Doomsday Simulation: This Is Not a Game

Chapter 67 Traffic line upgrade!

Song Han had already tasted the sweetness of this function the first time he used [Entire Safety Zone Reinforcement Once].

Not only were all the entrances and exits of his building reinforced as a whole, the windows were also sealed, not to mention, even the concrete grade of the entire building had changed visible to the naked eye!
"It's just what does 'the entire traffic line is upgraded once' mean? The traffic line refers to the underground passage I'm standing on now?"

In the darkness, Song Han, who had just blocked the entrance and exit of the underground passage to the south, just happened to walk to the intersection of the underground passage, and stopped to look around suspiciously.

The height of the underground passage is about three meters, and the left and right width is estimated to be about six meters. It stinks because of the abundant rain in the summer months.

This is the only underground rainwater sewage treatment pipeline connecting the old city, so the time is relatively long.

The walls on both sides are basically made of masonry or untreated concrete. Due to the long-term disrepair, they have begun to peel off piece by piece, and then filled with various dark green moss. Going to is a dilapidated and dirty scene!

Of course, in the current situation of no light and no electricity, no one except Song Han can see the overall dilapidated scene of this underground passage!
And Song Han's location is at the newly dug intersection in this underground passage.

To the west of this intersection is the passage leading to the community, which is also the passage to his future farm, when Song Han just came down;

In order to prevent zombies from flooding the underground passage, they didn't dare to make it bigger. They just dug a two-meter-wide and two-meter-high hole. In order to facilitate the transportation of the resources produced in it, the width must be at least six meters wide.

And to the east of this intersection is the road leading to Dongkang Park that they have been digging with great effort;

According to what Qin Shuo and the others said before, they should have basically dug this passage to the underground of Dongkang Park.

After all, they were forced to change the direction of their excavation twice just because they encountered two veins of a gold mine and a copper mine!
Not only that, the things they dug out now are mainly red rocks and soil. It is estimated that they will soon face a new iron mine in the middle of the two veins of gold mine and copper mine!

For them, this channel has no meaning.

But for Song Han, this is a rare area where gold, copper, and iron veins intersect!
As long as the automatic drilling machine is placed in the middle of the veins where the three veins intersect, you will have a steady stream of three kinds of ore resources to use!

Even as the soil continues to mutate, the automatic mining machine may even bring out some resources such as granite!
And my own bank building is located on the north side of this cross underground passage, and on the south side is the staircase leading to the ground and the passage leading to the city!

In fact, Song Han only needs to move the stone wall blocking the south side a little to the back, and seal the stairs leading to the ground outside together, which can save some materials for sealing the stairs.

But just now, Song Han suddenly thought that in the future, he can also seal off all the intersections between the four residential areas on the ground, and then create an above-ground safety zone surrounded by high walls!
And this staircase leading to the ground of the garbage collection station may be the entrance and exit of the huge safety zone of the Trinity in the future!
So Song Han did not hesitate to include the stairs leading to the ground into this underground transportation line, and when the resources come up in the future, he can transform this garbage collection station and make it a real garbage collection station. The entrance and exit of the safe area!

Thinking of this, Song Han immediately issued an instruction to the system without hesitation:
"I choose [upgrade the traffic line as a whole]!"

In the darkness, in the underground passage clearly seen by Song Han's skill [Insight], some changes began to slowly occur!
First, the moss and peeling marks on the walls began to disappear slowly, replaced by neatly arranged pieces of old-fashioned red bricks, making the entire passage full of the decorative taste of the last century.

The sewage and stench on the ground also began to disappear slowly, and the original concrete surface began to recover on the platform, and there was no moss or filth in sight!
So in a blink of an eye, the passage seemed to have been redecorated. Although it was still not very exquisite, it was much cleaner after all. If it weren't for the darkness that covered the passage, this underground passage would have been a little bit darker. The taste of the antique street outside!

Song Han squatted down in the ditch between the two platforms and took a closer look.

The sewage ditch that was originally stinking to the sky and full of sewage flowed across the river is now clean and there is no debris at all!
"So the upgrade at this stage is just to repair the damaged walls, as well as the garbage and sewage in the passage."

Song Han stretched out his hand to touch the height of the sewage ditch, stood up again, and looked towards the road leading to the farm:
"Since this is the case, the granite wall leading to the urban area must be stronger, and even if an iron gate is to be installed, it must be an iron gate with better airtightness, so as to prevent the rain and sewage from the urban area from pouring in. !"

There is so much rain in summer that people are desperate. Song Han doesn't want the underground passage that he finally cleaned up to be messed up again by the rain and sewage!
It's just about this point, Song Han really worried too much.

The drainage in the city is not good, basically because there are many reinforced concrete buildings and the hardening of the road foundation, so there is no place to digest the rainwater.

Therefore, once the city's drainage system is not done well, or it suddenly encounters short-term heavy rainfall and the drainage is not timely, it will immediately lead to urban waterlogging!

But now, with the great mutation of plants, countless reinforced concrete floors have been destroyed and penetrated by various plants, which has led to a large-scale increase in the city's greening, and even inadvertently promoted the city's self-digesting function to a great extent. promote!
The current human city has basically become an ecological sponge city that is designed and constructed by plants and perfectly displayed!

This is also the reason why this group of people can survive in the underground passage for so long!
If this sponge city hadn't absorbed and digested a lot of rainwater, how could the old city's rainwater and sewer network established before the cataclysm be able to accommodate the terrifying amount of rainwater in Xiayue after the cataclysm? !
(End of this chapter)