Professor Hao’s expert group conducted experiments in the suburbs of Beijing, and General Li sent his secretary to pay attention to the progress one phone call a day.

Based on the hearing characteristics of birds, the expert team invited physics experts to design an integrated controller that combines intelligent solar charging and discharge control and variable frequency ultrasonic control.

I originally wanted to use infrasonic waves, but the directionality of infrasonic waves is too strong and the coverage is not large. It is better to use ultrasonic waves.

Ultrasonic pulses interfere with stimulating and destroying the nervous system and physiological system of birds, making them physically disordered to achieve the ultimate goal of driving away birds and killing birds.

The ultrasonic waves used by ultrasonic bird repellers have the characteristics of not penetrating obstacles, strong directionality, fast attenuation, etc., so a higher power bird repeller is used to propagate through countless reflections of ultrasonic waves, forming an ultrasonic protection net to cover the entire bird repelling space.

During the experiment, I found that after the birds caught were disturbed by ultrasound, the birds did not want to stay in their original place for a moment. They flew far away, both small birds and giant eagles.

Once the ultrasonic bird repeller was ready, Mr. Li sent someone to He Xiang to take him to the Golden Valley for experiment. This bird repeller was made like a radar and looked particularly exquisite and beautiful. The color of the entire bird repeller instrument was plated gold.

It is probably a protective color. I am afraid that it will be pecked by the eagle, so He Xiang installed the instrument and then opened it according to the instructions, aimed at the direction of the mountains, turn on the power supply and turn on the ultrasonic bird repeller!

This ultrasonic bird repeller is variable frequency. He Xiang rotates from twist to twist, from low to high. When the indicator needle turns to 80, He Xiang hears the eagle's cry coming from the sky. With the slight rotation of the ultrasonic waves, more and more eagle's voices screaming in the sky.

They hovered in the sky, but did not leave. It seemed that they had left the ultrasonic range. They felt a little better and wanted to fly back. When they flew back, they found it was very uncomfortable and flew out again! They found that He Xiang was below and didn't have the energy to catch He Xiang. It seemed that this external bird transfer was effective, so they should get a few more to be safer.

After He Xiang returned, he fed back his opinions to Mr. Li. After hearing the news, he was very happy and told He Xiang that the team of gold mining had been formed and set off in a week!

The mining of diamond mines here, after more than 200 vehicles of diamond rough stones were recovered, the state notified that diamond mining should be suspended. Now the most important thing for diamond companies is to work hard in development and design to enhance the brand and charm of moon diamonds!

If the supply in the market is too large, it will cause a fatal destruction of the value of the monthly diamond. Therefore, the country has more than 200 vehicles of diamond rough stones, which can be maintained for at least a few years of sales.

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"What, go to pick gold? Your mother and I will also go and see the origin of the gold! See, see!" He Guofu heard He Xiang say that he wanted to take national personnel to Tianyuan Continent to pick gold, so he came over to talk to He Xiang.

Zhang Aiguo rubbed his hands and laughed: "Old He, I have seen a lot of vegetables and oil, but I have never seen what the golden origin is like? Everyone goes out to see it?"

Lu Xiaolian, Zhao Pingru, Kong Yuelan and Huang Yingmei said while playing mahjong: "The four of us women must go. We are going to get some gold and make some hand jewelry, and make heirlooms for the children in the future."

No matter how hard these four women practiced, they could not get rid of secular concepts. They wanted to get some gold bracelets, gold necklaces, gold rings and other things to pass on to their children.

Kong Yuelan said while playing cards: "Last time, a few children went to the Golden Valley. Didn't they get some gold back? Momo made a golden horse and made a golden beautiful sheep. Haha, they showed it to me and I was so laughed to death!"

Zhao Pingru smiled and said, "Yuan is still like a child. Cao Ying seems to be a little sensible. She made gold bracelets and gold necklaces."

Lu Zihua sat next to Kong Yuelan and watched mahjong, took it and said, "It seems that the most vulgar one is Zhang Kun. He has made the most gold. Look at what he made: a golden rice bowl! Golden chopsticks, and a golden chair is weirdly made!"

"Teacher Lu, you say bad things about me behind my back. This is not a teacher!" Zhang Kun walked out and heard the teacher talking about his gold products, and said in an interview. "Teacher, you say that my vulgarity is nothing like Cao Hao's vulgarity? He is a big gold ingot that can't even move. It's too vulgar!"

Cao Hao threw an orange and smashed it over and said, "You are so talented, your beggar's job is ridiculous! You lose the face of us cultivators!"

Kong Yuelan asked, "Sister Ying, what are you going to make something with gold? Do you want to make some gold products for He Chuan?" Huang Yingmei smiled and said, "I don't want to give them anything. He Chuan donated the largest dog-headed gold last time to the military region. They are not short of money, so it's better to make a set of golden mahjong. We will not be able to play mahjong better!"

Zhang Kun gave a thumbs up next to him: "Auntie, you have a good idea, high, so high!" He Xiang walked over and patted him and said, "Hey, no, everyone is going to play in the Golden Valley. You drive over, and you drive this time."

The last time I went to the crater, it was Cao Hao. This time it was his turn. Just like last time, all fifteen people were dispatched, and the same car drove to the Dadao Valley military base. The engineers of the gold mining mine were prepared early. There were more people and machines this time. In order to prevent the eagle, dozens of ultrasonic bird repellers were prepared and prepared to be placed on the surrounding high ground.

He Xiang, