In this way, Dong Xianda entered a night school for the workers to learn culture according to Xu Wenwu's arrangement and began to teach people to read and write, and he was respectfully called Teacher Dong by the workers when he was in school. When the day and night classes are not in session, Dong Xianda has to often contact the two underground party members led by him separately to jointly formulate a screening plan for the development of activists and implement it step by step.

Dong Xianda's work arrangements for the Communist Party were very eye-opening, and he finally understood how the Communist Party develops, organizes, and recruits new members from the current work. Dong Xianda admired the Communist Party's approach very much, because the methods used by the Communist Party were extremely effective and penetrated into the soul of the people, which also made him better understand why people would become a firm belief after accepting the ideas of the Communist Party, and would not change even in the face of various difficulties.

During this period, Dong Xianda also met with Lao Xu many times from time to time to report on the current work progress and ideological dynamics of his party group.

But Dong Xianda still didn't know anything about Lao Xu's situation, and he found that the Communist Party surnamed Xu was very shrewd and did not leak when he spoke, and the possibility of leaking information when he unintentionally spoke was almost zero.

This made Dong Xianda very disappointed, because he had been working in Stone Town for a while, but he still didn't know anything about the situation of the underground party organization in Stone Town, and he didn't even know anything about the basic situation and cover identity of Lao Xu, who had a one-line contact with him.

Dong Xianda is a little clueless about this situation, and he can't think of any good way to solve it for the time being, so he can only wait like this, and he doesn't know when his work will make real progress.

At the same time, Yuan Shiheng also felt a lot of pressure, since the last time Deputy Director Xu called back, he had made up his mind to join the Japanese, but because he didn't have any new information in his hands now, the mysterious sleeper agent who was contacted through the dead mailbox had not been heard from, so he could only send notes asking for news to the dead mailbox every once in a while, waiting for the other party's answer.

However, Yan Fuzhi often asked Yuan Shiheng if there was any new news through the dead letter box used for contact, although the two of them had never met since they first met in the pavilion in Hushan Park, but in Yuan Shiheng's opinion, this was Yan Fuzhi constantly putting pressure on him, and he could feel that Yan Fuzhi was getting more and more anxious.

Yuan Shiheng's guess is actually not wrong, and the current pressure on Yan Fuzhi is also not small. Although Yan Fuzhi's strategy for Fujita Yukio's previous inquiries was to squeeze toothpaste, spitting out little by little, but because Yuan Shiheng could not provide Yan Fuzhi with new intelligence information, the pitiful thing in Yan Fuzhi's hand had been squeezed clean by Fujita Yukio, and he had no new situation to report to Fujita Yukio, so Yan Fuzhi would transmit the pressure to Yuan Shiheng's body.

And now the Stone Town Branch of the Secret Service Headquarters has entered the Zuo Tianming era, and Zuo Tianming has been in office for a few months, and he has slowly begun to extend his tentacles to various departments of the Stone Town Branch.

Since Zuo Tianming had the title of director, after being familiar with the basic situation, he divided and wooed the people from various departments of the Stone Town Branch, and gradually found people who were willing to obey his command.

Even though Li Yixin gave Zuo Tianming a big embarrassment in the bail of Zhong Qiangen and his wife last time, many people in the Stone Town branch were not optimistic about him, but there were still a small number of people who were willing to bet on him.

This also made Zuo Tianming's voice in the Stone Town Branch of the Secret Service Headquarters begin to increase, which also brought a certain amount of pressure to Yan Fuzhi. Because Yan Fuzhi knew that if he couldn't continue to show a little performance, Fujita Yukio Dazuo would definitely turn to support Zuo Tianming, and if that happened, he would have a sad life in the future.

On this day, Dong Xianda happened to meet Lao Xu again and went to other places to run errands, and happened to pass by the dead mailbox that Deputy Director Xu told him through a contact person when he was in Shanghai. The address of this dead mailbox was already deeply in his mind, ready to be used at any time.

He suddenly had a flash of inspiration, since he had no way to find out about that Lao Xu's situation, why didn't he use the personnel who contacted him to follow Lao Xu?

It's a good idea! The more Dong Xianda thought about it, the more he felt that this was feasible, although there were still several problems to overcome, but once this was successful, maybe his work would be able to open up the situation. After all, that Lao Xu has already met with him many times, and according to common sense, if the previous joints were normal, Lao Xu would definitely relax his vigilance.

Dong Xianda knows that there are still several problems that need to be solved in order to do so. First of all, the liaison person of Zhongtong did not know Lao Xu, nor did he know Lao Xu's physiognomy characteristics. According to his observation, Lao Xu himself has no obvious physiognomy characteristics, and this kind of physiognomy is too ordinary if it is difficult to be recognized in the crowd.

It's just that this kind of physiognomy is what you should have to really do underground work, which is an innate advantage, and it also fully experiences how thoughtful the Communist Party is in these details. Dong Xianda sometimes even thinks that if this Lao Xu's appearance is outstanding, maybe he will not be arranged to lurk in the Japanese-occupied area, right?

In addition, there is another problem that Dong Xianda does not know whether the contact person he was arranged by Deputy Director Xu in Stone Town is a person, or whether the contact person can use a lot of sleeper agents.

Because if you want to track and monitor Lao Xu, even after knowing Lao Xu's physiognomy and characteristics, you need several people to follow him in turn.

Dong Xianda can imagine that a person like Lao Xu, who has been doing underground work for a long time, is quite sensitive to things that are followed by people behind him.

The skills of tracking and anti-tracking \ getting rid of are also one of the basic skills of every underground worker, if only one person is used for tracking and monitoring, it is easy to be discovered and get rid of by an experienced person like Lao Xu.

The really easy way to succeed in tracking is that the tracker must behave naturally at all times, even if the target stops or looks back at the same time, the tracker must be very calm, and even if he has to walk past the target, he must not follow the target to stop or show any abnormality.

Moreover, the tracking personnel cannot track the target for too long by themselves, and they must be replaced to continue tracking after a period of follow-up, and the tracking action is carried out in a relay manner. At the same time, people who have already followed the trailing target cannot reappear. Only then will the target not be aware that they have been followed.