"It's just an illusion. What's there to be afraid of? Come during the day, come during the day." Jiang Fei said.

"Although it's better to come during the day, it's safer at night. Let's check it for a while. Anyway, there's nothing to do when you go back now." Xuan Yin said.

"But we looked around for a long time and found nothing. It was just a waste of time here." Jiang Fei thought about it and said.

"What do you want to do?" Xuan Yin asked.

"I don't think we need to stay here now. We should go to other places to see. Maybe we will find any discoveries." Jiang Fei said.

"What you said makes sense, then where did you say you were going?" Xuan Yin asked.

Jiang Fei pondered for a moment and said, "Have you discovered a phenomenon?"

"Oh, what phenomenon, come and listen to it." Xuan Yin said.

"According to those people, those people disappeared out of thin air from the east of the city gradually spread to the west, and ten people were missing in each place, and then they would not disappear again." Jiang Fei said.

"This is indeed a strange phenomenon, as if someone is setting up something." Xuan Yin said.

"What are you planning? Did you think of something?" Jiang Fei said quickly.

Xuan Yin shook his head and said, "I'm just guessing. I can't draw a conclusion yet. Wait until we can find out what elsewhere is talking about."

"Okay, let's go to the north of the city to check now." Jiang Fei said.

"By the way, I think there is another more important thing to do before I go," Xuan Yin said.

"Oh, what's the matter?" Jiang Fei asked curiously.

"We have to get a map of this Tiandu City first." Xuan Yin said.

"What do you want to do with a map? Are you still afraid of getting lost in such a small town?" Jiang Fei said in confusion.

"You will know then." Xuan Yin smiled mysteriously.

Then the two came to a grocery store, and Jiang Fei bought a detailed map of Tiandu City, which made him feel distressed because the price of the map was not low.

"I really didn't expect that this was just a illusion, and it wasted so many spirit stones of mine." Jiang Fei said in pain.

"With your current wealth, will you still care about such a little spiritual stone?" Xuan Yin said.

"If this is not an illusion, of course I wouldn't care, but this is an illusion. Spending spirit stones here is not a waste," Jiang Fei said depressedly.

"It's worth spending these spirit stones. You have to rely on this map to figure out the strange thing before you can get out of here." Xuan Yin said.

Jiang Fei spread his hands and said, "I hope you are right."

The two of them quickly came to the north of the city with the map. Just like before, they searched for a long time but found no clues.

"Let's go, I've found nothing here." Jiang Fei said weakly.

"Before leaving, I think you should mark it on the map, and by the way, mark the east of the city we went to before," Xuan Yin said.

"What's the mark?" Jiang Fei asked in confusion.

"You don't have to worry about this, just mark it." Xuan Yin said mysteriously.

Jiang Fei nodded, and then marked the map on all the places where people in the north of the city disappeared out of thin air.

After leaving the north of the city, Jiang Fei and the others came to the center of the city and the west of the city. Every time they went to a place, Xuan Yin would ask Jiang Fei to mark the place where people disappeared in detail.

"It seems that only the west of the city has no one disappeared out of thin air." Jiang Fei looked at the map and said.

"The map is so detailed, have you found anything?" Xuan Yin asked.

Jiang Fei raised the map and looked at it, then said, "This strange thing happened very regularly. It seems that one position will change every day, and the last position should be in the west of the city."

"What else?" Xuan Yin asked.

Jiang Fei shook his head and said, "I can only see these for the time being, but nothing else will be discovered."

Xuan Yin took the map, then put it in front of him, and said, "Now you can observe carefully and see what special places are there?"

Jiang Fei looked at the map again, and he frowned and said, "I still haven't found anything."

Xuan Yin shook his head, sighed, and said, "Didn't you find that the place where these people disappeared is connected like a formation?"

Hearing this, Jiang Fei quickly connected all the places where the people disappeared on the map with lines. He showed a shocked look and said, "It really looks like a formation?"

"Do you know what formation this is?" Jiang Fei continued to ask.

Xuan Yin shook his head and said, "The final place has not been determined yet, so I can't tell what kind of formation this is."

Jiang Fei frowned, then turned to look at Zi Ling and asked, "Do you know?"

Zi Ling thought for a while and said, "I feel like this is an ancient sacrifice array, but I don't know the last location yet, so I'm not sure."

"By the way, don't you have the ability to predict? Now you can predict where the next place will be," Jiang Fei said to Xuan Yin.

"This space is very strange. My abilities are limited and I can't calculate it here at all." Xuan Yin said.

