Albert silently calculated and said, "More than eighty years." I remember I was almost 100 years old. ”

Wang Xiaotian was extremely surprised. According to the standards of the Eastern Chu Kingdom, Albert's qualifications and talents are poor enough. With such a talent and qualification, it has to be said that it is a miracle that he can cultivate to the seventh level of the Force Master.

Tang Yunjin saw Wang Xiaotian's thoughts, and said disdainfully: "Don't use the conventions of the Eastern Chu Kingdom to measure the cultivators of the Canaan Federation. Most of the practitioners of the Canaan Federation are self-sufficient and do not rely on their families or teachers. This is their tradition. ”

Albert nodded and said, "That's right. We all try to make money first. When you earn enough money, you can go to the temple to study with Leibi. Wait until you have a certain strength, and then go out to make money. Once you've earned enough money, you'll come back to study. ”

"If you go back to study, you don't necessarily have to follow the original Leiby, you can choose Leibi by yourself. Provided, of course, that Leiby is willing to teach you. Some Leibi have a lot of conditions for students, and not all students are accepted. ”

"Every cultivator of the Canaan Federation has to go through more than ten times to earn money and study. The kind of people who rely on the family and the family you are talking about, our Canaan Federation, is not completely absent, but it is very rare. ”

Wang Xiaotian suddenly realized. No wonder Albert, who practiced for so long, was promoted to the seventh-level Force. It turned out that he separated earning money from his cultivation.

Moreover, the resources for their cultivation are also obtained by themselves, and there is no family or teacher to rely on. In this way, it is much more difficult.

Wang Xiaotian didn't understand that it was so difficult to practice alone, why didn't the Canaan Federation form a family and a family and a family to support individual cultivation like the Eastern Chu Kingdom?

Albert said, "What's going on with this cave? ”

Wang Xiaotian thought for a while and said, "That's right, this should be a passage for transporting materials and equipment, and personnel entering and exiting." This mountain wall will definitely be able to open. Is it because it is in disrepair and out of order? Or do you need to enter a password to start it?"

Tang Yunjin took out a fire fold and shook it. The fire lit up.

Wang Xiaotian saw the right side of the mountain wall by the light of the fire, and sure enough, there was a depression. He walked over and saw that inside the depression, there was only an iron rod more than a foot long and the thickness of an arm.

He reached out and wiped the base of the iron rod, wiping the dust off it, and saw an arc-shaped arrow at the base of the iron rod.

He reached out and grabbed the iron rod, and tried a little harder in the direction indicated by the arrow. The iron rod is not heavy, Wang Xiaotian easily pulled the iron rod down, and the position indicated by the arrow.

Then, the whole mountain seemed to shake a little.

Immediately after, a pleasant female voice rang out, "Defense system activated, biological scan activated." ”

"Finding living human beings. The lighting system is activated. ”

"Hmmm, mph. "On the top of the cave, a row of round and convex things suddenly lit up, and the cave was illuminated as if it were daytime.

The pleasant female voice continued, "Expand the scanning range. Discover mutated creatures and activate the close defense system. ”

Before the female voice fell, Wang Xiaotian and the others heard a tooth-sore grinding sound on the mountain wall outside. This was followed by a deafening explosion.

Everyone was taken aback and hurriedly turned on the Force to block out the sound. Tang Yunjin rushed out first, standing at the entrance of the cave and watching.

Wang Xiaotian and Albert also walked over.

When he came to the entrance of the cave, Wang Xiaotian looked up and found that there were eight holes on the mountain wall above the cave entrance. The arm-thick barrel stretched out from the hole of the cave and aimed at the strange bird in the sky, and shot like a storm.

Those strange birds were beaten and had no power to fight back, and their feathers and flesh flew in the air, and they could only let out bursts of wails and fell to the ground one after another.

Tang Yunjin exclaimed, "What the hell is this?

Albert shook his head and said, "I don't know." However, if you are locked by this ghost, I can't think of any other way to save your life than to use the flash skill immediately. ”

All the strange birds were killed, and a pleasant female voice sounded again, "All the mutated creatures are cleared." The environment is safe and the door is open. ”

Immediately after, there was a "squeaky rattle" sound.

When they turned around, they saw a large hole in the mountain wall. Then, the lights in the cave were turned on one by one. Looking through the hole, all you can see is a metal fence inside, with a thick metal pillar in the middle.

Tang Yunjin hesitated for a moment and took the lead in entering.

Albert pouted to Wang Xiaotian Nunu and said, "You go first." ”

Wang Xiaotian shrugged his shoulders indifferently and walked in.

After everyone entered, a pleasant female voice sounded again, "There are no other humans in the scanning range. Close the gate and the defense system is activated. ”

Then the gate suddenly closed. Everyone looked back, for fear that several large holes would suddenly crack in the wall, and countless arm-thick cannon barrels would stick out of the holes and lock them on.

After waiting for a while, I found that there was nothing unusual. Then the crowd turned and went on.

After walking for about 20 meters, everyone came to a circle of fences. In front of them was a huge hole in the ground. There is a metal cylinder with a diameter of more than 100 meters in the cave, and there is a gap of more than two meters between the fence and the column.

When I looked at it from the top of the mountain before, I couldn't feel the shock due to the distance, but now when I see this huge pillar, everyone's hearts are shocked beyond words.

