The Nanjing Yangtze River Tunnel is a tunnel located between the Nanjing Yangtze River Bridge and the Nanjing Third Yangtze River Bridge, and is also an important traffic road connecting Jianye District and Pukou District. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 Before the collapse, it once became the first level of tunnel construction in Huaxia.

However, after more than a thousand years, the entrance to this tunnel has been deeply buried in various ruins, and the outside is covered with a thick layer of river sand, so that it is clear that Guhan and Mikoto Misaka are standing directly above the tunnel entrance at this time, but there is no trace of the tunnel at all.

"Right down here, my sword qi has discovered the huge space under the soil layer!" In order to find the exact population of the tunnel, Gu Han shot his sword qi into the ground, and finally found that there was a huge space below at a certain location, which should be the entrance to the tunnel.

So, the precious sword girl turned into a hoe and a shovel at this time, and dug an extremely deep hole in the ground, looking down from this opening, the hole inside was dark and swarthy, and I didn't know what the specific situation was in the tunnel.

"Bring this!" Gu Han took out two small nasal plugs from his dimensional pocket, handed them to Mikoto Misaka, and then stuffed two into his nose himself.

"What is this? Is there water in it? Seeing these two little nasal congestion, Mikoto Misaka was stunned, she didn't understand what Gu Han gave her this thing for.

"It's not a waterproof nasal plug that plugs your nose, it's an oxygen-powered plug that allows us to breathe pure air," Gu Han explained, "Don't look at these two things as small, stuffing them in your nose not only purifies the air of toxins, but also releases oxygen, allowing us sword wielders to survive in a poisonous or oxygen-free environment for a full 24 hours." ”

"I see! I can't imagine that your human science has developed to such an extent, unlike our free city, which has been almost 600 years old, but there has been no progress in science and technology! Mikoto Misaka exclaimed, and stuffed the nasal plug into her nose, and the wings of both sides of her nose were stretched out, making it look like a pig's nose.

"Ready, we're going down!" Gu Han said lightly, and then the first one jumped down from this hole, Mikoto Misaka smiled bitterly, but still followed Gu Han and jumped down.

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"Chairman Gu, I hope I can contact you if I have a communication, it's a communication from the headquarters of the 1st Defense Front" Gu Wudao, who was patrolling the guards and evacuation equipment in Yuzhang City, received a report from his secretary.

"First Defensive Front Command? What are they looking for me for? Could it be that Yuan Yan has started to attack! Gu Wudao had an ominous premonition in his heart, and immediately said, "Take it in, bring it in for me now!" ”

"Yes!" The secretary pressed it on the personal terminal, and Gu Wudao's personal terminal rang, and Gu Wudao immediately connected, "Hey, I'm Gu Wudao, the chairman of the Sword Committee, what is the matter with your headquarters looking for me?" Did Yuan Yan attack? ”

"Report to the chairman, there is no movement in Yuanyuan, and the first defensive front is still safe!" The person in charge on the other end of the communication hurriedly said.

"What's the matter with me?" Gu Wudao frowned, what is the commander of the first line of defense doing.

"Report Chairman, just now the four sword-wielding men who came back from outside the city said that they must see you, and also said that they are your apprentices and sons, we can't confirm it, so we can only come to you!" The words of the person in charge were full of suspicion, obviously he didn't believe that these four people would be Gu Wudao's apprentices and sons now, but the other party was conclusive, and the person in charge had to report to Gu Wudao in person!

"Come back from outside the city! Could it be that Ritsuren's stinky boy is back! Gu Wudao's face was overjoyed when he heard the news, but he quickly recovered his seriousness, and said sharply, "You ask them to wait for me in the headquarters, and I'll go over now." ”

"Yes!"

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"The oxygen content is 5%, chlorine is 3%, nitrogen is 60%, carbon dioxide is 20%, and other harmful gases are 10%, and the probability of death is high, so you can't breathe directly." This is the answer that the air detector tells Guhan. The air in this tunnel that has been closed for I don't know how many years is no longer for humans to survive, and if there is no hyper-oxygen breathing plug, it is estimated that Gu Han will be poisoned in it before he passes through the tunnel...... The personal shield has no resistance to toxins, and many sword-wielders did not die in the hands of Yuan Yuan, but were poisoned and died for various reasons, so the nitrox breath plug and various toxin detection equipment have become essential items for sword wielders, which is why Gu Han's dimensional pocket will carry these things with him.

"How, how does it feel? Can the environment inside the tunnel be adapted? Gu Han asked Mikoto Misaka beside him, and Mikoto Misaka nodded, indicating that he could adapt.