"Oh!" Jiang Fei sighed helplessly.

Jiang Fei was very depressed at this time. Although he had discovered something, he did not know the final location. If the personnel disappeared when the final location appeared, it was very likely that the sacrifice array had been completed, and it would be unlikely to break it at that time.

"Although my abilities are limited, the final location should be in the west of the city." Xuan Yin thought for a while and said.

"Aren't you talking nonsense? The final position of the fool can tell that it is in the west of the city, but the west of the city is so big, how can we determine the real position?" Jiang Fei said.

Xuan Yin smiled and said, "Although we cannot determine the final location, we can narrow the scope according to the map."

"But we don't know what kind of formation is, so how to narrow the scope." Jiang Fei said.

"Although my abilities are limited, my reasoning ability has not been affected. I think I should be able to reason with my experience." Xuan Yin thought for a while and said.

"What are you waiting for? You can reason quickly." Jiang Fei urged.

Xuan Yin carried the map and observed it carefully, and soon he inferred several locations.

"How to infer so many locations?" Looking at the locations that Xuan Yin inferred, Jiang Fei was stunned. There were actually five locations, and they were quite far apart.

"What are you anxious about? These are just the positions I inferred. As long as Zi Ling determines the formation based on the position, isn't that enough?" Xuan Yin said calmly.

Jiang Fei was overjoyed. He quickly looked at Zi Ling and said, "Hurry, compare the formation you know according to the location on the map. I am really looking forward to it."

Jiang Fei was very excited at this time. He wanted to see what formation it was.

Zi Ling observed the map, then pondered for a while, and said, "Based on the markings on this map, these two points can be excluded, because they cannot form a formation at all because they are linked together."

"You see, there are only two missing places? What formations can the remaining three places form now?" Xuan Yin asked.

Zi Ling pointed to a place on the map and said, "If it is connected to this place, then it is a guardian formation."

"I think this place can be ruled out. After all, if you want to set up a guardian formation, there should be no such thing as people disappearing out of thin air." Jiang Fei said.

Xuan Yin nodded, then pointed to another point and asked, "What kind of formation is there?"

"If you connect here, it will be a huge trapping array." Zi Ling said.

"Oh, what type of trapping array is it?" Xuan Yin asked hurriedly.

"This is a great formation of heaven. The spiritual energy in the formation will be absorbed by the formation. At the same time, the formation will also absorb the vitality of all living beings in the formation. In the end, all living beings in the formation will die due to lack of spiritual energy and loss of vitality." Zi Ling said solemnly.

"Is it the Heavenly Essence Formation?" Jiang Fei was very shocked.

At this time, Jiang Fei was shocked so much that he didn't know who was so vicious that he wanted to use such a big formation to destroy all the creatures in Tiandu City.

"It's too early to draw a conclusion now. Let's take a look at what the last formation is." Xuan Yin said.

Zi Ling looked at the map and said solemnly: "This last formation is a large formation called Tianji."

"What, it's actually the Heavenly Sacrifice Formation." Xuan Yin showed a look of shock.

"Why did you hear that this Heavenly Sacrifice Formation changed drastically? Is there anything special about this formation?" Jiang Fei asked in confusion.

When Zi Ling mentioned the Tianjue Formation just now, Xuan Yin was still very calm, but now when he heard the Tianji Formation, his face changed drastically, which made Jiang Fei very confused.

"Tell him." Xuan Yin took a long breath and looked at Zi Ling and said.

Zi Ling nodded and said, "This Heavenly Sacrifice Formation is a sacrifice formation. Once completed, all living beings in the city will become sacrifices and be sacrificed."

"This is similar to the Tianjue Formation in front of you. It's all about killing all living creatures in the city. It's nothing special." Jiang Fei said.

Both formations were to destroy all the creatures in the Tiandu City. Jiang Fei was very puzzled. Why did Xuan Yin care so much about the Heavenly Sacrifice Formation?

"The Tianjue Formation only kills the creatures in the formation, and leaves a glimmer of life, but the Tianjue Formation does not leave any life. The most terrifying thing is that when the sacrifice is completed, this formation will summon a terrifying existence through the sacrifice." Zi Ling said with lingering fear.

"Summoned a terrifying existence? What kind of monster is that it actually makes you look at?" Jiang Fei asked in confusion.

"That is an ancient strange beast. Once summoned, it will devour all the creatures in this space. Even if I am the spirit of the artifact, it will not be listed." Xuan Yin said solemnly.
Chapter completed!