That night, when the factory was quiet, Qi Qing and Mo Xun quietly left the yard.

Du Ruying knew that they must have gone to see the air-raid shelter, so she told them in advance the general direction of going in. In fact, there is only one way to enter from the nearest evacuation entrance nearby, and you can walk along the road to the end, and there are clear signs painted on the walls. Follow the markers and you'll reach a large space.

She had only been to that large space since she participated in the exercise. She remembered that there she could pick up supplies, then wash her hands and go to the toilet, and there were signs where she couldn't enter, and nothing else was special.

Qi Qing asked her mother to stay at home and not to follow her for the time being. In case Lao Xu comes to inspect at night, or if someone else comes to find something, his mother can still deal with it.

The lock at the entrance and exit was easy to open, and Mo Xun took a lock-picking tool and easily got it. It was a chain lock, and when they entered the door, they were able to wrap the chain back around again, disguised as if the chain was still locked. Mo Xun's lockpicking skills are very good, and the unlocks that have been opened can still be used as usual, so you don't have to worry about goofs at all.

After entering this evacuation passage, as my mother said, there was only one road, there was no other fork in the road, and I came to the end and gathered into a wide passage, went down the stairs several times, followed the signs, and entered a large space not far away.

Qi Qing and Mo Xun not only brought a strong flashlight, but also a detection device, which could be roughly located. Combined with the layout of the factory, they speculated that this large space has not yet reached the location of the mountainside, and should be just a gathering space located under the ground of the factory.

Qi Qing felt that this place was more like an underground assembly hall.

There is a half-meter-high stage in front of a wall, the walls of the stage are whitewashed, and the ceiling above the stage still has a curtain from many years ago. At this time, although there are no seats in the audience, everyone stands or brings their own benches, and it should be no problem to watch the show here.

This is the multi-purpose hall of the old generation.

On the side of this large space, there is a sign of men's and women's toilets, Qi Qing went to check it and found that there was no water, but this place must have been connected to water before, and the sewage pipes were introduced into another place after being concentrated.

She used the equipment to measure the horizontal height, this large space is ten meters below the ground of the military factory, there can be water supply and discharge here, and it must also be equipped with sewage pipelines. In the future, they will renovate their basement, and they will also have to consider the problem of sewage, and it is best to connect it to this sewage pipeline.

They walked around the large space, finding their way to the others.

There are indeed a few other doors, two of which are marked as equipment rooms, which are off-limits to non-staff. There was also a door that looked like some other evacuation opening, but it was actually swept through with a detection device to determine that the tunnel behind this door was heading towards the belly of the mountain.

Qi Qing decided to explore the road to the mountainside first.

Mo Xun checked whether the door here had electronic joint control equipment, and confirmed that it was just an ordinary door, so he unlocked it. Behind this gate there are several forks in the road and several iron fences, all of which are hung with signs prohibiting entry to military sites.

They searched all the roads, and found that behind a few iron fences were basically warehouses of various materials, most of which were empty except for a few tables, chairs and benches.

The only place that is different is that the iron door is particularly heavy, and I feel that the sense of technology is immediately improved. There was a light on the door and a hidden keypad.

Mo Xun reminded: "This device is a satellite patrol signal lock, and it is estimated that after this door is the military's former secret research and development base." ”

Qi Qing asked, "Can't you break this kind of lock?" ”

Mo Xun shook his head: "I've only heard of this kind of device before, and only a specific card or password can be opened." Different from the electronic access control principle we commonly use now, domestic satellites flying in the sky may monitor here, once the lock is opened, a record will be generated and uploaded, and it is easy to trigger an alarm. ”

Since the precautions are so strict, how did Lao Xu get in back then? At that time, Lao Xu should have only been a half-grown child, and he would definitely not open this door. Maybe there was a different way, or maybe the door wasn't locked in the first place.

"Forget it, the space we explore today is already large enough, and it is estimated that it will not be needed in the extreme cold and natural disaster stage, and when it is extremely hot, it will be enough for us to move to that large space."

Mo Xun nodded, looked around and flipped through again, and on the way back, he suddenly said: "I thought it was a little strange just now, and then I checked the rust marks and dust elsewhere, and now I can basically determine that it may have been an ordinary door before, and it is estimated that it was rebuilt in the past twenty years, and the door with that ultra-high protection level was installed." ”

Qi Qing said strangely: "Twenty years ago, the military factory has been declassified, besides, we chatted with Lao Xu tonight, and we haven't heard him say that there is a big project here." If there are any facilities and equipment added to the air-raid shelter, can Lao Xu not know? ”

Mo Xun said: "The decryption is just over the factory." It is possible that there is still a confidential project in the belly of the mountain, and Lao Xu can't say it casually. It is also possible that there is another entrance and exit in the mountainside, and you have heard that you can park the plane before, so there must be an entrance and exit for the plane to take off and land. Transporting equipment into the mountainside from that side and installing a gate with a high protection level can not alarm the people in the factory area at all. ”

"Could it be that there are still people working in that base now?" Qi Qing suddenly opened her mind, "If that's the case, if a natural disaster strikes, we hide in the air-raid shelter, and they will also find out, right?" ”

Mo Xun smiled: "Maybe, we'll see it then." ”

"That's right, let's be self-reliant first, and we won't trouble the country easily." Qi Qing also wanted to open it.

When the two of them left from the evacuation entrance, locked the chain as they were, and walked to their yard, they didn't expect to meet Lao Xu.

Lao Xu was carrying an emergency light and riding a 28-bar bicycle, but he didn't expect that there were still people swaying outside in the middle of the night, and when he stopped and looked, he found that it was Qi Qing and Mo Xun.

Lao Xu asked: "Xiaoqing, why did you come out to press the road so late?" ”

Qi Qing's face turned red, and she said shyly: "Uncle Xu, I just ate a little bit of hot pot at night and couldn't sleep, so I asked Mo Xun to accompany me for a walk." ”

Lao Xu smiled with a wrinkled face: "Well, young people, it's good to exercise more and cultivate feelings." The air in the mountains is good, but it has been cold recently, so don't stay outside for too long, be careful of catching a cold. ”

"Well, thank you, Uncle Xu." Qi Qing asked again, "Why are you still patrolling at night, isn't there no one in the factory?" ”

Lao Xu said: "I have developed a habit, there were a few old brothers before, and I changed the guard and night patrol, now I am old and sleep less, I can't sleep and come out to patrol a circle, in case there is something wrong with it, see with my own eyes that there is nothing to do with my heart." ”

Qi Qing was curious: "What else can be wrong with this?" ”

"In the past, they mainly inspected open fires, but after Professor Wang and the others came, one day a student said that they noticed that there seemed to be people poaching wild animals in the forest, and he heard a sound like gunshots. Although there are special rangers with guns in the mountains, if there are poachers who do wander into the factory and I bump into them, I will definitely catch them. ”

People who poach wild animals are indeed hateful, and Qi Qingxin said that if he encounters it, he can't stand idly by. She secretly admired Lao Xu's sense of responsibility, and she didn't dare to inquire about the air-raid shelter head-on, for fear that the other party would be suspicious, so she obediently returned home with Mo Xun.

For the next few days, nothing was too big, but it was really getting colder.

Fortunately, Qi Qing focused on repairing the basement, and he had already given up buying a broken bridge aluminum alloy window to strengthen the room on the ground, and finally prepared the basement before it snowed heavily in the factory area.

At this time, the water dripping on the ground turns into ice, and the air source heat pump in the basement is turned on, and the warmth melts.