Two hours later, Jiang Yanhai had appeared at base 9. What followed Jiang Yanhai was a phantom fighter. Just above the phantom, the phantom's powerful electronic system had received the intelligence transmitted from the ground.

In fact, Jiang Yanhai looked at Erdan in his mind. The base is a little similar to Chongqing base. The difference is that it is located in the Qilian Mountain and enters it through a tunnel, but the difference is that its road is blocked.

Ordinary people's vehicles can't get on this road because it is not connected with the outside world, and the only connected town is actually the family village of the research base.

In the northwest, such a small town has a small number of people, a small area and is located in a remote corner. There is no contact with outsiders at ordinary times.

Even the locals don't know this information. They just think there is a small town here.

In fact, the other side of the tunnel was artificially collapsed, but in the eyes of outsiders, they just think that the whole tunnel collapsed directly, and it is impossible to enter from the other side, and the road on the other side is also abandoned.

In fact, this is the whole secret research base. The research base covers a large area. Its tunnel is also very wide. In theory, any fighter can enter the tunnel with a total width of 22 meters. However, the reason why the tunnel is so wide is not for fighters to enter.

But sometimes it is necessary to transport some special experimental equipment, and many equipment are large, so its tunnel will be built in such a large area at the beginning of its establishment.

The base enters the interior, hollows out the whole mountainside and adopts nuclear protection engineering. Its total internal depth is 150m. It is built by using a natural cave that originally existed inside. Its lowest area is the largest, and the whole karst cave has undergone nuclear protection and reinforcement.

There are only two front entrances, and there is a separate secret passage connecting the other end of the internal karst cave, but the place has been artificially closed and will not be opened unless in an emergency.

As for other ventilation devices, there are various protective measures, and even this kind of ventilation device can not enter if it enters the primary locking state.

Jiang Yanhai has seen the drawings of the whole base, but the point now is that they don't know what happened.

Jiang Yanhai enters the command hall. Fan Tianlei and all of them are here.

"Is there an order passed down?" Jiang Yanhai asked immediately.

"Under your full command, the current base blockade time is 2 hours and 42 minutes. According to the information transmitted above, after the whole study is completely sealed, its internal air circulation system will start automatically, but this can be closed by the people who blockade the base."

"If the circulation system is started, the internal air circulation system can allow all personnel inside to use for 24 hours, but if it is not started, the internal air circulation can only allow the personnel inside to survive for 6 hours." Qiao Fangyuan immediately introduced.

"Where are the base guards?" Jiang Yanhai frowned.

"In order to ensure its concealment to the greatest extent, the base does not have many personnel, but there are garrison forces around the base. After all, more personnel need more material reserves. At present, there are 72 researchers and 12 logistics personnel locked inside the base. There are 232 security and logistics personnel in the base, and all the other 220 have been killed Withdraw. "

"The blockade starts from the core laboratory area. The security personnel in this area are not allowed to enter. These 12 logistics personnel are the only ones who can enter."

"What about the electronic system?" Jiang Yanhai frowned.

"All connections are disconnected. Judging from the current form... It's like encountering an electromagnetic pulse bomb. All internal instruments have been destroyed and all connections with our outside world have been interrupted."

"Power is also interrupted?" Jiang Yanhai took a deep breath.

"At present, it is impossible to judge the internal power supply system, but the external power supply room has been burned. According to the description of the employees in the external power supply room, the power consumption suddenly reached a peak before the power interruption, and then burned instantly." Qiao Fangyuan quickly introduced the situation.

Jiang Yanhai frowned tightly. If more high-power appliances are used in the internal power supply of the family, the circuit may trip, but the power that can be accommodated by the circuit supplying the secret base can be known by thinking about it.

Therefore, it is impossible to interrupt power due to internal research. There is only one reason. There is an unknown energy explosion, such as electromagnetic pulse.

"This base... Studies what?" Jiang Yanhai thought for a moment or asked.

"The chief said, if you ask, I'll tell you who came back from Africa." Qiao Fangyuan didn't know, but he gave a word.

Hearing this, Jiang Yanhai nodded. He guessed it was.

More than a year ago, those mysterious goods from "who am I" in Africa landed at the Decepticon base. I don't know where they were sent, but it is estimated that they were sent here.

"Can you confirm whether someone attacked?" Jiang Yanhai took a deep breath and asked.

"It's not certain. According to the security personnel, the base has strict confidentiality measures. Theoretically, it's impossible for someone to sneak in from the outside. They haven't been able to find it, especially directly into the core area."

"However, this theory is not absolute. The base is connected to an underground river, where the groundwater is the source guarantee of the drinking water source of the base, and the underground river can indeed go to several secret exits nearby."

"The problem is that the channel in the underground river is complex. Even our current unmanned underwater detector has not fully detected it. Personnel dare not go deep completely. Unless someone has a complete grasp of the flow of the underground river, it is unlikely to sneak into the base."

"And even if you enter from the underground river, it's not so easy to avoid security personnel. This is the only possible loophole." Qiao Fangyuan shook his head.

"The focus now is that the sensors placed in these areas have been completely damaged, and we can't connect to get data," said the Black Hawk, who maintained a network connection with them.

"I see. Is everyone back now?" Jiang Yanhai asked immediately.

"All the main members of the special combat group are here."

"Yang Rui, Xu Hong, Gu Shun, Li understand, Zhang Tiande, Tong Li, Zhuang Yu, Lu Yu, Chen Shanming, he Chenguang, Li Erniu, Wang Yanbing, song Kaifei, Xu Tianlong and I, a total of 16 people, I will lead the team in person." Jiang Yanhai said decisively.

"Yes!"

"Order, the air combat unit, two phantom, two J20 take off, a large early warning aircraft, an electronic warfare aircraft and two unmanned reconnaissance aircraft enter the battlefield, and order the ninth rapid response brigade to transport the special combat group 2km away from the base and wait for orders at any time."

"The artillery regiment enters the attack posture and issues a request to the superior to request the original Guard troops near the base to enter the first-class combat readiness state."

"Yes!"