He Xi thought about it carefully when he heard this. Although he asked Ah Zhu to check if there were any demons, it did not include people infected by demonic energy, whether it was Ah Zhu or the guide butterfly, the animals he wrote would report the information he had discovered. Even if there were no demons, if they found that humans were infected, Ah Zhu should have told him.

He Xi pressed his hand on his chin and whispered: "It shouldn't be true. If it was the first situation you mentioned, someone was infected with the demonic energy, then Azhu would definitely tell me that if it was the second situation, the other party was also a demon-eliminating master. If he was infected, he deliberately hid the demonic energy. Azhu might not be able to detect it, but I think the second situation is unlikely."

"Why is it impossible?"

Without waiting for He Xi to answer, the white-faced fox was the first to complain: "Idiot."

Gu Wenyu: "?"

He Xi did not joke about Gu Wenyu, but explained seriously: "Because the breath is wrong, you should have discovered that there is no breath of powerful creatures on the plane. You and I are the most powerful beings on this plane. If the other party can completely hide the demonic energy, its strength should not be below you and me, and it should not be allowed to discover it. Just imagine, if it were you, could you completely hide the demonic energy?"

Gu Wenyu really thought about what He Xi said. If it were her, she might have been able to temporarily hide the demonic energy by relying on the white-faced fox's mental power, but not everyone has a powerful demon king hiding in the spiritual world, so what Gu Wenyu can do does not mean that others can do it too.

"If I don't rely on Xiaobai, it should be difficult for me to hide this demonic energy." Gu Wenyu said truthfully.

"Yes, you can't do it, so how can that person who is weaker than you in the assumption do it."

Gu Wenyu was a little discouraged and said, "Then I really couldn't think of the reason... But I swear that the demonic energy is still there, it will definitely be on this plane."

He Xi was also thinking again, and Gu Wenyu asked in his heart: "Xiaobaibai, what do you think?"

"Don't ask me, I didn't find any special aura anyway." The white-faced fox looked like he lacked interest.

Both the white-faced fox and He Xi said that they did not have a special aura. In fact, Gu Wenyu could feel the same problem, and Gu Wenyu couldn't figure it out.

A Zhu returned to He Xi's hand again. After hearing A Zhu's feedback, He Xi shook his head regretfully at Gu Wenyu, "It's still not."

"Is it possible... our direction is wrong. It may not be a person, but a thing. Someone brought something like magic weapon on the plane?" Gu Wenyu turned on the random guessing mode.

Although Gu Wenyu was guessing, He Xi seemed to have received some inspiration, "It may also be a mark or something."

"What mark?" Gu Wenyu didn't understand.

He Xi did not answer Gu Wenyu. He looked up at the top of the cabin, as if he wanted to look out of the ceiling to the outside of the cabin.

"It shouldn't be taken on the plane. As long as it's inside the plane, Azhu couldn't have been found... so it could only be outside the plane."

He Xi murmured to himself, "If it is a mark left by the demon race, it will be difficult to find a small mark even if you stand outside the plane. The demon race leaves the mark and leaves, so there is a demonic energy on the plane, but the demon race cannot be found..."

When Gu Wenyu heard this, he naturally said, "Because there is no demon clan at all!"

He Xi frowned, and finally the anxiety appeared on his face. He Xi continued to murmur: "What mark will it be..."

Before He Xi could come up with the answer, Gu Wenyu pinched He Xi's arm hard, "The demonic energy has become heavier!"

He Xi: "?"

Gu Wenyu looked out the window nervously. Outside the window was a thick layer of clouds, with only a little light source on both sides of the plane, and he couldn't see anything clearly.

"He Xi... Normally, shouldn't the plane fly above the clouds? Will we stay in the clouds for too long?" Gu Wenyu asked uneasy.

From the beginning, there have been thick clouds outside the window, like gray mist, and the real world is completely impossible to see through, and the moonlight cannot shine in.

"It's not right..." He Xi also felt that something was getting worse and worse.

"The demonic energy... is heavier!" Gu Wenyu became more and more uneasy. She knew that the demonic energy did not come from the inside of the cabin, it must be outside, and some change occurred outside.

Suddenly, the plane began to bump violently.

The sound of a flight attendant came from the radio, saying that the plane caused bumps due to the airflow. Please sit in the seat and fasten your seat belt.

But Gu Wenyu didn't believe this. She knew that it was definitely not as simple as airflow.

Before Gu Wenyu could figure out the reason, the plane suddenly passed through the clouds and resumed a stable flight.

But the window became even darker, and it was the kind of dead darkness that brought people a huge sense of oppression.

What made Gu Wenyu even more frightened was that the demonic energy became unprecedentedly rich. It was not the demonic energy that a powerful demon could emit. It was as terrifying as if he had fallen into a demon's cave.

At the same time, there were noisy sounds coming from the area behind the plane. Gu Wenyu heard many people shouting, and it seemed that many people were in a coma.

An old couple sitting next to He Xi also had a problem. The old man was in a coma. The old woman couldn't wake up her husband and was panicking to ask the flight attendant for help.

In the flight attendant, one of the flight attendants had fainted. After confirming that their companions were breathing normally, one went to help the old lady, and the other went to the back to calm the passengers' emotions. The captain's voice sounded on the radio, and the scene was very chaotic for a moment.

The white-faced fox's voice sounded in Gu Wenyu's mind at the same time: "Oh no! It's the Demon Realm! This is the Demon Realm! Your little master is right. The mark was planted on the plane, and it was the mark leading to the Demon Realm!"

Although Gu Wenyu didn't know exactly where the Demon Realm was, it felt unlucky just by listening to the name. She told He Xi immediately: "This is the Demon Realm!"

"What?" He Xi was startled, his face turned pale, "How do you know?"

"It was Xiaobai who told me." Gu Wenyu did not lie about this matter, but chose to tell the truth.

"..." He Xi did not reply immediately, obviously he was still biased when he was talking to the white-faced fox.

"Xiaobai can definitely believe it!" Gu Wenyu stared at He Xi's eyes and said seriously and firmly: "Believe me!"

"...Demon Realm." He Xi was a little confused, but he shook his head and forced himself to calm down. He said to Gu Wenyu: "We have to isolate the unconscious and the awake ones!"

As he spoke, He Xi had already stood up. Gu Wenyu was about to ask him why, the economy class had become even more chaotic.

The old man sitting next to He Xi suddenly woke up. The old man's throat made an inhuman roar, and he rushed towards the old man sitting beside him, and bit the old man's neck...
Chapter completed!