to know? I'll tell you everything I know!"
Ning Zhiheng then asked, "The Telecommunications Department mentioned in the document that they were very familiar with the frequency and methods of one of the radio waves. At the time, it was a case that your Intelligence Department was handling, and the object of your investigation was this radio wave frequency."
It was initially near Zhonghua Gate in the south of the city, but the matter was later dropped. The radio wave disappeared for a while, then reappeared in the Heilang neighborhood of the northern district. It disappeared again three months ago, and now it has suddenly reappeared, this time near Yanliaofang.
At this point, Ning Zhiheng looked at Yu Cheng and asked in a calm tone, "The record states that you were in charge of this case, Lao Yu. Can you tell me about the details?"
Yu Cheng then realized why Ning Zhiheng had summoned him; it turned out he wanted to ask about this matter. He couldn't help but smile wryly and recounted the whole story.
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