After about half an hour of travel, the passage in front of it was suddenly cut off by a longitudinal cave, the width of which was about ten meters. Lu Su shone a flashlight on the front, and the messy footprints continued to extend forward at the other end, it seemed that after Liu Mengyuan and they walked here, they let the earth walk whale to dig a passage longitudinally, cutting off the entire passage.

"How is this going to go, little comrade, can you copy a bridge or something?" A demon slayer asked.

"There's no way to replicate something that long...... Jump over it. Lu Su said.

"Ten meters, you're kidding!"

"I'll jump to show you!" Lu Su made a standing long jump, the distance of ten meters was a bit big, but when he fell to the side of the cave, he should be able to jump over it with a little bit of strength there.

"Don't, we know you can do it, but we can't." The demon slayer said, and then asked Yan Slash, "Captain, let's just go over the ground instead." ”

"Liu Meng originally wanted to delay our time, and if we change the route, we can only waste more time." Yan Diedie said, "You guys go back, let's just go over." ”

"Captain, don't leave us behind." He said pitifully.

"This time it's reconnaissance, not a battle, just a few of us can go...... You go back and follow Captain Mu's instructions, and I'll radio you if there's a situation. ”

"Yes, Captain."

"I'll jump first!" Lu Su jumped over a distance of more than seven meters in one breath, and when his body was about to fall, he grabbed the hole wall on the side, bowed his body and borrowed strength on it, and then ran over, habitually rolling on the spot. This one rolled into a thin mud.

Worm Ting's method is very simple, jump to a distance of five meters, send out demonic power from the palm of her hand to absorb the cave wall, crawl over like a gecko swimming wall, land lightly, and say proudly: "I'm amazing!" ”

"Awesome!"

Lu Su had never learned this technique of using demonic power to adsorb, and no one had taught him.

Yan Chop Butterfly is a human being, he can't jump that far, he ran out of the "cliff", stabbed into the cave wall with a knife, swung his body over, and successfully crossed it after two repetitions.

When the people in the rear saw the three of them crossing the ten-meter-wide moat, they could only sigh with admiration.

"Hey, I can't jump!" Long Kui jumped on the other side and said, "Come back and take me." ”

"You go back, you don't have to come with us." Lu Su shouted over there.

"I don't want it, I'm going to go with me."

"I'm bored, go back!"

No matter how much he shouted at Lu Su, he didn't care, and the three of them walked towards the depths of the cave without looking back, and they could speed up and move forward without shaking off those guys who didn't walk fast.

Along the way, they encountered many more places like this, and the longest one was two longitudinal holes connected into one, and it wasted a lot of their time crossing these moats.

Lu Su vaguely felt that time was of the essence to Liu Mengyuan's plan.

"We're probably going to make a big mistake." Yan Chop Butterfly said.

"Why?" Lu Su asked.

"It's just a feeling that there's something terrible waiting for us up ahead."

"Alas!" Lu Su could only respond with a sigh, how could he not feel this way, the so-called "second surprise" must be a very terrible thing.

Although they ran through the cave at full speed, it also took three hours to reach that place. In fact, it was not the end of the cave that was reached, but at some point, the footprints disappeared, and above them, there was a hole where a dim light came in.

Looking up at the sky outside, it was already evening, and ominous red clouds were burning in the sky, as if red with blood.

From the top of the vertical hole, the first impression was that the air was much cooler, and when they looked around, they saw that this was a factory, and it was a factory on the outskirts of the city. …,

The opening of the vertical hole is in the middle of a factory building, and it is surrounded by big-bellied machines painted army green, crisscrossed by pipes and dense indicator instruments.

Said to be a factory, and the general factory is a little different, there is no smell of chemicals, there is a smell of disinfectant water in the air, when he saw the words on those big-bellied machines, Lu Su realized: "It's a water plant." ”

"Oops!" Yan Qidie said, "It turns out that Liu Mengyuan fought this idea. ”

"Hey, what's the idea, is the water flooding the golden mountain?" Insect Ting said.

"Poison, stupid! Everyone in the city has to drink tap water every day. Lu Su said that this is almost obvious, Liu Mengyuan came to the waterworks to visit the water purification system.

