When Coetzee heard what Chen Weiyi said, he asked puzzledly: "The bird is afraid of the screams of his companions, and the old man has heard of this for the first time, but what is this 'sound wave'?"

Chen Wei glanced at Mu, Mu nodded, Chen Wei said: "Sound waves are the sounds generated by objects that can be transmitted far away, such as the sound of war drums, which can be transmitted far, far away, and the sound waves that birds are most afraid of are shock waves, infrasonic waves and cluster strong sounds, or the tragic cries of companions." ”

Mu saw that Kuche could hear the clouds and mountains and mist, and explained: "If the people of the Heavenly Sect are sensitive to sound, we will harass Fox Tianfeng with their voices and force him out of the bones. Let's make a loudspeaker, and then make some percussion equipment that can make a loud sound, and send the loud sound to the bones. ”

Kuchee suddenly realized: "That's right, the people of Tianzong are very sensitive to voices, and as this young general Chen just said, they seem to be very afraid of the screams of their companions, and the injured soldiers of Tianzong never treat them, and they were directly cut down and killed by their companions." ”

The pastor said: "Can they be so cruel to their comrades-in-arms that they don't heal?"

Coetzee said: "City Lord, don't you know, this long-distance battle, serious injuries and illnesses are a drag, not only affecting the speed of the march, but also consuming food and medicine. However, our army of the Human Sect did not use such drastic methods as the Heavenly Sect for injuries, which would break the hearts of the soldiers. If the battle is won, when the large army advances, we will leave the wounded soldiers who have no combat effectiveness in place to recuperate, and then bring them back when they return triumphantly, if they are defeated, there is no choice but to wait for the enemy to deal with it. It is very likely that the reason why Tianzong directly slashed and killed the wounded soldiers of his own troops on the battlefield was really afraid of the screams of his companions, they have always acted like this, why didn't I think of it before. ”

When everyone heard this, their hearts trembled. This is the cruelty of war, whether it is the extreme practice of the Heavenly Sect or the practice of the Human Sect, the weak and the wounded are always the sacrifices of war, and the strong are walking on their flesh and blood, with the flesh and blood of the enemy and the bodies of their comrades.

Mu said: "General, there is copper and iron in the barracks. ”

Coetzee said: "This copper is a rare item, and it is not available in the barracks, but there is still a lot of iron, and I have a special manufacturing department in this grain and grass camp, which is responsible for making weapons." ”

Pastor: "Can the general take us to have a look?" ”

Coetzee said, "We'll go now." ”

On the way to the grain and grass camp, Coetzee still asked suspiciously, "Is this method feasible? Can a loudspeaker force the fox to come out?"

Mu was not sure whether Chen Wei's method was feasible, but he believed in Chen Wei, Chen Wei had always been knowledgeable and talented, but he rarely spoke out, and when he suddenly spoke just now, he was naturally confident, so Mu Shu replied categorically: "General, don't worry, if you can really make this big horn, you just wait to use the sky net to catch those bird thieves of the Heavenly Sect." ”

Coetzee laughed and hurried up, eager to get the manufacturing department to build the loudspeaker right away.

The grain and grass camp is behind the Kuche middle camp, although the manufacturing department is subordinate to the grain and grass camp, but it is not next to each other, the manufacturing department is on fire every day, afraid of burning the grain and grass, so it is independently placed far away from the grain and grass camp, in case of emergency, there are also earthen walls piled up around.

In the distance, the clanging sound of metal clash came from within the earthen walls of the manufacturing department, and when Coetzee arrived with the big guys, a group of soldiers were carrying weapons, and a general and a big man in the manufacturing department were arguing about something at the door.

The strong man in the manufacturing department, with a bare rod, dark skin, round eyes, a horizontal face, and a beard full of cheeks, looks like a black rakshasa. Although the general on the opposite side was wearing a battle robe, he should be a civilian general at first glance, he was thin and hardworking, and the bearded strong man could put him down, and his momentum was a big loss in comparison.

The bearded man stuffed the drawings into the hands of the thin general, pushed him down, and said, "You made a mistake in drawing this broken drawing, no wonder we are leaving, Lao Tzu has no time to talk to you here." ”

The thin general stood up and stepped forward and said: "You reckless man is so unreasonable, you have done something wrong, you still beat people, do you dare to go to the Chinese army with me, let the general evaluate the reason." ”

The bearded man stepped forward and said with a smile: "Boy, if you don't roll again, see if I don't throw you in the stove to roast." ”

The thin man said: "Reckless man, you wait, I'll find someone to clean you up." ”

He turned around and walked a few steps, and met Coetzee and the others, the thin general was overjoyed, but was stopped by the soldiers leading the way in front, and he hurriedly shouted loudly: "General, the small left front battalion has something to report." ”

Everyone almost laughed when they heard the name, and then looked at this person, thin and withered, and looked like a cricket.

