Li Anping, who returned home, locked himself in his room and looked at the set of numbers:

1333817--1233

247654--32117

.......

To explain the specific Chinese characters represented by the numbers above, be sure to find the mother copy of the code.

And the current analysis shows that the bookstore is the most likely, and after thinking about it, Li Anping left the room and walked towards the bookstore.

Chen Xiao teaches physics, and it stands to reason that most of the books he reads are related to physics, so Li Anping walked to the bookshelf where physics books were placed and slowly flipped through them.

For the next two days, he finished reading every book on the shelf, and suddenly his eyes lit up, and between the two worn-out physical materials was a very thin manuscript "Thirty-six Strategies".

Li Anping carefully flipped through it, but he didn't find anything unusual, but this manuscript was mixed in the middle of these books, is it an accident or what does it mean?

Li Anping took advantage of the bookstore owner's inattention and brought out the manuscript "Thirty-six Strategies". When he got home, he locked himself in his room, but he couldn't decipher the numbers or how to check them out.

At this time, he remembered that when his master went to Nanjing for training before, he had told him some methods for deciphering the simple numerical code of Guantian, and the simplest method of corresponding the number to the mother.

The complexity of the master book determines the difficulty of deciphering the code, and the real skilled communicator is able to memorize the order of all the Chinese characters in the entire master book, and as soon as any four special numbers are mentioned, they can immediately reflect which position and which Chinese character corresponds to in the master book.

The key to anti-decipherment is to regularly change the matching method between the master and the number, so that even if the opponent intercepts the telecommunication number, it is impossible to decipher the content without the master copy, which is the code book we often hear.

The most basic entry password is to use numbers to correspond to the Chinese characters in the parent text, such as the first set of numbers "1423", which corresponds to the 1st item, the 4th column, and the 23rd Chinese character in the parent copy, and the corresponding character is a "circle" on the parent book.

But after Li Anping finished pairing, the words that could not be connected at all, is there any other way to decipher?

It will be the kind of deciphering method of adding or subtracting, multiplying or even reversing the order, these are all said by an agent codenamed "Migratory Bird" when Master Zhao Zhengyuan went to Nanjing before, and I heard that this agent was also personally received by Kegong......

Thinking about it, Li Anping took out this set of numbers again and looked at "Thirty-six Strategies".

1333817--1233

247654--32117

Could it be that numbers are numbers and contain numbers?

Li Anping tried to multiply the first number by the second number; 2nd digit, multiplied by 3rd digit....... This results in a new set of numbers.

3992487--266

828423020--6217

Then check the manuscript.

The first set of numbers "3992487" corresponds to the 3rd, 9th, and 92nd Chinese characters, and corresponds to the character "cheng" on the parent text. Using the same method, Li Anping quickly obtained: "No. 27, Chinese medicine shop, No. 29 Chengxian Street, is twelve o'clock in the morning." ”

Li Anping, who was excited, looked at the calendar and it was already the twenty-sixth today, but fortunately he deciphered it before the joint.

It is very obvious that it may be deduced that Chen Xiao will go to the Chinese medicine shop at No. 29 Chengxian Street at 12 o'clock tomorrow morning to connect, it seems that the current Li Anping can only pretend to be "Chen Xiao" to connect and see who the other party is.......

If the connector is the "barber" Cao Ruofei, then what then?

......

Li Chengfeng was very satisfied with the successful conclusion of Wang Yidao's ideological work, because Wang Yidao did not raise any objections or argue on the spot, indicating that Wang Yidao slowly began to support Li Anping's work.

Li Anping's nightmare was not over yet, when he got off work, he saw Fu Yun waiting for Cao Ruofei at the gate from a distance, and then the two left arm in arm. When he first saw Fu Yun and Cao Ruofei together, they always maintained a certain distance between them.

And this time, it undoubtedly shows that Fu Yun has completely accepted Cao Ruofei because he is married. Compared with the heartache and uneasiness brought to him by Fu Yun, Li Anping felt that if Wang Yidao said anything, he would push back the engagement, so that he could go to Fu Yun, he wanted to reconcile with Fu Yun, he couldn't watch Fu Yun follow Cao Ruofei, a bastard!

For so many days, Li Anping tried every means to force Cao Ruofei to lose patience and no longer hide and act, but Cao Ruofei turned a blind eye, but he became upset first.

However, for him at present, as long as it can be proved that Cao Ruofei is a spy, needless to say, Fu Yun will definitely leave him. Li Anping was thinking: whether to act alone or report this plan to the above. Although he can directly pick up Chen Shuisheng without reporting to him, this is still not good overall...... As long as Chen Shuisheng knows, then Cao Ruofei will definitely know.

.......

At noon on the 27th, the streets were bustling with people, and the sun was sparing no effort to radiate light and heat, as if it wanted to dry everything on the ground.

On a street that is not a main road, a young man in a white suit and less than thirty years old is walking forward.

He kept wiping his sweat with his handkerchief and looked at the house numbers of the buildings around him from time to time, as if looking for an address.

There are not too many pedestrians on this street, and the houses on the street are basically some shops, such as Chinese medicine shops, shaving shops, and restaurants.

Everything looks no different from normal days, and it seems very normal.

Li Anping is very cautious, as an underground work author, an accident often means the end of his life, not to mention that he is now connected as a "spy".

In fact, he had already seen the Chinese medicine shop from a distance through the house number, but he did not rush to the joint, but slowly paced and pretended to be unfamiliar to observe the surrounding environment to see if there was anything abnormal.

The joint time was 12 o'clock at noon, and Li Anping arrived half an hour early.

The Chinese Medicine Shop at 29 Shing Yin Street is a two-storey old-fashioned building, and the ground floor is a place for Chinese medicine practitioners to sit and take medicine.

On the second floor, a banner was hung, on which were written the four big characters of hanging pot Jishi, and some windows were opened next to it, which was the living room of the owner of the pharmacy.

On the edge of the windowsill in the middle of the three windows, there is a small pot of pink moon flowers.

This is a code that everything is fine, indicating that there are no safety issues at this joint location.

Li Anping saw this pot of flowers from a distance, and his vigilance in his heart was slightly reduced.

This code came out of his deciphering code, and it seems that everything is normal here, and it can be connected.

Li Anping took out the pocket watch left by Zhao Zhengyuan on his body and looked at the time, it was 11:45, and there were still 15 minutes before the joint time.

He began to pick up his pace, adjusted to his normal walking speed, and walked towards the Chinese medicine shop....