In February 1950, more than 170 spies lurking in the mainland planned to ambush Chairman Mao's special train in Harbin, which had just returned from a visit to the Soviet Union. The case was code-named "0409". It was a major assassination case initiated by Kuomintang spies lurkin

In February 1950, more than 170 spies lurking in the mainland planned to ambush Chairman Mao's special train in Harbin, which had just returned from a visit to the Soviet Union. The case was code-named "0409". It was a major assassination case initiated by Kuomintang spies lurking in the mainland, with Chairman Mao as the ambush target.

Liberty agent Ji Zhaoxiang

In November 1949, the day when the whole country celebrated the founding of New China was not far away. The ancient city of Beijing was still immersed in this festive atmosphere. Our newly established anti-special monitoring radio station received a rather abnormal telecommunications signal. The signal

made the monitors particularly vigilant. They listened carefully, identified it repeatedly, and quickly copied down the password, and then handed it over to the comrades of the Military Commission's Guessing Bureau for deciphering. Soon, the code was deciphered, and it turned out to be a piece of heavyweight intelligence.

The content of this information is: Mao Zedong is scheduled to visit the Soviet Union on December 1, 0409.

This situation and this information quickly passed into the hands of Chairman Mao. After reading the intelligence, Chairman Mao picked up his writing brush and gave instructions - Ministry of Public Security: Suppress this counterrevolution before I return to China!

Chairman Mao had long wanted to visit the Soviet Union in person but had never been able to do so. It just so happened that December 24, 1949 was the 70th birthday of Soviet leader Stalin . After careful consideration, Chairman Mao decided to personally lead a delegation from the Central Committee of the Communist Party of China to visit the Soviet Union.

Chairman Mao's visit to the Soviet Union was ostensibly to wish Soviet leader Stalin a birthday. In fact, it was an extremely important diplomatic event after the founding of New China. It was not only to resolve some unresolved issues between the two parties and countries of China and the Soviet Union, but also to strive for support and help from the Soviet Union for the construction of New China.

For such an important diplomatic event, even before Chairman Mao even set out, the Kuomintang’s latent spies had already discovered it so clearly! Chairman Mao was of course very angry about this, so he personally ordered the Ministry of Public Security to solve the case before he returned from his visit to the Soviet Union and suppress the relevant agents.

The Ministry of Public Security quickly received Chairman Mao's personal instructions. Unfortunately, the then Minister of Public Security Luo Ruiqing was still inspecting work in the field.The task of cracking the case, capturing the latent agents, and protecting Chairman Mao's safety fell gloriously on the shoulders of Yang Qiqing, the Deputy Minister of Public Security who stayed in the ministry to preside over the work.

Yang Qiqing is an old revolutionary. As early as 1928, he followed Peng Dehuai to participate in the Pingjiang Uprising. During his decades of revolutionary career, he served as the political security guard of the Party Central Committee for a long time and was one of the main founders of the public security cause in New China.

Yang Qiqing has rich experience in security work. After receiving the task, he quickly organized a meeting of capable personnel to discuss in detail how to solve the case in the shortest time to ensure the absolute safety of Chairman Mao's visit to the Soviet Union.

Deputy Minister of Public Security Yang Qiqing

But this is an extremely difficult case. The clues Yang Qiqing has are only this deciphered intelligence of a few numbers. Everyone racked their brains to guess at the meeting, and they can only guess that the four numbers "0409" may represent one of the four characters "Guo Guo Gong".

When Yang Qiqing was distressed, he suddenly remembered Cao Chunzhi, the chief of the investigation section of the Investigation Division of the First Bureau of the Ministry of Public Security. He was a well-known expert in solving crimes. Therefore, Yang Qiqing quickly appointed Cao Chunzhi and asked him to participate in the detection of the case.

Cao Chunzhi is so famous that he is nicknamed "One Wall", which means that as long as he takes action, there is no case that cannot be taken or solved. After Cao Chunzhi accepted the task, he quickly started the detection work.

Cao Chunzhi first asked the Telecommunications Monitoring Station of the Ministry of Public Security to accurately find the address of the enemy station. At the same time, he asked Minister Yang Qiqing to quickly organize all branches in Beijing to search for the suspects related to the case with the four-character surname "Guo Guo Gong" in their household registrations.

However, after searching for several days, no clues related to the case were found in the household registration.Cao Chunzhi decided to change his mind to solve the case. As he was thinking hard, he suddenly realized: spies all need funds for their activities. The defeated Kuomintang authorities in Taiwan could only remit money to the spies through Hong Kong. Therefore, should immediately investigate the remittance situation from Hong Kong to the mainland.

