The whole city was extremely quiet in the middle, except for the cold wind that whistled by, and no loud human voices could be heard.

Yang Fan found a room and pushed the door in.

The decoration in the room surprised Yang Fan, the beautiful, crystal clear ice ornaments are the unique scenery of Snow City, even in the house, all kinds of ice items can be stored in the house for a long time after special alchemy.

There was no one in this room, of course, Yang Fan couldn't find any useful clues, people with high force may not be strong in inference, not to mention that Yang Fan couldn't find even a trace of clues.

"Yang Chaojun, search, what's so special about this place?" Yang Fan ordered his own system to be scanned.

After a burst of scanning light, Yang Fan followed the instructions and got some black powdery substances in a few inconspicuous places, which he didn't recognize, but the unique energy reaction on it was still detected by the system.

After collecting some of this black substance slightly, after seeing that there were no other discoveries, Yang Fan went to other houses, most of the houses found nothing, and a few found that kind of black substance.

Returning to the place where the first few people landed, Yang Fan took out his findings.

"This is...... Special alchemy materials! Crouch recognized this black substance, that is, Yang Fan had the help of the system, but the others found nothing.

"It seems that there are alchemists involved, but strangely, where are the people here?" This matter is extremely strange, alchemists and immortal cultivators are different from the demon path, they don't need to kill to get any benefits at all, "It seems that things are a little complicated, let's go together, don't separate, avoid being hit separately!" ”

Several people slowly searched for it in the city, and when they came to a place and were about to walk over, Yang Fan suddenly stretched out his hand to block everyone, "Wait a minute!" ”

Several people looked at him.

"Well, I think there's something wrong with that building!" Yang Fan stretched out his hand and pointed to the buildings at the end of the street.

Crouch hesitated for a moment, then took out a palm-sized map from his own and spread it out, and after glancing at it, he looked at Yang Fan: "Do you know what that place is?" ”

"I don't know ......"

"That's the city's water filtration hub! All of the city's water flows through here! Crouch didn't say much, but after some explanation, he led the way there.

"How do you know there's a problem there?" Hao Yan patted Yang Fan's shoulder and asked.

"Instinct it!" Anyway, it's impossible to explain that I've been turning on the system's search function.

Approaching the water supply transfer station, a heavy stone gate is used here, which basically has no protective ability, but it is quite magnificent, and it seems that the guy who was in charge of this place before was a good man.

"I'll do it!" Needless to say, Xiu Ling stood up, and anyone with a discerning eye could see that this guy was the main cultivator of the earth and stone class.

Pressing his hands with special gloves on the gate, a rectangular formation appeared, and the next moment, a small door appeared on top of the originally closed gate, which could accommodate one person to pass through.

The initial formations were basically circular, and the other shapes of alchemy arrays were all produced after later modifications, and this time Xiu Ling used this rectangular alchemy array just right, which illustrated his erudition.

Everyone deceived and flashed into the door, and like the outside world, this place is also quiet, but this is not surprising, and the goal here is particularly obvious, if there is a problem with the water supply transfer station, the problem is naturally related to water, so you only need to go inside to check the reservoir and filter tank and the like.

After approaching a few pools, the results of several people's inspections were all fine, and they couldn't help but look at Yang Fan.

Yang Fan picked up a handful of pond water, and secretly found that there was no problem after being tested by the system.

Letting go of his hands and shaking off some of the water droplets stuck to his hands, Yang Fan walked to the other side, and after tapping a few times on the edge of the pool, he held down that place with one hand, he used the alchemy array that Xiu Ling had just used, but this time the scope had changed.

As the effect of the alchemy array began to take effect, the wall of the pool began to disappear, revealing the situation inside.

"It's actually part of a pool!"

Apparently, this part of the pool was sealed.

Crouch walked in to observe, and there were still some subtle traces of the place.

"It's ...... The alchemy array is activated for a limited time, and there is still a little medicine left in the middle, so ...... Super Powerful Hallucinogenic Elixir! "Crouch quickly came to the conclusion that this guy was definitely not the first time this guy had done something like this.

"Humph!" Crouch's face was frosty, and at the same time there was a hint of disdain, "It's really expensive, this hallucinogenic drug is extremely effective, and it will volatilize quickly afterwards, and there is almost no trace of it, if it weren't for someone who painted a snake to seal this place and make it difficult to dissipate the potion, I'm afraid we won't find any traces!" ”

"Poisoning?"

"It's not as simple as poisoning a city and making people disappear into thin air, it's not common! And this alchemy array should be unique to a certain organization......"

"Bang!" Suddenly, a gunshot rang out, and a bullet flew from the outside world.

However, the firearms in this world are not so powerful, and the other party seems to have underestimated the several alchemists here.

Xiu Ling didn't have time to react, and so did Mei Ling, but the other three reacted instantly, Yang Fan was the first to react, but he couldn't use abilities other than alchemy, so he saw an extremely dim alchemy array appear under his feet, "Boom", and suddenly, a thick wall rose up, blocking the direction where the bullet came.

"Poof!" The bullet actually shot through the wall, which surprised several other people, they didn't know this powerful firearm, the wall that had just risen was thirty centimeters thick, and it was raised from the cement floor here, and the strength was greater than the average, so they were all pierced by one shot!

Fortunately, Crouch reacted quite quickly, and at the same time as Yang Fan's earthen wall was raised, an alchemy array flashed, and the surrounding air immediately condensed and became an air brick, and Yang Fan wrote down his alchemy array.

The bullets that pierced through the walls were blocked by the air bricks, but this time the incident was clearly not going to end there, and a large wave of people dressed in dark gold rushed up from all directions with cold weapons and guns.

"Ignorance!" These were Hao's words, and after he finished speaking, he put his hands together and formed an alchemy array in his hands, and then with a push, this alchemy array flew towards a group of people rushing forward.

As soon as this alchemy array left his hand, it turned into flames, but these flames condensed and did not disperse were still the previous alchemy array patterns, when they got close to those people, the alchemy array suddenly changed, and then a huge flame erupted from it, generating a huge explosion, and dozens of people were blown up beyond recognition in an instant.

This is a national-level alchemist, the power is quite powerful, of course, there are still shortcomings, Yang Fan thought, if he really reaches the atomic level of alchemy, he should be able to directly generate an alchemy array under the opponent's feet, but he is afraid that his battle record will be doubled several times if he is unprepared!

"Damn it!" Xiu Ling and Meiling were very annoyed, they didn't react to the raid of these guys, and they thought it was a rather humiliating thing.

Xiu Ling struck the ground with both palms, and as the alchemy arrays continued to generate and derive one by one, the surrounding area was covered with formations.

"Dirt Gun Forest!" Large swaths of rock spears burst out of the ground, stringing the men into strings.

Meiling jumped into the water, and an alchemy array was accompanied by many small alchemy arrays, and dozens of different complex formations appeared in front of her.

"Water Dragon Strike!" A thick column of water rushed out, the front section was slightly dragon-shaped, as soon as this water dragon appeared, small control formations began to appear in various parts of its body, and under Meiling's control, this water dragon continued to change its posture and swept through the surrounding people.

But for a moment, the other party was no longer standing there intact.

Yang Fan glanced at Xiu Ling and Mei Ling, the alchemy array of these two people he had just recorded, but it was a high-level alchemy array use means, multi-manipulation and micro-manipulation, controlling multiple formations and controlling different formations at the same time to achieve their own goals, this required extremely high proficiency, although Yang Fan had memorized their alchemy array, but without practice, he could not use this advanced technique.