After about twenty minutes on the official track, the train suddenly turned into a narrower tunnel, and at the same time, the bumps in the body began to get worse.

Through the cracks in the steel plates nailed to the outside of the window, Qi Lin looked out with his night vision, only to see the train entering an old subway tunnel, and on the cracked tunnel wall, you can also see those dusty advertising light boxes, some extremely famous trademarks and stars of the old era continue to flash in front of Qi Lin's eyes.

This group of people, in order to open up a hidden driving route, actually secretly connected the abandoned subway tracks left from the old era with the underground transportation network of the shelter!

In order to save materials and shorten the construction period, a large part of the underground transportation network of the shelter was directly integrated into the existing subway system, so that the track specifications of the two are exactly the same, and the connection can be carried out perfectly.

Of course, according to Huaxia standards, not only the subway tracks, but also the specifications of the railway tracks on the ground are exactly the same, and the track gauge is 1435 mm.

Although this section of the subway was abandoned, it was not damaged by the war, and Qi Lin could even see that there were still many discarded tents, suitcases and huge amounts of household garbage in the waiting area on the other side of the tracks—after the outbreak of nuclear war, many refugees who could not enter the shelter in the first place almost poured into the subway and spent a long time in it.

Retracting his gaze from the window, Qi Lin glanced at the interior of the carriage without any lights, in addition to the iron cage where a large dog was kept, there were several large boxes piled up in the corner of the carriage, and the surface of the boxes was covered with a layer of dark green tarpaulin.

Qi Lin was not interested in what was in the box, he casually found a seat that looked sturdy, sat down, opened his backpack, and took out an oval-shaped can from it.

This is a canned braised pork, with a circle of army green paper pasted on the surface of the can, marked with the ingredient list, manufacturer and expiration date in Chinese, from the above information, this can should be the military supplies of the old era Chinese army, after the war, it was in the underground black market of the shelter.

Canned food has been expired for half a year, but military rations can actually be eaten with or without expiration, and the so-called shelf life is actually just a "best tasting date".

When Qi Lin was a mercenary, he would often buy expired military rations from the logistics department of those regular armies at a lower price, and in fact, the taste and texture of these expired military rations were not too bad, of course, they were not much better.

Qi Lin had just touched out a mini can opener, and suddenly there was a loud "bang" above his head, and Qi Lin quickly jumped up from his seat, jumped behind a large wooden box, and looked up.

Something hit the roof of the carriage, causing a circular depression with a diameter of more than a meter to appear on the top of the carriage.

"Wow!! Woohoo!! ”

The large dog in the cage, which was resting on its stomach, was also awakened by this loud noise and barked wildly.

"Bang!"

The door connecting the carriage in front of it suddenly opened, and a big man with a double-barreled shotgun in his hand and only a dirty vest stained with engine oil stains rushed in, he first glanced at Qi Lin, and then paid attention to the top of the carriage.

"Laifu, stop screaming! Be quiet! ”

The big man yelled at the dirty dog, and the big dog whimpered twice and obediently lay down.

"Above...... There is something. Qi Lin pointed to the top of the carriage and whispered.

"yes, I know." The big man nodded, his hands clutching his shotgun, staring at the top of the carriage.

There, there was a slight scratching sound, which was enough to prove that it was not a dead thing like cement or stone that had been smashed on the roof of the carriage, but a living thing.

Moreover, it is very likely to be a mutant creature that is not weak.

The train travels quite fast in the subway tunnel, and it can jump directly onto the roof of the car, and before it is thrown out, you can see that the thing on the roof must have a lot of agility and strength.

Although the roof of the carriage has been reinforced with many cross-welded steel bars, the protection of this steel mesh in the face of powerful mutant creatures is not foolproof.

As far as Qi Lin knows, there are more than a thousand mutant creatures that can use their claws or teeth to cut and bite off ordinary steel bars in the wasteland, and in front of some mutant creatures that can secrete corrosive and strong acids, protective measures such as steel plates and barbed wire are even more useless.

"Do you have a gun?" Dahan stared at the place where the voice came from, and asked Qi Lin softly.

"Nope." Qi Lin shook his head, in order not to get into trouble when he entered the station for inspection, all the metal items on Qi Lin's body were a belt buckle, a nail clippers, and a mini can opener strung to the key chain.

"Take it, pay attention to yourself, although we don't guarantee the absolute safety of passengers on this trip, but if you accidentally die in the car, it will still bring us a lot of trouble."

As he spoke, the big man untied a long nylon sleeve from his belt with one hand and threw it to Qi Lin.

Qi Lin grabbed the nylon sleeve and pulled out the contents - it was a thirty-eight-centimeter-long 56-type three-edged military thorn, although it was worn a little, but the tip part was polished very sharp.

"We're probably in trouble, there's a big guy on the roof......," the big man said.

"Have you ever encountered this monster before?" Qi Lin held the three-edged military thorn in one hand, and picked up a half-meter-long steel bar covered in rust from the ground with the other.

"Nope." Dahan shook his head, "I've run this line dozens of times back and forth, and this tunnel is as familiar as my own home, but I've never encountered a bigger monster other than bloodthirsty rats and mutant beetles." ”

"Is there anyone else on the train? Call everyone here. Qi Lin proposed.

"It's just me and my wife on this train, and she's in charge of driving." Dahan said.

"So, the two of us have to get rid of that monster above, right?"

"If this monster doesn't give up." Dahan took a deep breath.

Qi Lin also raised his spirit, although the high-level mutated creatures were relatively large, but there may be exceptions no matter how you say it.

Like the wasteland, a monster similar to the "Licker" in Resident Evil, it is only more than two meters in size, but it has a strength rating of up to E level.

As for the thing on the roof of the train, before seeing its true face, even a veteran like Qi Lin didn't dare to judge it easily.