In addition to building this secret passage, a control room was built in the secret passage, which controlled the monitoring of the entire underground research center, as well as the access to various rooms, and even two elevators to enter the underground research institute!

Access to the underground research center is subject to accreditation to each room, and some of the most important rooms require multiple accreditations to enter. Just like the room where the V virus is stored, you need to go through fingerprints, facial and pupil recognition, and a complex password to enter. But in this control room, opening the door only takes one command.

This control room located in the secret passage is also one of the top secrets of the research institute, even if the underground research center is occupied, relying on this control room, it can still control every move of the entire underground research institute.

That's why when holding a pre-operation combat meeting, Zhuge Xuan said that once she found a drug leak, she would block the entire underground research center as soon as possible. Relying on these devices in the control room, if something really happened, Zhuge Xuan would indeed be able to block all the passages in the first place, of course, Zhuge Xuan hoped that such a thing would never happen!

Soon, after all the computers in the control room were turned on, Zhuge Xuan, who was sitting in front of the computer, quickly entered the state, and as her ten fingers flew up and down, the surveillance cameras of the underground research institute appeared on several computer screens.

"The research notes of the V virus have been taken by these terrorists!"

In the surveillance that was called up, looking at the empty platform, Zhuge Xuan's face was extremely pale.

"The underground research institute is divided into three floors, and the exit of the secret passage is on the lowest floor, in the room where the V virus research notes are kept. You have limited time, I'll tell you about the details later, so let's go!"

Zhuge Xuan, who was talking, entered a command into the computer, and with a slight noise, the tempered door leading to the underground research center slowly opened, and soon the passage behind the tempered door was revealed.

The special chemical protective suit can only provide half an hour of oxygen supply, and now that almost one-sixth of the time has passed, Zhuge Xuan, who has no idea what he will encounter later, urged the action team members to start acting as soon as possible.

"Let's go!"

Jiang Tianyu, who also understood Zhuge Xuan's meaning, gave an order, and the top soldier from the tactical group, Nalan Jun, took the first step with his weapon in his hand, and the other team members followed closely behind Nalan Jun, and soon entered the passage.

This operation, although it was led by Jiang Tianyu, the captain of the Dragon Tooth Brigade, the most important operation was handed over to the tactical team led by Jiang Chen, as well as Huangfu Feng and Bonn's eight people. Jiang Tianyu, Huangfu Long Chen, and Nighthawk cooperated with their actions, which could be regarded as a practical test for them.

After all ten team members entered the passage, Zhuge Xuan immediately controlled the computer and closed the tempered door.

"Sky Wolf, no terrorists have been found at the bottom of the research center, you can act with confidence!" After scanning all the surveillances at the bottom of the scientific research center, Zhuge Xuan, who had a serious expression, immediately said to Jiang Tianyu.

"Understood!" In the passage, Jiang Tianyu, who was walking in the middle of the team, responded.

Under the leadership of the Nalan Army, after the ten team members advanced a distance of dozens of meters, another tempered door blocked in front of them, as long as they passed through this tempered door, the members of the action team could really enter the underground research institute.

He Mingzhe in the control room also saw the dynamics of the action team through the monitoring installed in the passage, and he didn't need Jiang Tianyu's reminder at all, Nalan Jun, who was already familiar with the operation, immediately entered a command into the computer.

Soon, the tempered door that was blocking in front of Jiang Tianyu and the others slowly opened, and Nalan Jun, who saw this, did not hesitate at all, and was the first to enter the underground research institute.

"Attention, you have officially entered the research institute, please follow my instructions, and do not act without permission!" Zhuge Xuan, who was also busy on the side, couldn't help but remind when he saw that the action team had entered the underground research institute.

Many rooms in the underground research institute are equipped with special alarm devices, and if someone trespasses, the alarm will sound throughout the underground research institute, which will also arouse the alarm of terrorists...

Soon, under the orders of Zhuge Xuan and He Mingzhe, the action team that walked out of the room quickly found the stairs leading to the upper floor.

"Note that most of the terrorists are concentrated on the second basement floor, with two terrorists at the elevator entrance on the first basement level and four terrorists in other locations. Huang Tianji, your people can move! Heavenly wolf, after entering the staircase, your people will be on standby for the time being, and wait until Huang Tianji has finished dealing with the terrorists on the basement floor before acting!"

Zhuge Xuan, who was staring at the screen with his eyes, opened his mouth and said, on the computer screen, at the elevator entrance on the basement floor, two terrorists stood next to the two elevators, one left and one right.

