It was about to dawn, and Professor Zhang was still deciphering the coded telegram with Liu Zifeng. Both of them had red eyes, but apart from anxiety on their faces, no one felt a little sleepy.

Liu Zifeng raised his head and looked out the window, the night outside the window was gradually fading, and at this time, he remembered Xiangyun's quiet and bright smile at him last night, and couldn't help but worry about Xiangyun's safety.

Professor Zhang tapped lightly on the table, signaling him to concentrate.

Liu Zifeng felt that he was out of shape, his face turned red, and he hurriedly buried his head and concentrated on his work.

Professor Zhang couldn't help but ask: Why, you haven't figured it out yet!

Liu Zifeng nodded and said: "Japanese spy agencies often use numerical codes, such as using '1906' to represent the word 'day', using '0078' to represent the word 'Ben', and so on, this method is the simplest and most practical. But this is a cipher telegram sent in the Western alphabet! ”

"Western letters, will these British letters be swapped in turn according to the rules of the password?" Professor Zhang whispered.

Liu Zifeng was inspired by Professor Zhang's words, and then sorted out his thoughts, and entered those complicated and strange ciphers again, at this time he suddenly became enlightened, and after trying, he finally discovered the law of the telegram cipher, and replaced the A of the code with D, E with J, and so on, it became this Western cipher.

This discovery made the extremely tired Liu Zifeng's spirit suddenly lifted, and he hurriedly connected these several mantissa together as if he had discovered a new continent, and seemed to see the Chinese password from it.

He wrote quickly, and suddenly threw the pen in his hand on the table, and shouted: "Found it, found it!" ”

Liu Zifeng excitedly sent the deciphered message to Professor Zhang.

"Be quiet, beware of the wolves." Professor Zhang reminded Liu Zifeng, and impatiently picked up the message and looked at it carefully.

I saw that it read: "The Japanese sightseeing boat departed from Taiwan on the 25th, passed through Penghu Island, and arrived at Xiamen Island one day later."

Professor Zhang looked excited, but then frowned.

"Who sent this telegram?"

"Is the content of the telegram reliable?"

"If it is a stranger, why is this telegram being sent, and what is its purpose?"

This series of questions suddenly surfaced in Professor Zhang's brain, as a spy officer, this question is very important and must be clarified.

Thinking of this, he asked suspiciously, "Zifeng, how reliable do you think this telegram is?" ”

Liu Zifeng thought for a while: "I thought that the other party sent a report three times, all repeating a content, and the report was tense and hasty, which proved that this person's heart was urgent, and he wanted to be anxious to inform this important situation, but he knew our contact information, so he took this form." Based on the above analysis, the content of this information should be accurate and credible. ”

Liu Zifeng said as he watched Professor Zhang's reaction.

Professor Zhang nodded, and said to himself: "Who sent the secret telegram, the Japanese, traitors, international friends, or anti-Japanese elements, alas, I have a mess in my head now, why are they telling us this, what is the intention?" He said with a look of confusion.

Liu Zifeng answered: "This telegram uses a new set of passwords that have not been used in the past. It is almost certain that the power generation personnel could not be our comrades who penetrated into the enemy's interior. Most likely......"

"What could it be?" Professor Zhang asked.

"It is very likely that he is a member of the Japanese Anti-War League as mentioned by 'Sea Breeze', and if it is true, this person can be used by us!"

"What is the basis for your judgment?" Professor Zhang then asked.

Liu Zifeng thought for a while and said: "Listening to Comrade Gao Peng, he has come into contact with comrades from the anti-fascist camp among the Japanese, and the representatives of them are Ryūo Nishiri and Hidemi Ozaki of the East Asian Tongbun Academy, and they also secretly joined the Chinese Communist Youth League. ”

Professor Zhang interjected: "I've heard some of this, but what about later? ”

Later, during his studies, Nakanishi was involved in distributing anti-war leaflets to Japanese naval cadets who came to Shanghai and resisting the Japanese attack on Shanghai in 1932. Unfortunately, their actions were detected by Shinichi Fukuda, a special high-tech agent who was secretly operating in the Tongbun Academy, and the two were arrested for this, but they were later released because there was no evidence and returned to Japan with all the students. After returning to Shanghai in 1934, Ryūo Nishiri served as a reporter for the Shanghai General Bureau of the Japan News Agency, and soon joined the Chinese Communist Party. They used their profession as a cover and built a network of red spies. It is highly likely that the person who sent the telegram was part of their anti-war group. Liu Zifeng said.

"If that's the case, that's great!" Professor Zhang let out a sigh of relief.

He thought for a moment and then said, "Please tell 'Beaver' and continue to listen to Radio 3 to find out the identity of the sender." At the same time, a telegram was sent to 'Sea Breeze' requesting instructions on the next steps of the sightseeing boat. ”

"Yes!" Liu Zifeng happily agreed.