Building infrastructure in a digital world

However, Ning Shi's former identity and the fact that she was able to detect the source of pollution fragments meant that she might know something.

"I haven't seen it, but someone once told me about the pollution source fragmentation." Ning Shi's words were as expected by Su You.

Sure enough, she did know some information.

"My understanding is not deep. She only said one thing to me at that time. If one day I encounter a broken pollution source, then I must destroy all the pollution source fragments as soon as possible."

After saying this, Ning Shi paused, and then explained: "I didn't mean not to talk about it, but I just didn't think of it for a while."

This was not an excuse for Ning Shi. She had just been busy building a barrier, then getting everyone up to speed, and then investigating the source of the pollution... This happened a long time ago, so long ago that she was not even a magician apprentice at that time.

If Su You hadn't asked just now, she would have really forgotten.

Su You didn't care and didn't think she was lying. If she really didn't want to say it, there was no need to answer now.

"Since it needs to be eliminated together, can you now find the locations of several other pollution source fragments?" When Su You asked, she was also thinking about the reason.

After thinking for a while, she seemed to understand something.

These pollution source fragments are originally integrated. They are only temporarily separated, which does not mean that they cannot be integrated.

If they don't have a way to destroy these fragments at the same time, as mentioned in the introduction, these fragments will escape after being destroyed.

Their escape is definitely not aimless, but they escape to other fragments and then merge with them. In this way, the fused fragments will definitely be stronger!

After thinking about all this, Su You also heard the answer given by Ning Shi.

"I can still find four fragments, but I'm not sure if they are all." Just like the previous stone fragments, the largest number Su You saw was 'Fragments Four', but this only shows that there are at least four fragments. Four doesn't mean there are only four fragments.

"Anyway, let's go take a look first. Can you remember the location here?" Su You had seen the map before. Originally, her map was bright, but after the pollution appeared, her map was also locked. It can be opened, but it's pitch black.

Although they are still in the space of the underground stairs, they can't tell the north, south, east, and west because of the dark surroundings.

"Okay, I'll just make a mark." Ning Shi made a mark here with light elements, and then took everyone to the locations of the next few pollution source fragments.

After running around for more than half an hour, Ning Shi had found all four fragments that he could sense. Including the original one, there were five fragments in total.

There are five fragments, but the names are not one to five. The fragment with the largest serial number is 'six', and they have only found 'one, two, three, five, six', and there is one missing 'pollution source fragment - four'.

Su You told Ning Shi that a piece was missing. Although Ning Shi didn't know how Su You could tell that a piece was missing, she still looked for it seriously, then frowned and shook her head.

"No, I didn't find new fragments. Within my sensing range, I can only find these five parts." Ning Shi actually wondered for a moment whether Su You had made a wrong judgment, but seeing that Su You Yuzu was so sure that there were six parts to the pollution source that she also began to wonder if she had missed anything. "It seems that someone deliberately didn't want us to find him." Su You couldn't help but sigh when she saw that Ning Shi couldn't find her despite her efforts.

Ning Shi seemed to understand something and did not continue to waste his magic.

"In this case... let's start solving these five fragments directly." The sixth fragment must exist, but it was deliberately 'hidden', so it was normal for Ning Shi not to find it.

But their time is running out, and they don't have time to find the last fragment for them. The top priority now is to get rid of the five in front of them first.

As for what will happen if all the contaminated debris is not solved at the same time... Su You can no longer think about this. Anyway, either clean up now, or they can leave directly with the return stone. In comparison, Su You will definitely choose the former. After all, there are still mermaid tribe here. There are many things unresolved.

What's more... things may not be as bad as imagined.

"Since they are to be eliminated at the same time, does Lord Su have any good ideas?" Ning Shi asked softly.

Although the 'simultaneity' here is not so strict that they must be destroyed within the same second, the time between the destruction of these five fragments must not be too long.

If the interval is too long, fusion will occur, and no matter what they do, it will be meaningless.

"The first method is to use explosives with long fuses." I can't say how long it is, but it will definitely be enough.

If you use explosives, you need to place the explosives first, then arrange the fuses to similar positions, and then ignite them at the same time...

Ning Shi was stunned for a moment: "..." It's really... simple and crude.

Su You couldn't help but smile when she saw her like this, and then rejected this method herself: "Although the fuse is long enough, the explosives are not enough, so there may be some problems with this method." Although each fragment only has one HP. Ten thousand, but five of them add up to fifty thousand.

Su You carried a total of explosives with a total damage of less than 30,000, which was definitely not enough.

In addition to the insufficient amount of explosives, this method also has a risk, that is, it is easy to be interfered by the outside world... What if a dark creature comes out and destroys it while the fuse is burning?

Or maybe some dark creature removed the explosives they planted?

Of course, these are secondary. The most important thing is that they are currently in an underground environment. Explosives cannot be used easily. Otherwise, if it collapses, the consequences will be disastrous.

"The second method is to arrange people to these five positions respectively, and then take action at the same time." This method should actually be something that most people can think of, but it is also the most difficult to implement.

First, because they have no communication channels, they don't know when the simultaneous action here will be.

Second, after the personnel are dispersed, the output capacity is reduced, and it takes more time for them to destroy the pollution source. The longer the time, the more likely accidents will occur.

The third reason is similar to the second one. It is also because the personnel are scattered, so once many enemies suddenly appear, they will definitely not be able to resist.

To sum up: theory exists, but practice is difficult.