Coetzee said, "What do you have to report?" Coetzee waved his hand and asked the soldier to let him come closer.

He said bluntly: "The bearded man of the manufacturing department doesn't admit that he has done something wrong, and he beats people." ”

Coetzee said: "What kind of equipment are you going to do in the left front battalion, haven't you already made a batch of bows and crossbows before?"

Xi handed over the drawings in his hand and said: "This is a mechanism of small design, which can make Skynet bounce up in an instant, but the beard did it wrong, didn't rework, and beat people." ”

Coetzee glanced at the drawings and said, "Tell me how you can use this mechanism in Skynet." ”

Xi Yu came to Kuche's side, and pointed to the drawings with his eyebrows fluttering: "General, look, no matter how thin the line is, the Skynet is easy to be discovered by the soldiers of Tianzong when it is supported like this, and as soon as he finds him, he turns his head and runs away." I did this mechanism is to spread the Skynet on the ground at intervals on every two sides, and wait for the Tianzong soldiers to fly over the position of the Skynet in front, we first trigger the device of the Skynet in the back, and the Skynet will be set up instantly, and the soldiers of Tianzong will be too late to turn their heads again, that is, the rest will have to turn around and run in a hurry, so that the device of a net will also be triggered, sandwiching them in the middle, and when they fall, the strong bows and crossbows will be fired in unison, ensuring that none of them can run away. ”

Coetzee listened and said, "Wonderful, wonderful." Just do it the way you do. ”

When Dadato and Mu heard this, they also thought that the idea of this device was good, and they were in awe of this thin man.

He said bluntly: "But the bearded man of the manufacturing department is unreasonable, so he won't do it." ”

Coetzee smiled and said, "Are you afraid that there is anything you can't do with me, come with me." ”

Overjoyed, he straightened his chest and followed Coetzee back to the manufacturing department.

Dozens of large stoves in the manufacturing department were burning red, and those who were striking iron and pulling bellows, and others saw that Coetzee was coming, and hurriedly put down their work and gave Coetzee a salute.

Coetzee said, "No need to be polite, you are busy with your own business." ”

A scrawny old man walked over and bowed his hand, "Why did the general have time to come to my manufacturing department today?" ”

Kuche said: "Ge Lao, it's been good lately, I have invited a few friends to come over to help, and I want to build an artifact to deal with the group of bird thieves in Tianzong." ”

Dadato had heard the name Ge Lao, but he had never seen it, he was a very famous caster in the human sect world, and he didn't expect that he would also go on an expedition here with the army.

Ge Lao said: "My old bones are quite tough, thank you for the general's care, what kind of utensils does the general want to build, can there be drawings?"

Coetzee glanced at Mu, who stepped forward and said, "Old man, we'll send the drawings later." ”

Coetzee said, "You can see if you can do this." As he spoke, he gave the drawings to Ge Lao.

Ge Lao said: "This has been done." ”

He hurriedly said: "I didn't do a good job, I didn't rework, and I beat people." ”

Ge Lao shouted: "Tie Niu, you roll over for me." ”

The bearded iron bull hid in the corner behind, he didn't expect to tell Kuche about it, and he didn't expect Kuche to arrive at once, and he told the master in person, thinking that this was a big disaster, and he wanted to take the opportunity to slip away first, but when he heard the master calling himself, he had no choice but to come over hard.

The Iron Bull turned into a child who had made a mistake, and Nuo Nuo said: "Master, the Iron Bull is here, what do you call me?"

Ge Lao pointed to the drawings and said angrily: "What is not a tool, did you set it backwards when you turned the sand and fixed the mold?" ”

Tie Niu said: "His drawings were wrong, I can't complain about me, his drawings are reversed." ”

Ge Lao pointed at him and said, "It's still hard-mouthed, you wait for me to clean you up." The general is here, and he has not hurried to admit his mistake. ”

Iron Bull glared angrily, glanced at Coetzee again, and was speechless.

Coetzee looked at it and smiled: "Ge Lao, it's okay, let him make meritorious service for his crimes, and quickly complete this device, and he will be exempted from military law." ”

Coetzee saw that this was Ge Lao's apprentice, don't look at Ge Lao's scolding, which reflects the love for this apprentice. Coetzee sold Ge Lao a face, after all, Ge Lao and his apprentice were people invited by himself, not soldiers, and direct military law was a bit far-fetched, and he didn't make any big mistakes.

Ge Lao said: "This child is upright by nature and a little naïve, please forgive the general." ”

He gave the drawings to Tie Niu again, and said, "If you don't hurry up to work, if you make a mistake, you will be punished for not eating for three days." ”