"Then keep asking for money!" Gu Han took out a flashlight, and there was once again a trace of light in this dark tunnel that had not seen light for hundreds of years, but unfortunately, the light of a flashlight was still too dim, and it could only illuminate a small area around Gu Han, and it was impossible to illuminate the entire tunnel.

Hundreds of years later, the original pavement of the tunnel is no longer visible, replaced by a layer of floating soil about a finger thick...... The floating soil is formed by the accumulation of dust over the centuries, and it looks like a thin snow in winter.

"It seems that when it was destroyed, there was a catastrophe in this tunnel!" Just a few hundred meters ahead, Gu Han saw no less than ten cars abandoned on the road, some of the doors were still open, obviously the owner fled in a hurry, and even the doors did not have time to close. Gu Han looked through the door and saw that there was a doll in the car that was covered in dust with only a metal skeleton...... It's a doll of a cute animal anthropomorphic sheep.,Gu Han saw it in the archaeological channel.,This is the very famous animation of Xiyangyang and the gray wolf before the big breakdown.,It is said that people at that time liked this animation very much.,It's the pride of Chinese animation.,Deeply loved by the audience of station b (readers who don't understand station b can go to station b to see.,Very interesting website.。 There is a saying that says: "My childhood was joyful and gray wolf, so good!!" ”

There were also vehicles that were not as lucky as the owners of the car, they did not open the door, and the pale white bones sat in their place, but the skull was missing, and they did not know where it went. Gu Han took a look, there were four white bones in the whole car, all of them were missing skulls, looking at the smooth knife marks on the broken part, Gu Han was sure that their heads were separated by extremely sharp blades, in other words, they died in the hands of Yuan Yan, otherwise they wouldn't have even had time to escape from the car.

What made Gu Han feel the most pity was the small white bone in the back seat of the car. It seems that she may have been only a little girl of seven or eight years old before her death, because she was still wearing a tattered flower skirt and lace lace, and it was obvious that the owner of this corpse should be a little girl who loves beauty.

Seeing this scene, Gu Han's heart suddenly welled up with infinite heartache, sad and lamentable, if Yuan Yan did not appear, then this child would definitely be able to grow up, enjoy perfect love, have children, and spend a happy life, instead of telling Gu Han her tragic experience with her own white bones a thousand years later.

"Should we bury them?" Mikoto Misaka, like Gu Han, is saddened by this tragic situation, this is the difference between the free man and the Moto-en, the free-man sees humans as the same kind, and in the eyes of Moto-en, the human being is a complete alien, even if this Moto-nee is a human in their original world.

"This ......" Gu Han hesitated for a while, it was not impossible to be buried, but there were so many bones in the tunnel, if they were all buried, I am afraid that a few days would not be enough. So intellectually speaking, Gu Han didn't want to do this.

But seeing the lace white dress with the broken sword, Gu Han's heart softened, since he met her, give her a proper home!

"Okay!" Gu Han nodded, "But this is only this time, we really don't have time to waste here!" ”

"I understand, it's been a long time since I've been so soft-hearted!" Mikoto Misaka nodded, she has come all the way from the era of great destruction, she has also encountered countless storms and weather, and she is used to seeing people who die, and she is rarely soft-hearted because of human bones.

This is also because the Nanjing Changjian Tunnel is closed, and neither humans nor Yuan Yan have almost never entered this place again, so so so many intact bones can be accumulated here. Outside, the bones of those human beings who died in the era of the Great Destruction have long been blown into gravel by time and wind, and turned into calcium in the soil.

Gu Han's hand gently pulled on the car door, and the dead car door that was originally locked was easily pulled open, Gu Han gently lifted the little girl's bones, and squared her to the edge of the tunnel to be cleared out of the ground, and there was floating soil around her, as long as the floating soil was covered, the little girl would be able to enter the ground.

"Wait, this is ......" Gu Han suddenly found that the pelvic cavity of this corpse was actually in the shape of a funnel with a large top and a small bottom...... Gu Han's face turned blue when he found this, and he filled in the soil indiscriminately, and left here with Mikoto Misaka...... It's really unlucky, could it be that Fa Ci Kindness would encounter such nonsense.

As Guhan and Mikoto Misaka continue to go deeper, more and more cars and bones appear in this tunnel, and there are many people who are worse than the family just now, and Mikoto Misaka is also very obedient and does not ask to bury them.

After a difficult journey of about three kilometers, we reached the middle of the tunnel and stopped our way...... Two buses overturned on their sides on the ground, completely blocking the already small road surface, and if you want to pass through here, you have to climb over the bus.

This is not a difficult task, but when he saw one of this bus, Gu Han suddenly felt a palpitation, as if there was something terrifying hidden in this bus.

(To be continued.) )