However, due to a large explosion in the leprosy village, the entire nest city has been locked down, and the construction site has been suspended.

Powerful diggers are naturally the best sources of soldiers for the major gangs.

Originally affiliated with the construction companies of the major gangs, they have replaced their pickaxes, impact drills, and rock crushers with more lethal swords and guns to fight the monsters and maintain order.

The entire site was empty, with only a few guards patrolling back and forth.

"The secret passage I found is deep in the construction site, but I have to get around these guards." Aggie whispered.

Meng Chao released a wisp of spiritual energy and quickly scanned the surroundings.

He quietly disappeared into the darkness.

When it reappeared, there was a mouse with a fat head and big ears and shiny fur.

Meng Chao pinched the mouse's neck to prevent it from making a sound.

Then, he aimed behind several guards and threw it away.

He used a cloud of psionic energy to envelop the mouse, forming a psychic magnetic field around the mouse that resembled a cushion of air.

The rat landed lightly, not injured, but frightened, "squeaked" and ran desperately.

The attention of several guards was immediately drawn to the rats.

Chase the rat's tail and chase it to the corner to investigate.

Meng Chao and Aji took the opportunity to sneak into the depths of the construction site.

"It should be...... Over here! ”

Aggie fumbled around the wall for a moment, with certainty.

Meng Chao also touched the place he had just groped.

It was found that there were slight unevenness on the wall, which seemed to be a "Ji" character.

It seems to be gently scraped out with a blade or a cone, and in the dim light, it is not clear to the naked eye.

Only a person with a very keen sense of touch can touch this mark by carefully rubbing it with his fingertips.

Aggie said that was the mark he had made the last time he escaped from the Alloy Arena.

Following the mark, it didn't take long for two huge pipes to appear in front of me.

A pipe is more than two meters in diameter, and it "rumbles" inside, like a howling wind.

Most of the buildings in Chaocheng are located underground, and air circulation is naturally a major event related to the lives of countless people.

Therefore, the diameter of the ventilation duct here is more than three to five times that of the building on the ground, and there are large industrial fans that rotate at high speed to ensure that the fresh air on the ground can be fed into the ground unimpeded.

Of course, because the nest city is shrouded in flames and smoke, the air inhaled into the ground at this moment is also full of small particles with high pollution and strong corrosion? Sucked into the nasal cavity, hot and painful, sucked too much? Feel like the world is spinning? Dyspnea? It's as if the lobes of the lungs have turned into erected plastic.

Meng Chao and Aji were not prepared to sneak into the alloy gladiatorial arena through the ventilation duct.

This is because the industrial fans that rotate at high speed in the ventilation ducts are very difficult to deal with, and there are also filters with alarm systems, and high-voltage power grids that are specially designed to deal with snakes, insects, rats and ants.

Ordinary snakes, insects, rats and ants strayed into the ventilation ducts? It will be burned out in an instant.

Meng Chao and Aji don't want to taste it? It was so electric that the skin and flesh were opened, and the smell of green smoke was rising.

There is also a pipe with a slightly narrower diameter next to the ventilation duct.

Cables, fiber optic cables and crystal cables are laid inside.

Can it also reach deep into the ventilation duct? Machinery and control units for industrial fans? It is used as a repair pipeline.

Although less than a meter in diameter? But for Aggie, who is already skinny? And Meng Chao, whose control over the body has reached its peak? It's not too much of a problem.

Before the guards came back? The two cats got into the repair pipe.

They crawled in the maintenance pipeline in the dark for more than ten minutes, passing through four forks in the road.

Aggie said that when he escaped, he left marks at every fork in the road.

Sure enough, Meng Chao is on the inner wall of each pipe? I all felt the crooked word "Ji".

And sometimes an arrow? Point to which fork in the road.

With the help of these marks? Do they screech precisely inside a three-dimensional labyrinth of repair pipes? I didn't lose my way even once.

Eventually, the repair pipeline came to an end.

Meng Chao looked at Aji.

"Upper."

Aggie pointed to the top of his head.

Meng Chao groped carefully again.

I didn't feel the mark this time, but I did touch a gap in the sealing cover? and four huge nuts.

The nuts are tightened so tightly that the cover is almost integrated into the pipe.

But this couldn't help Meng Chao, he took out a monster slime from the treasure-chest-like military backpack, and used a small brush to carefully apply it to the gap between the nut and the cover.

After a while, the joints between the cover plate and the pipe made a "snort, snort" sound.

Unscrewing the nut again is naturally much easier.

Lifting the cover, there is a reserved shaft above, black and dark leading to the ground, I am afraid that it is not hundreds of meters high.

A similar structure can be used as a strong and weak power well, as well as to transport guns, ammunition and various supplies needed for survival, and when necessary, it can also be used as a temporary escape route.

Unfortunately, the ancillary facilities of the alloy arena were not completed, and there were no escalators or climbing openings on the four walls of the shaft.

The walls are smooth and there is nothing.

Meng Chao groped for the roughness of the wall of the well.

It was found that the wall of the well was simply coated with a layer of cement, and the particles were very coarse, covered with bumps of several millimeters high.

