Chapter 1591

Chu Yun looked at the approaching crowd outside, "one is to avoid doubt, the other is to save ammunition, because we don't know what kind of things we will encounter next, so we must have enough ammunition."

Heita nodded and the ghost King began to fight. Of course, Chu Yun also wanted to join the battle, so he hurried to the second floor and prepared to attack from the second floor.

At this time, the ghost king suddenly ran up, "boss, we can clean them up with slingshots. You don't have to use a gun. Now the shooting is so big that it will arouse suspicion from the outside world. "

"Is the range far enough?"

"Don't worry, I put the anesthetic on the catapult and shot them directly. There must be no problem. But this time I changed the anesthetic into a poison needle. "

Chu Yun patted the ghost king on the shoulder. He knew what the ghost King meant. If he used anesthetics, he was afraid there would be future trouble. He could come quickly by directly using poisons without trouble.

So Chu Yun shot the poison directly at the man with a slingshot according to the ghost King's intention. Although Chu Yun's eyesight is good, he still misses.

Chu Yun's deviation attracted the attention of those people, and then all his attention focused on the second floor.

Bang, bang, bang.

After a few shots, Chu Yun and the ghost King hid behind the wall again, "it seems that this alone can't do, you have to use a gun."

Chu Yun is reluctant to give up bullets. After all, they are too short of bullets now. But now he can't solve those people without a gun.

Chu Yun hid behind the wall and couldn't see the outside. As soon as he appeared, he would be attacked. He simply ran downstairs and attacked against the window.

"There are so many people in this wave." Heita destroyed five or six people downstairs, but there were still people around.

At this time, Chu Yun came down, and the black tower finally didn't have to be attacked on both sides. He focused on the front, and Chu Yun focused on the back.

After a fierce fight, the whole room was in a mess, and the previously painted walls were full of holes. And the tables and chairs bought back are much broken.

Finally, another wave was eliminated. The ghost King found that the two cars on the roadside had disappeared and there was no one around.

"It's over." Heita is almost out of strength now. "Boss, how long haven't we fought like this? I'm a little soft."

During the battle just now, the former killer was suddenly awakened. He was bound by the black tower. The whole person couldn't move, so he had to worry on the ground.

Now that the battle is over, he's scared to pee“ I said, "why don't you let me go? I've said everything I should say. Why are you so dishonest?"

Black tower has soft feet now. Hearing the man's ghost cry like this again, I was a little impatient. "OK, if I had let you out earlier, you would have died. Where would I live to yell and scream here?"

"Do you think their evacuation is not normal?" Chu Yun said after tidying up his things.

"Yes? Why didn't I feel it? " Black tower looked at Chu Yun at this time and said with some doubts.

"Did you hear a bird just now?"

The ghost king was also coming down from upstairs at this time. He looked at Chu Yun and said in surprise, "boss, do you mean the sound of birds?"

Chu Yun nodded, "did you hear that just now?"

The ghost king also nodded hard. "I heard a few bird calls just now, but I didn't think there was anything wrong."

At this time, the black tower also slowed down. "It's not uncommon for birds to sing. After all, this place has been abandoned, no one lives here, and nature has not been destroyed these days. There must be some birds to build their nests."

"The fierce battle just now must have alerted the birds here, so it's normal for them to make bird calls."

Chu Yun shook his hand, "no, no, it's not normal. As you said just now, during the battle, the gunfire startled the birds in the forest, but they must have dispersed in a mass. "

"Think about it, will you still shout calmly after you are frightened? What we heard just now was a few bland bird calls, so I don't think it's a normal bird call. "

"It's not a normal bird call. Could that be an abnormal bird call? " This sentence came from the former killer.

Hearing the killer's words, heita raised his fist at him, "why do you talk so much nonsense? Believe it or not, I'll beat you again."

If the killer's hand was not tied, he might have covered his eyes directly. Seeing the appearance of black tower, he swallowed his saliva silently.

"He's right. It's an abnormal bird call. It's a low-frequency sound." Chu Yun came out and said“ This low-frequency sound can only be heard by special low-frequency headphones. "

The ghost king and black tower looked at each other again, "boss, do you mean that some of them use this low-frequency sound to whistle to let them leave?"

The ghost King's guess is close to the fact, and Chu Yun thinks it should be the result. If no one instructs, how can the car parked on the roadside disappear.

"That's the low-frequency sound. Can you imitate it? " Black tower suddenly enlightened at this time. He understood what Chu Yun said just now.

"It depends on the ghost king. If the ghost king can simulate it, maybe we can find a way and possibility to manipulate them." Chu Yun finished and looked at the ghost king.

"But the sound was not recorded just now. I don't think the ghost king knows what frequency and what sound can make them retreat? "

After listening to heita's words, the ghost king suddenly smiled and said proudly to them, "it doesn't matter. As long as it happens at the door, I have a way."

Now it's Chu Yun's turn to look at the ghost King suspiciously. What did the ghost king just say? Can he get the whistle out“ But there were gunshots and voices, and it was far away. You may not be able to get it out. "

"Boss, don't worry. Give it to me. I'll try." The ghost King thinks it's rare for everyone to need him at this time. He won't let everyone down.

Chu Yun certainly hopes that the ghost king can restore the sound. If he has mastered the sound, he may be able to manipulate these people to kill him. For the time being, he can slow down and escape.