The strongest evolution system in the last days

Chapter 296 Ultrasound

The frequency of sound waves that can be heard by the human ear is 20-20000 Hz. When the vibration frequency of the sound wave is greater than 20000 Hz, the human ear cannot hear it.Ultrasound is named for its lower frequency limit approximately equal to the upper limit of human hearing.Therefore, we call sound waves with a frequency higher than 20000 Hz "ultrasonic".

At the same time, ultrasonic is a kind of mechanical wave, and mechanical vibration and fluctuation are the physical basis of ultrasonic flaw detection.

However, the wavelength of ultrasonic waves is relatively shorter than that of sound waves, and the usual obstacles are much larger than the wavelength of ultrasonic waves, so the diffraction ability of ultrasonic waves is not very strong. The direction is consistent and the wave is transmitted along a straight line. The shorter the wavelength of the ultrasonic wave is, the better the direct radiation ability will be.

The ultrasonic waves emitted by ants can also be called biological waves, and the straight-line distance that can be perceived is about 50 to 100 meters.

Perhaps, the perception distance of ant generals, ant kings, and ant queens is larger, but not too large.

Bai Jie wanted to enter the ant nest in front of him, but he could actually please him.That is to fly over with the help of blackened wings, and forcefully kill the queen ant before the ant clan reacts, causing the entire ant clan to perish.

After expressing his thoughts, Bai Jie began to keep looking at the ant nest in front of him.He needs to know whether there are flying ants in the current ant nest, so as not to expose his body during the flight.

Just when Bai Jie was thinking about how to deal with the third line of defense of Jingcheng forces, there was almost no zombie in sight in the main urban area of ​​Jingcheng.All zombies have now not only become the source of power for the demon clan, but their skeletons have also become the evolutionary energy of the current demon clan.

Low-level monsters are similar to wild beasts, they only have instincts.However, the high-level demon race is an intelligent species that can become the same as humans, and its behavior is not beneficial to humans.

"My lord, I have checked the entire Jingcheng inside and out according to your instructions, to make sure that there is no human race or even blackened human race in the entire Jingcheng. Even the vagabonds, we will force them to left."

"Okay, well done. Then next, the Speed ​​Breeding Guards, let my monster army go straight in and annex the surrounding forces of Jingcheng one by one. Then the first city closest to us, is there any big move recently? Among the surrounding forces, we The other forces don’t care, only the forces in the first city. The human army gathered there seems to be more than 20, right?”

"My lord, the forces of the first city have gathered troops from more than a dozen surrounding cities and a large number of people. That is a great resource! If we annex it, it will be enough to expand our clan by more than ten times."

"I know, but the First City not only has a large number of people, but also has guardian beasts. It is difficult for us to deal with them. If we attack forcefully, the nine-day phoenix dance of their beasts alone is enough to destroy us. I really don't know how they have it. With the blessing of the immortal fire phoenix. Shouldn’t there still be such a powerful ethnic group on earth today?”

The Demon King of Jingcheng is a short guy, and the sharp-mouthed monkey cheeks have not yet fully evolved.On its arm, there is also a long rat tail swinging back and forth, and two small eyes blink and blink.

During the process of thinking, he was still holding a large piece of meat in his hand, judging from its shape, it was the lump of soft meat on a woman's chest.

"Confession, the tribe will act according to the original plan. In addition, I will ask the ant queen of the ant tribe for me, and ask them when the ant tribe will grow up, and don't make me wait too long. I have supported them with the entire city's resources. Nearly [-] percent. If you can't achieve the expected goal, don't let the monster turn its face and deny people."

"My lord, the brothers are not convinced that we are so flattering the ant tribe! If we use this part of the resources on our own, our ability will be multiplied dozens of times!"

Reporting that Xiao Yao's status is obviously not low, otherwise he would not have dared to ask such a question.

"Hmph, what do they know? This ant queen is my mistress, and I have already signed a master-servant contract with her. If there is nothing beneficial, do you think I will do it? What we lack now is not the subordinates of the tribe. , but the lack of obedient soldiers. Go, see who still has a temper, find a chance, and you can figure it out!"

"Okay, Your Majesty. Next, let's start gathering the army to attack the surrounding cities? Do you want to release your escort team as well?"

"Let them out, don't keep any of them. Make sure to let them grow in the shortest possible time. I'll be of great use! As for you, you can't go out yet. I will hand over this area to you sooner or later, the demon king. Don't let anyone know about it. broke our relationship."

"Yes, then, my lord, do you want to pamper the little one now?"

Human relationship, demon relationship.It can be said that in today's intelligent population, there is no relationship at all.

Bai Jie didn't know what was going on with the forces in Jingcheng. He had already made a detailed plan to force his way into the queen ant's nest.Otherwise, he really couldn't destroy the ant army in front of him.

The flight started, and it took Bai Jie less than 30 seconds to reach the dirt slope area where he will be.But before the man landed, the ant general and ant king below had already discovered him first. Immediately, the tentacles were discarded one by one, and the open hole in the soil slope showed signs of closing.

How could Bai Jie let the slope below be completely closed?The moment it landed precisely, the ever-changing golden cudgel in his hand did not seek to kill the enemy, but swept across a circle in a 360-degree fast movement, pushing all the ant generals and ant kings aside, and directly smashed Huanglong's face at the soil in front of him. The slope is a violent blow, and the earth slope in front of the shock is a flying shot of mud.

"Stupid, you knocked down the nest, how do you attack the internal ant queen?"

The system greatly despised Bai Jie's behavior, and immediately exchanged it for a fast excavator for Bai Jie.

"Hey, can't you change to an automatic one? I can't drive your manual excavator?"

"Knowing that you can't drive, didn't you give you a general excavator driving guide?"

After the conversation between the system and Bai Jie was completed, Bai Jie had already opened the door of the excavator in front of him and sat in the driver's seat.

"Boom, boom..."

Bai Jie came up to face the breakthrough and started a round of crazy digging. As for the ant general and ant king who attacked the excavator, they were blocked by the iron wall of the excavator and were knocked "bang bang" by them.

"System, I realized that since you have become stupid, I have been as stupid as you. If I had known that they could not break through the protection of excavators, I would have let you exchange them for a Rampage to drive in."

The excavator dug frantically, and the ant queen hiding under the soil slope was dug out cleanly.It can be seen that the moment the queen was dug out, there was still an ant king stuck to her buttocks.Judging from its appearance, it seems that it is still in the process of creating a great life.Faced with such diligent activities of the Queen Ant and the King Ant, Bai Jie resolutely offered his most sincere blessings.

(End of this chapter)