After the Ministry of Public Security conducted a secret surprise investigation into the situation of overseas remittances in Beijing, nothing was found. After asking Minister Yang Qiqing for instructions, Cao Chunzhi turned his target to Tianjin. As a result, a clue was found in Tianjin.

A woman named Ji Ailin recently received two large remittances from Hong Kong. After further surveillance, Cao Chunzhi discovered that Ji Ailin's younger brother Ji Xu was very suspicious. Ji Xu lives at No. 7 Jiudaowan, Nanchizi, which is right next to Tiananmen Square. It is very close to the office of the Central Committee of the Communist Party of China. If this person is a latent spy, then he poses a great security threat to the central leaders.

Cao Chunzhi found the relevant spies from a prison specifically for spies, and asked them to identify Ji Xu based on the photos. The results confirmed Cao Chunzhi's conjecture, Ji Xu was indeed a military spy, and his real name was Ji Zhaoxiang.

As a result, Ji Zhaoxiang's residence was closely monitored. After careful inspection, the electronic investigation team of the Ministry of Public Security found that the enemy station was working near Ji Zhaoxiang's residence. Moreover, the surveillance personnel also reported that Ji Zhaoxiang's room had obvious traces of reporting.

Chairman Mao’s trip to the Soviet Union was immediately adjusted from December 1 to December 6. Yang Qiqing was ordered to accompany him on the trip and was specifically responsible for Chairman Mao’s security during his visit to the Soviet Union. Therefore, the detection of the case was transferred to Li Kenong, then Minister of Social Affairs of the Central Committee of the Communist Party of China.

Li Kenong, Minister of the Social Affairs Department of the Central Committee of the Communist Party of China

Li Kenong is even more famous. He is an old underground worker with a very famous reputation in the history of the Communist Party of China. As early as 1928, he was ordered to infiltrate the Kuomintang spy organization and quickly became the immediate boss of the Kuomintang spy operator.

After listening to Cao Chunzhi's report, Li Kenong instructed Ji Zhaoxiang not to alarm Ji Zhaoxiang first, but to carefully decipher every telegram he sent and find a way to fish out the "big fish" hiding behind him.

Cao Chunzhi followed the plan. In early January 1950, he learned from the deciphered message that two special commissioners of the Secret Bureau who were going to guide the Northeast Technical Column would be parachuted near Harbin. Cao Chunzhi immediately led the relevant people to rush to Harbin to set up nets to arrest them.

Sure enough, these two so-called "Special Agents of the Secret Bureau" were quickly captured around 7 o'clock one evening. They were high-level killers sent by the Kuomintang's secret service. They were ordered to contact the "Northeast Technical Column" that had been lurking for a long time. There were more than 170 special agents preparing to work together to ambush Chairman Mao's special train returning from his visit to Harbin.

After interrogating the two agents, Cao Chunzhi designed an action plan of "impersonating the criminal to trap the criminal". Early the next morning, the imposter Cao Chunzhi met Ma Nai, the commander of the so-called "Northeast Technical Column" and others at the Songjiang Hotel in Harbin.

As soon as they met, Ma Nai couldn't wait to tell Cao Chunzhi the entire plan of action for the ambush. After listening, Cao Chunzhi nodded and said, all those who participated in this operation, the Secret Bureau will give them heavy rewards. Have you brought their list and contact information?

After hearing this, Ma Nai said he had brought it, and quickly took out a few pieces of paper from his body. Cao Chunzhi took it and saw that the names of as many as 170 spies were neatly copied on these pieces of paper. After receiving the list, Cao Chunzhi told Ma Nai, "You have made a great contribution, and I will take you to receive the reward now!"

Ma Nai just noticed something was wrong, but it was too late, Ma Nai and others were captured without mercy. On February 26, Minister Li Kenong told Cao Chunzhi that the surveillance of Ji Zhaoxiang could be ended and ordered Ji Zhaoxiang's arrest. On the same day, Cao Chunzhi quickly arrested Ji Zhaoxiang and found a radio station in his residence. Ji Zhaoxiang had to admit that he was the codename "0409" in front of the evidence.

Ji Zhaoxiang is an authentic Beijinger. He joined the Kuomintang spy organization in 1948. Since January 1949, he has been lurking in Peking and secretly set up a radio station. He sent more than 200 reports in more than a year. His criminal activities of spying have brought serious damage to New China.

On the morning of May 4, 1949, the Kuomintang sent 6 bombers of the Air Force to bomb the Nanyuan Airport in Peking, destroying 4 aircraft of our army and causing 24 casualties. This bombing was based on the intelligence provided by Ji Zhaoxiang. Ji Zhaoxiang was executed by firing squad on June 2, 1950. A huge assassination attempt to ambush Chairman Mao's special train was quietly solved by our public security personnel.