There are several auxiliary passages in the metro tunnel of Line 1.

When Line 1 was built, the construction party had considered the occurrence of accidents, and these auxiliary passages would help the victims to get out of the subway tunnel, so as to prevent a series of rescues, collisions and other incidents that may occur in the future.

However!

The engineers who built the subway tunnel at the time probably never dreamed that their humanized design would bring great hope for human survival.

With the help of these auxiliary tunnels, the survivors lurking underground can climb to the surface and search for supplies to survive in the corners where thousands of corpses are unnoticed.

The auxiliary passage that Song Ziyu is taking now is one of the branches.

Here, every few tens of meters, one or two military fighters are sitting to guard and respond.

Chen Xi took out the identity nameplate of the staff and opened the road directly, and soon asked about Li Lao's trace from the soldier's mouth.

When he learned that Li Lao had ventured to the surface in order to catch up with the exploration team that could not return, Chen Xi was completely panicked.

"You still have you, take my identity nameplate, and immediately report back to the staff headquarters, so that the headquarters can mobilize people to support!" Chen Xi stuffed his identity nameplate into the soldier's hand, and told him very cautiously: "Be sure to be fast, don't delay on the road." ”

The soldier received the order, took the identification plate, turned around and ran in the direction of the station.

Looking at the soldiers in the distance, Chen Xi gritted his teeth and said, "We want to go to the surface!" ”

As soon as these words came out, the soldiers stationed at the entrance of the passage were shocked: "Chief Chen, you must not go if you go up to die for nine deaths!" ”

"Why can't I go?" Chen Xi asked.

"For your safety." Said the petty officer stationed there.

Chen Xi sneered and said, "Don't talk nonsense, you go and get me three sets of biochemical protective suits!" ”

It seems that Chen Xi is determined to go up.

The officers stationed in the passage were far inferior to Chen Xi, so naturally they couldn't do it, and no one present could convince the girl, so they could only be ordered to take the biochemical protective suit.

The three of them changed into protective suits and walked towards the surface.

There is a shaft at the entrance of the auxiliary passage, through which you can climb up to the inaccessible auxiliary mezzanine, many of which were originally used as fireproof and earthquake-proof layers, and now become an important passage to hide from zombies.

With a long loop of stairs and slopes, the crowd headed towards the surface.

Finally at the exit position, Chen Xi saw the soldiers arranged here to guard the retreat again.

"Where is Elder Li?"

Chen Xi grabbed the soldier and asked.

"At the Zenith!"

The soldier said.

"Damn, why didn't you stop him?"

Chen Xi was furious.

"Who can stop it?" The soldier said angrily.

Chen Xi pushed the soldiers away, and then continued to walk towards the surface, followed by Song Ziyu.

The entrance to the safe passage is open in a building next to the subway station.

The building is by far the cleanest area where zombies have been cleared, so everyone can safely reach the surface.

……

This is the first time Song Ziyu has seen what the ground will look like fifty years later!

The dim sky was as low as four or five o'clock in the morning, and a strong cloud of smoke hung around it, and the sky was covered with black goose feather snow.

"Even if you wear protective clothing, try not to come into contact with these dusts with strong radiation, otherwise it will greatly shorten your life." Chen Xi, who had wrapped himself tightly, said angrily.

Looking at the northern capital, which had been reduced to hell, Song Ziyu couldn't help but ask, "Who did it?" Who is going to destroy this world? ”

Chen Xi shook his head, and then muttered, "There is no point in talking about this question now, let's find a way to deal with Li Lao and them." ”

As he spoke, Chen Xi took out a walkie-talkie and was dialing in to try to contact Li Lao.

Soon, Chen Xi got a response, but the news he brought was not good!

On the way to meet the exploration team, the people led by Li Lao were gambled by the zombie tide in the Zenith Department Store.

"Damn it!"

Chen Xi stood in the business building outside the underground station and looked at a building in the distance and said, "That is the Zenith Department Store, we must find a way to get Li Lao and them out of trouble." ”

Song Ziyu looked at the building in the distance and found that the streets were densely packed with zombies, and the number was so large that it was impossible to count.

The streets have been blocked, and such a horrific scene is jaw-dropping.

"I'm afraid this situation is not easy to handle!" Ah Fa, who had always been silent, suddenly spoke.

Chen Xi was also at a loss.

Ah Fa said lightly: "With so many zombies, it is almost impossible to retreat from the road. ”

"Once the fight starts, the zombies will gather more and more."

"Although these monsters have bad brains, their sense of hearing is quite sensitive."

"The swarming zombies can make it difficult to escape."

"It's hard to force the rescue, and even get into it yourself."

Chen Xi nodded, and couldn't help but sigh.

Just when everyone was at a loss, Song Ziyu spoke:

"I have a solution."

"What can you do smartly?" Ah Fa asked.

Song Ziyu thought for a while and said, "Let's go to the sky." ”

Immediately, Song Ziyu said his thoughts.

After some elaboration of the idea, Chen Xi's face showed joy, and Ah Fa praised it even more.

"You can try this method, and I'll call someone to help." Chen Xi said.

……

A large number of soldiers, each carrying a large amount of hemp rope and load-bearing pulleys removed from abandoned subway locomotives and elevator shafts, arrived at the surface of the meeting.

Song Ziyu took everyone to the roof of the office building, and then measured the opposite side.

To get from the entrance and exit of the metro station to the Zenith building, it is necessary to erect at least five ziplines, which is an almost impossible task.

Because...... For a single zipline, the street between the buildings is a full eight metres wide!

At such a distance, with no one on the other side answering, it is simply impossible to achieve.

But that's for ordinary people!

Song Ziyu looked at Ah Fa and said, "Try it?" ”

Ah Fa was a little speechless: "Song Ziyu, you treat me as a wronged seed, how can you find something to do?" ”

"Saving people, your mission."

Song Ziyu said.

Ah Fa touched his head, much like the dog head that blew up Song Ziyu.

"I'm doing this work alone, and you're going to have to suffer with me."

Ah Fa said by name.

Song Ziyu nodded and said, "Then I will sacrifice my life to accompany the gentleman." ”

So the two fixed one end of the hemp rope on the water tank on the rooftop, and then the whole circle of hemp rope made an incredible action in front of everyone!

I saw the two of them running for a while, and then jumped out of the rooftop.

"Crazy! The street is eight meters wide! ”

"Oops, hey, I fell."

"Alas!"

"Hundreds of meters high, people must not fall to pieces?"

Everyone talked about it and felt that these two goods were finished!

However......

When everyone walked to the rooftop, they saw an incredible scene!

I saw that there were two trapeze artists hanging at the waist of the building opposite.