Our country was just beginning to develop at that time. How could there be so much cutting-edge technology to sell? Furthermore, the mayor of Harbin abandoned his official duties to sell off companies that could generate tax revenue and create jobs for his jurisdiction. Is he out of his mind? After analyzing the above, it seems that this is not the case.

The army sent two more experts in this area to Harbin day and night. In fact, our country really has no experience in this area.

While waiting for the expert, Suihe kept hanging on to the middle-aged man by claiming he was interested in a certain factory's technology. He invited him to dinner, play cards, and other entertainment every day, using the excuse of enhancing his relationship with the middle-aged man.

On the fourth day, the experts finally arrived. They were two female comrades. Zhuang Qiuqiu explained the current situation to them in detail. The two female comrades were also very experienced and had unique insights into economic crimes and commercial espionage. They had just cracked a major counterfeit currency case in Nanjing and had taken a train directly to Harbin on orders from above.

The older of the two women was surnamed Li, in her forties, and was casually addressed as Sister Li. The other one looked slightly younger than Sister Li, and was casually addressed as Sister Zhao.

Because he was afraid that the middle-aged man would send people to monitor Suihe and Zhuang Qiuqiu, he did not return to the local troops, so he stopped Suihe and several people from holding a small meeting in the hotel.

Li Jie analyzed that this organization not only steals the country's core technologies, but also uses these technologies for illegal transactions, making huge profits. Most frighteningly, they may attempt to influence the country's political stability and economic security through manipulating industrial espionage.

This is the most terrifying thing, and it is also what Suihe and Zhuang Qiuqiu are most worried about.

The next day, Sister Li and Sister Zhao dressed up as if they were 20 or 30 years older and went to a store near Tianyuan Company to apply for jobs. When they came back in the afternoon, they both found jobs.

On the third day, Zhao, who worked at a noodle shop across from Tianyuan, successfully met Tianyuan employee A. The two even addressed each other as fellow villagers. Perhaps because they had only known each other for a short time, or perhaps because company secrets were forbidden for employees to discuss freely, Zhao didn't manage to extract any useful information.

On the fourth day, Sister Li received news that Tianyuan needed a cleaner. When Sister Li, who was the old lady's makeup artist, heard about it, she immediately stopped working there and went directly to Tianyuan. She was actually accepted the job. Although it was just cleaning, she would definitely be able to get in touch with the core after a long time.

Suihe's subordinates have figured out some of the middle-aged man's patterns after tracking him 24 hours a day. He would go to a fixed house and stay there for two hours every two or three days, and no one knew who he was meeting.

But every time, it was only the middle-aged man who went in and came out by himself after more than two hours. Apart from the middle-aged man, no one else was seen entering or leaving here. The only explanation was that they went underground. It seemed that there was a tunnel in this house.

Suihe asked his superiors to ask the Urban Construction Bureau for the defense map of Harbin, and tonight he would take people to the underground passage near the middle-aged man's house.

Harbin is a city with a long history. When the little Baga occupied it, they secretly modified many underground passages. I don't know if this route is on the route map. If not, I can only go to the site and grope around to find it.

At night, Suihe and his four comrades entered the underground air-raid shelter with flashlights, pistols, ropes and other necessary tools.