With the help of a few millimeters of force, he can easily drag hundreds of pounds of things to climb up.

"Do you need me to carry you?" Meng Chao asked Aji.

"No, you don't."

Aggie shook his head and said stubbornly, "I can do it." ”

Meng Chao glanced at the leprosy boy deeply, nodded and said, "Okay, I'll go up first, be careful yourself!" ”

He was like a giant gecko, silently climbing the wall of the well.

The Ten Signs were not smeared with any glue or slime, but were firmly attached to the rough cement surface.

The military backpacks, which were loaded with guns, ammunition and various supplies, were all hung securely behind them.

Meng Chao climbed up dozens of meters in one go.

Aji followed him, crawling much slower, and gradually distanced himself from Meng Chao.

Meng Chao seemed to be concentrating, not paying attention to the movement behind him.

Suddenly, the leper boy seemed to be exhausted, his arms trembled, his palms sweated, his hands slipped, and he fell.

Meng Chao heard the exclamation and immediately flew to the rescue.

It's a pity that Aji exclaimed while dancing with his hands and feet, just avoiding Meng Chao's helping hand.

He fell back to the bottom of the well, his left ankle making a "click".

"Aggie!"

Meng Chao then landed, frowning slightly, and his eyes fell on Aji's left ankle.

The leprosy boy's left ankle was already swollen like a steamed bun just out of the steamer, big and hot.

He bared his teeth in pain, tears of pain and unwillingness rolling in his eyes.

"I, I'm fine, Brother Chao, I can do it."

He struggled to get up, but he was involved in the sore spot, and he snorted, and his tears and snot rolled down like a flood that burst the embankment.

"I, I'm afraid I won't be able to, Brother Chao."

"My foot is sprained, I'm afraid I won't be able to keep up with you, and it's impossible for me to sneak into the alloy arena without being discovered by the guards......"

Meng Chao closed his eyes, groped carefully on his ankle for a moment, and said, "Fortunately, it didn't hurt the bones, but the tendons were a little strained, and after a few days of rest, it will heal."

"Well, stay here and wait for me, I'll leave you with the first aid kit and this food, at least for a day and a night.

"If you can't wait for my news after a day and a night, it is estimated that there will be more luck and less luck, so you can ask for more blessings!"

"Brother Chao—"

Aji said guiltily, "It's all because I'm not angry, I fell down the shaft, I, I don't know what's going on, if I listened to you just now, it would be nice if you climbed up on your back!" ”

"It's okay."

Meng Chao smiled slightly, patted Aji on the shoulder a few times, and said, "You are still so young, there is no need to go deep into the Alloy Gladiatorial Arena to take risks, anyway, we have come to the direct bottom of the Alloy Gladiatorial Arena, the straight-line distance is no more than fifty meters, and next, everything is up to me!" ”

"Well, I believe Brother Chao, you must be able to!"

Aggie pointed to the top of the dark shaft, "Climb out of this shaft, you just have to follow the place where the smell is strongest, you can find a ditch, walk along the ditch for a while, climb out of the hole, and you can enter the inside of the alloy gladiatorial arena." ”

Meng Chao nodded, thought about it, and asked, "The smell is the strongest?" What does that mean? What kind of ditch? ”

"Uh......"

Aji said, "It's the sewage pipes, sewers, etc., we drilled in the leprosy village." ”

"Really?"

Meng Chao narrowed his eyes and said, "So, above this sewage pipe, specifically, where is the alloy gladiatorial arena?" ”

"Yes, it's a toilet." Aggie said.

"......" Meng Chao looked at him expressionlessly.

"No, no, no, it's not a human toilet, it's a monster."

Aji hurriedly explained, "There are a lot of vicious monsters imprisoned and concocted in the alloy gladiatorial arena, these monsters are huge, eat a lot, and of course pull a lot, so their toilets and sewage pipes are built very large, and it is the most convenient to sneak into the alloy gladiatorial arena from here." ”

"Okay...... Let's do it! ”

Meng Chao looked at Aji and said meaningfully, "I'll settle accounts with you when I come back." ”

He climbed up the shaft again.

Without the "little tail" of Aggie, his speed was significantly faster.

Climbing up to the top of the shaft, I smelled a rich and pungent smell.

Meng Chao had smelled a breath a hundred times stronger than this in the swamp full of bones in the depths of the wilderness.

Not to mention the ghost brigade training camp in the previous world, one of the various training courses that breaks through the bottom line of human beings is to teach them how to shield their five senses and lurk in various extremely harsh environments like stones.

The Colosseum has only just been put into operation.

A lot of entertainment isn't open yet.

There aren't too many monsters imprisoned here.

Moreover, monsters, especially super beasts with strong spiritual energy in their bodies, their excrement is also an extremely valuable resource.

Just as cow dung was dried for fuel in many poor places during the Earth era, monster dung is also worth recycling in Chaocheng and Leprosy villages.

The monster feces that were really sent into the sewage pipe had been processed several times, but it was not as pickled as Meng Chao imagined.