They walked out of the empty factory building, and there was not a single living person in sight. Outside, there are three circular pools lined up in an open field, each with a straight platform leading to the center, to which the master worker can walk to take a sample of the water, and if viewed from above, the three pools are like three clock dials pointing at different times.

In addition, the water in the first pool is a bit turbid and yellow, and the second and third pools are very clear, which are the three water purification processes, filtration, purification, and disinfection.

When I was a child, the kindergarten organized a visit to the water plant, and I was very excited to see the huge water pump and thick pipes. At this moment, Lu Su's mood was as if he had walked into a room where murder had occurred, and what was about to appear in it made him feel uneasy.

For a moment, he suddenly had a fantasy that Liu Mengyuan was actually just passing by here, and it was not the idea of getting tap water, but when he saw a bloodstained uniform next to the pool, this fluke illusion was also shattered.

"What about the people here?" Insect Ting asked, the blood-stained dress on the ground was a dark green vest with many pockets on it.

"There are two possibilities, one is that Liu Mengyuan heard that the water bill for this month was 100 yuan, and in a fit of anger, he beat the worker's nose to bleed, and then the worker's master took off his clothes and ran away; The other is ...... He killed all the people here, and they ate the corpses. ”

"Can you be a little more serious at this time?" Yan Chop Butterfly said.

"Good, serious!" Actually, what should have happened happened five hours ago, no, eight hours ago, and their role now is just passive discoverers.

The first pool of water and the second pool of water seem to be the same, the three of them walked to the third pool of water, and the double-filtered water entered this pool, chlorine was added to disinfect it, and then it was discharged into thousands of households.

The pool is more than five meters deep, but it is very shallow under the refraction of the water. They stood on the water intake platform in the middle of the pool, looking down at the clear water, and there seemed to be nothing unusual in it.

"Probably not here!" Lu Su pointed to management, "Maybe in there." ”

"Let's follow the management to find it!"

"Hey, what's that thing for?" Insect Ting pointed down, and Lu Su looked in the direction she was pointing, and a small cylindrical box like a solid air freshener was attached to the wall of the pool.

Poison? No way, it's too small.

"Who knows, get down to business!"

They walked up the pipeline that discharged chlorine, and along the way they saw several blood-stained clothes, and in one corner Lu Su even saw a bloody head. These workers who were at work probably would never have dreamed that they would become Liu Mengyuan's target in the suburbs.

The pipes went all the way to a large factory building where there was a very large machine that was used to produce chlorinated water, and the air was filled with the smell of that disinfectant. Lu Su turned his palm and looked at it backwards, about eight hours ago, the workers here suddenly looked outside, and then they ran out in fright, but Liu Mengyuan and his group did not come in. …,

"It's strange they didn't come here." Lu Su suddenly thought of the small box in the water just now, "Could it be that that thing just now is poison?" ”

"Go back."

When he hurried back to the No. 3 pool, Lu Su said, "I'm curious, what kind of poison do you want to make everyone in the city get hit?" With so much water, even if you pour a bucket of cyanide into it, when diluted, you will only be blind. ”

"It's not what matters, it's the most important thing to stop this from happening." Yan Chop Butterfly said.

When he came to the edge of the pool, Lu Su turned his palm upside down, and sure enough, a person jumped into the water, stuck the box there, and then dived down again. He undressed and was about to go into the water, but Yan Butterfly stopped him: "Hey, if it's really poison, you will die inside." ”

"Well, what then? Oh yes, turn off the main water valve. ”

He didn't know how much of an effect this would make, but in eight hours, many people in the city drank tap water, and now all he could do was make amends.

After screwing the valve, there was a snoring sound in the pipe because there was no longer any water flowing, and then the radio of the butterfly suddenly rang, and he pressed the switch, which was the sound of a cicada under Kinoshita.

"Old Yan, where are you now?"

"Waterworks."

"Sure enough, I guessed it, there is a big mess in the city now, I guess it may have something to do with Liu Mengyuan."

"What kind of mess?"

"A lot of people got sick, a disease they'd never seen before, with a fever and a constant desire to drink water."

Yan Qidie frowned, and said after a long time: "I know, Liu Mengyuan is not poison, it is a virus. ”

"Is this what is called the 'second surprise'?" On the other end of the radio, Kinoshita said, "Come over now, maybe I can help." ”

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