Of the five images presented, each one provided Ning Zhiheng with a wealth of useful information.

The first image confirmed that Huang Xiansheng's true identity was Japanese.

The second image, if Ning Zhiheng's guess is correct, is of great significance, as it reveals a highly confidential training program for Japanese spies.

It is certain that many Japanese spies, like Huang Xiansheng, trained diligently for years in that mysterious valley before infiltrating China. These individuals were indistinguishable from genuine Chinese citizens; they possessed meticulously prepared identity documents, and some, like Huang Xiansheng, even had living relatives among their Chinese identities to prove their Chinese status. Their secrecy was extremely high, making them virtually undetectable. These hidden pawns will undoubtedly pose a significant threat to China's military and national defense in the years to come.

The third and fourth images further confirmed Huang Xiansheng's true identity.

The most important fifth image directly reveals the lower class he had developed.

Compared to the previous Yuki Yanagida, the information conveyed by the images is much more useful.

Therefore, Ning Zhiheng's conjecture is reasonable. As long as the suspect asks Ning Zhiheng the questions he wants to know before he dies, he can be forced to recall memories related to the questions, and the images that are displayed will be more valuable.

This provides strong evidence for Ning Zhiheng's future ability to peer into other people's memories!

As for this hidden contact, Huang Xiansheng recalled that the two were sitting in a room talking in hushed tones. He couldn't make out the young officer's exact height.

However, when the two were sitting, it was obvious that the young officer was slightly taller than Huang Xiansheng. Huang Xiansheng was 1.70 meters tall, so the young officer was probably between 1.72 and 1.75 meters tall, which was considered quite tall among Chinese people of that era, especially those from the south.

The young officer's shoulder insignia indicated he was a major. It's rare to see someone so young hold such a high rank.

He must be quite educated, otherwise he wouldn't be wearing the rank of major at such a young age. It's even very possible that he was a graduate of the Whampoa Military Academy.

If a graduate of the Whampoa Military Academy has accumulated a few years of seniority, and has powerful connections and influence, it's even easier for them to be promoted to the rank of major.

Like Wei Liangbi, they became majors within just a few years of graduation, and some were even about to become lieutenant colonels. These people were the cream of the crop, the elite of the military.

The exact timeframe in Huang Xiansheng's memory is uncertain; he re-established contact with Japanese spies six years ago. This fragment of memory must be from within the last six years, most likely recent.

In other words, a major could potentially be promoted to lieutenant colonel in the coming years. Of course, this is only a possibility, as promotion to colonel is very difficult.

In addition, this young officer had a fair complexion and was handsome and refined. He did not seem like a military commander who led troops into battle. He was more likely like Huang Xiansheng, a combat staff officer, confidential secretary, or adjutant, a position that had access to classified information.

So now we've narrowed it down to this person; their age is roughly between twenty-five and thirty, not too far off!

Height between 1.72 meters and 1.75 meters!

They have high levels of education, and may even be senior students from the same school. Their military rank is at least major, but could also be lieutenant colonel.

Most of the positions were civilian officials such as staff officers, secretaries, and adjutants.

The investigation should naturally begin with the 11th Division. Huang Xiansheng was the operations staff officer of the 11th Division, and this young officer was very likely his colleague or friend.

Furthermore, he must hold a crucial and important position. Otherwise, he wouldn't risk exposure and easily develop a network of subordinates for someone who offers no help to Mr. Huang in completing his intelligence-gathering mission. This person must be worth the risk!

If the 11th Division cannot find this person, then the search area will have to be expanded further. Priority will be given to officers stationed near Nanjing. If that still doesn't work, the search area will have to be expanded even further.

Finally, the most valuable thing is the portrait with a very high degree of similarity, which is the most direct and accurate evidence.

In conclusion, finding this person shouldn't be too difficult. We should proceed step by step, following these clues and conditions.

Ning Zhiheng believed that it wouldn't take long for him to find the hidden mole.

However, finding it is only the first step in solving the case. With the aforementioned conditions, completing this first step is not difficult.

The difficulty lay in the second step: how to prove that the young officer was indeed the mole. He simply couldn't explain to anyone how he had found the mole.

Based solely on a picture in his mind? No one would believe him if he told them!

He needs to find solid evidence. And this mole, having lost its puppet as its superior, will surely go into hiding.

If he doesn't take any action, Ning Zhiheng will have no way of finding any evidence to arrest and interrogate him.

Therefore, the second step is the most difficult. Although Ning Zhiheng felt a headache coming on, he decided to put it aside for now.

The immediate priority is to find this person. As for the next step? We can only wait and see, and decide as the situation unfolds.

Having considered everything, Ning Zhiheng rolled up the portrait, preparing to take it to the Military Intelligence Bureau tomorrow, just like last time, to have it photographed for future use!

Only then did he realize how hungry he was. He then remembered that he had been alone at home for a long time.

It took me almost six or seven hours to paint just three paintings, and I had already missed lunchtime.

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