And this kind of tracking method requires a large number of personnel, and if Deputy Director Xu does not have so many available people in the hands of the liaison person in Stone Town, then it is impossible to succeed in this kind of tracking.
In fact, for the first problem, Dong Xianda thinks it is very easy to solve.
He can completely notify his contact person in advance when he meets Lao Xu in advance, and tell the contact person the time, place and approximate age of Lao Xu, so that the contact person can determine the target first.
But if there is only one person in contact and no other helpers, Dong Xianda is unwilling to take risks, because he knows that once Lao Xu finds out that he is being followed, he will inevitably have suspicions about him, which is a situation that Dong Xianda absolutely does not want to see.
After thinking about it, Dong Xianda decided to use the dead mailbox used for communication to send a question to his contact, asking if this Zhongtong contact person in Stone Town had any helpers and how many helpers he could use.
The day after Dong Xianda put this question into the dead mailbox and marked it, Yuan Shiheng finally found out that there was new information in the dead mailbox.
This made Yuan Shiheng's heart ecstatic, and he thought that the mysterious sleeper agent in the past had finally safely escaped the investigation within the Communist Party, and now he was active again.
And now this mysterious sleeper agent is his lifesaver or dependence.
However, when he retrieved the note from the dead mailbox from the mysterious sleeper agent, he was disappointed that instead of providing information about the Communist Party as he had hoped, he asked a somewhat inexplicable question, asking him if he was alone or had a useful helper in Stone Town.
This made Yuan Shiheng a little puzzled, because this mysterious agent had never asked him questions before, and only silently provided intelligence information about the underground organization of the Communist Party in Stone Town.
And Yuan Shiheng also found a problem that puzzled him even more, the handwriting on the note left by the other party this time was very different from the handwriting on the note left before.
Yuan Shiheng was very worried that the previous mysterious agent had been screened out by the Communist Party and had already given the address of this dead mailbox, and if the new handwriting note that appeared now was deliberately left by the Communist Party to deal with the secret service organization that sent the sleeper agent, then he would definitely be threatened by the Communist Party as a liaison with the sleeper agent.
With this in mind, Yuan Shiheng did not immediately ask questions about the actions answered, but reported the anomaly to Deputy Director Xu in Chongqing by telegram.
He wanted to see what Deputy Director Xu would say about such a situation, so that he could decide what he should do next.
After receiving Yuan Shiheng's report telegram, Deputy Director Xu did not tell Yuan Shiheng the fact that the current sleeper agent in Stone Town had been replaced, but called back to instruct Yuan Shiheng that he must unconditionally assist the sleeper agent who was lurking inside the Communist Party, and pointed out that the sleeper agent is now safe and has not been found out by the Communist Party.
Deputy Director Xu actually felt strange that Dong Xianda asked Yuan Shiheng such a question, but he trusted Dong Xianda very much and thought that Dong Xianda must have asked such a very important reason, and he didn't know this reason.
But this did not prevent him from giving instructions to Yuan Shiheng to assist Dong Xianda, in his opinion, Dong Xianda was an agent lurking alone in the Communist Party, and many things could only think and act on his own without help, so Yuan Shiheng could only assist and could not ignore it.
As for Yuan Shiheng, Deputy Director Xu is not so relieved and trusting now, so he will send Li Yue to Stone Town to prepare to take over part of Yuan Shiheng's work.
Yuan Shiheng was greatly relieved after receiving a call back from Deputy Director Xu, he felt that God had not abandoned him, and now when Yan Fuzhi was putting more and more pressure on him, he finally waited for a good news, that the sleeper agent actually escaped the internal investigation of the Communist Party, so that he once again had a stable source of information.
This also gave him the ability to cooperate with the Japanese in the future, and he was of course very happy.
As for whether Deputy Director Xu said the truth, Yuan Shiheng didn't want to dig deeper, anyway, as long as there was a source, he didn't want to care about the rest.
It's not that he wasn't worried that Deputy Director Xu would betray him to the Communist Party, because he knew that the blood feud between Deputy Director Xu and the Communist Party would never be resolved, and even if Deputy Director Xu intended to cooperate with the underground party of the Communist Party, it would be difficult for the Communist Party to believe Deputy Director Xu or not.
After Yuan Shiheng made up his mind, he quickly sent a message back to the dead mailbox, clearly stating that he had helpers, and there were quite a few, and he needed the other party to explain what he needed helpers to do, so he could arrange it.
After Dong Xianda saw Yuan Shiheng's reply from the dead mailbox again, he was also very excited, he could finally show his skills!
So he wrote a note again and put it in the dead mailbox, telling Yuan Shiheng that he needed to follow his plan to track down an important person surnamed Xu from the underground party organization in Stone Town, and the place and time of this person surnamed Xu will be notified separately.
At the same time, Dong Xianda pointed out to Yuan Shiheng that when tracking this person surnamed Xu, the followers need to be particularly cautious, and would rather lose it than let the target person be aware of it.
The ultimate goal of tracking this surnamed Xu is to find out the person's current cover identity and activity patterns, and to pay attention to what abnormal behavior the person usually has and who to meet secretly.
If there are people who have secretly met with this surnamed Xu, these people also need to be tracked and monitored, so as to find out the members and composition of the entire underground party in Stone Town.
After Yuan Shiheng saw Dong Xianda's request again, he also became excited, because he was already keenly aware that the intelligence information sent by the mysterious agent this time was very valuable, and it was very likely that he would thoroughly understand the various situations of the Communist Party's underground organization in Stone Town.
There is only one point that makes Yuan Shiheng a little difficult, if the surname Xu is really an important figure in the underground organization of the Communist Party in Stone Town, then he must have a lot of contact objects, and if he wants to track these contact objects one by one without arousing the other party's vigilance, then he will inevitably need a large number of personnel.
And there are not many agents in the Zhongtong Investigation and Statistics Office lurking in Stone Town, and the most people who can come in handy are a dozen people, if it is enough to track and monitor a person surnamed Xu, but if you want to track down someone who may come to secretly connect with the surname Xu, then the number of agents in Zhongtong may not be enough.
Once, Yuan Shiheng thought of simply telling Yan Fuzhi the news and asking Yan Fuzhi to assist or let Yan Fuzhi send someone to follow him, but Yuan Shiheng quickly dispelled this idea.