Even if they didn't know about this pillar, the beams of light (particle beams) emitted killed those powerful strange birds in seconds. Just seeing such a massive, majestic building is enough to blow them away.

Standing in front of the fence, stretch your head down through the gap and you can see the bottom below. And there is not just a fence underneath, but a fence every ten meters.

There are also strange machines, like barnacles parasitic on the belly of whales, attached to the pillars.

Looking up, you can only see the top of the cave more than 100 meters high, and the pillars pass through the top of the cave.

Albert looked up and down for a long time and said, "How does this thing emit that light? What's inside?"

Tang Yunjin shook his head and said, "I don't know." And the one who fought the monster bird just now, what is it?"

Wang Xiaotian also had the same question in his heart. Immediately, relevant knowledge automatically appeared in his mind.

Just now, those arms thick, with a "dong dong" sound, killed the strange birds in the air in a volley, were 37 mm twin high-level rapid-fire guns.

The beam of light emitted by the tower is actually a particle beam, and inside this thick metal pillar is a complex set of energy conversion devices. The energy of underground lava can be absorbed and converted into a high-density energy reserve.

In normal times, the fence defense system operates in standby mode with very low energy consumption. Only when a large monster or similar monster appears within the defensive range will the fence system automatically activate and fire particle beams to kill those monster birds and monsters.

As for the fence system, why didn't particle beams be used to kill those little monster birds, the knowledge fed back by Wang Xiaotian's mind also gave the answer.

It turns out that in standby mode, the fence system sets a threshold that is automatically activated. Birds or monsters above this threshold will activate the fence system and emit particle beams.

Below this threshold, the Fence Defense System will determine that its threat level is low and will not kill the target with a particle beam.

That's not to say that the fence system will let go of below-threshold monsters or similar monsters. In the system settings, there will be a close defense system that will be responsible for destroying these targets.

The so-called close defense system is the rapid-fire cannon that suddenly emerged from the mountain wall just now and killed the little monster bird in the air.

To put it simply, the fence defense system feels wasteful of targeting with a low threat level, so it will not kill the target with a particle beam.

As for why the close defense system was not activated in time just now, it shot down the monster bird before it reached the tower. This is because, at present, the fence defense system, although activated, is still a passive defense state, not an active defense state.

In this state, the fence system is like a sleeping dazed person, raising its hand to pat it or wave it away at the mosquito that is flying in its ear, or the mosquito that is biting itself. For those mosquitoes that don't bite themselves and don't fly in their ears, there will be no movement.

There are two ways to change the defensive status of the fence system. One is to enter the control network of the defense system, issue corresponding commands, and completely activate the network.

However, this requires a high level of clearance from the system. More than 1,000 years have passed, and the experts who built the system at that time have long since turned to dry bones. And during this period, a terrible war broke out. I don't know if the high-level authority of the system has been passed down.

Luckily, there is another artificial mode, which is to send someone to open the gate and enter these towers.

In the fence defense system, in order to protect humans, the default setting is that whenever a human enters the system, the close defense system will be automatically activated.

Of course, this mode only works for someone who pulls down the iron rod and activates the tower of the gate. This is also the reason why the little monster bird just now stretched its beak into the cave, and the close defense system still did not move.

Knowing this knowledge, Wang Xiaotian began to turn his gaze to a high place. In the mountain wall above, there should be a lot of close defense weapons, and there are also some lookout posts where you can clearly see the situation outside.

At this moment, the metal cylinder suddenly emitted a slight tremor. All eyes turned to the top of their heads at the same time.

Albert said, "Is that strange bird coming again?"

Tang Yunjin nodded and said, "It should be." ”

Albert said, "How can I see what's going on outside? It's too dangerous to get out." ”

The thought of those gigantic strange birds made Albert's heart tremble. It's just a normal human reaction in the face of great danger, not that he's really cowardly.

Wang Xiaotian said: "There is also a fence above, and there should be a staircase connecting the two layers of fence. ”

Albert immediately ordered his men, "Go and look for it." ”

Two of his men immediately passed from both sides. Soon, the two shouted almost simultaneously: "There are stairs here." ”

Albert grabbed Wang Xiaotian's wrist and ran to the left. Tang Yunjin habitually ran to the right.

Turning the metal cylinder, Wang Xiaotian saw that in the direction of entering the cave, there was a metal ladder going up against the mountain wall, and not far from this ladder, a hole was opened in the fence, and a metal ladder went down from here. On the mountain wall between the two ladders, a huge "0" is written.

Alberta followed Wang Xiaotian, walked to the gap in the fence and looked down, and saw the fence below, and on the mountain wall between the two ladders, a huge "-1" was written.

Then, almost at the same time, the two turned to look up and saw a huge "1" written on the fence above, on the mountain wall where the ladder exit was located.

These three layers of fences, the position of the ladder is continuous. Wang Xiaotian deduced that these ladders should be along the mountain wall, spiraling around the middle metal cylinder. In this way, you don't have to turn around when you go up and down, you can just go down the road.

The number on the mountain wall is used to indicate the number of layers. The cave in which they entered was the gateway to entry and exit. Therefore, the corresponding layer of fence is set at 0 layer, down is the negative layer, and up is the positive layer.

Tang Yunjin also came over, looked up and down for a long time, and then looked at Albert and said, "Up or down?"