Because no one uses the elevator anymore, the closed elevator is always parked on the basement floor, and the task of the two terrorists is to stay here and beware of the special forces of Huaxia Kingdom attacking them through the elevator.

"Understood!"

At the elevator entrance on the first floor of the research institute building, two elevator doors that have been opened, two ropes are slowly lowered along the elevator passage, and the ropes are finally placed on the top of the elevator car.

Huang Tianji, who got the order, and another team member, after making preparations, grabbed the rope separately and began to descend slowly along the elevator passage.

In the end, the two people gently stepped on the elevator car, Huang Tianji, who squatted down, and another team member carefully opened the elevator safety window under their feet, and then carefully followed the safety window and entered the elevator, without any movement from beginning to end, and the two terrorists guarding the elevator door did not notice the abnormality inside.

Because of the limited size of the elevator safety window, Huang Tianji and another team member only wore a set of special chemical protective clothing before entering the elevator, and did not carry other weapons and equipment. Even so, when the two entered the elevator through the security window, the other team member was almost stuck there, but fortunately they finally entered the elevator unharmed.

"Director, I'm ready!"

"Director, you're ready!"

After Huang Tianji and another team member entered the elevator, they quickly hid their positions according to the position where the terrorists were standing. When the elevator opens, the terrorists outside can't see the two people hiding in the corner as long as they don't enter the elevator.

"Hawkeye, open the elevator door!"

Zhuge Xuan, who was in the control room, quickly ordered after hearing this. He Mingzhe, who was sitting on the side, did not hesitate at all, and under He Mingzhe's control, the two elevator doors that could be controlled by the computer quickly opened slowly.

"Ding!"

After hearing the crisp sound, the two terrorists who had not seen the elevator go up or down before looked at the empty elevator and looked very puzzled. Standing in the position of the two of them, it is true that Huang Tianji and another team member hiding in the corner cannot be seen.

After glancing at each other, the two were very puzzled and planned to enter the elevator to see what was going on.

But at this time, as two pairs of big hands poked out at the same time, the heads of the two terrorists were grabbed by two pairs of big hands at the same time, and then in the two crisp sounds, the two terrorists who were directly twisted and broke their necks did not even let out a wail, and fell to the ground softly.

At the same time that Huang Tianji and another team member succeeded, other members of the action team at the elevator entrance on the first floor of the research institute building quickly landed on the top of the elevator car along the rope dropping rope, and then entered the basement floor smoothly through the safety window.

Subsequently, a set of weapons and equipment was sent down from above, and the action team members who got the equipment quickly put on the equipment. After more than a dozen team members had all put on their equipment, Huang Tianji and another team member had used a similar method to clean up all the remaining four terrorists on the basement floor.

After the terrorists on the first basement floor were eliminated, all the remaining terrorists were concentrated on the second basement floor, which is also the center of the underground research institute center, and generally most of the scientific research personnel work here. Of course, all the virus samples in the research institute are also on the second basement level.

"Captain!" When Huang Tianji and another team member were at the elevator entrance, one of the team members who had already finished wearing the equipment handed Huang Tianji the set of equipment belonging to Huang Tianji in his hand, and the other team member also handed the equipment in his hand to his companion.

"Let's go!"

Soon, Huang Tianji, who had finished wearing the equipment, gave an order, and more than a dozen members from the rapid reaction force formed a battle formation, and quickly found a safe passage to the second underground floor according to the instructions of Zhuge Xuan and Nalan Jun.

When the underground research institute was first designed, there was no safe staircase between the first floor and the basement floor of the research institute building, and only two elevators served as a passage connecting the two floors.

However, between the three floors of the underground research center, a secure staircase was built. For this strange design method, even Zhuge Xuan didn't understand. But the matter has come to this point, Zhuge Xuan and the members of the first action team can only accept this reality!

After Huang Tianji's side cleared out the terrorists on the basement floor, the members of the two action teams had all entered the safe passage.

The two squads that converged at the place successfully arrived at the door of the safe passage on the second basement floor, and through Zhuge Xuan, the two squads who found that the terrorists did not deploy manpower at the entrance of the passage successfully entered the second underground floor.

"Note, including Lin Qianwen, most of the terrorists are concentrated in the largest central research room on the second basement floor, and all thirty-four scientific researchers are there!

Through various surveillance cameras, Zhuge Xuan, who could clearly see the location of all terrorists, spoke.

The overall layout of the second basement floor is very peculiar, and the square research room built in the center of the research room covers an area of 60% of the total area, and the central research room has a total of two entrances and exits. On the periphery, on the other side of the corridor surrounding the lab, there are a variety of other small rooms, but somewhere there is a room-sized space for an elevator.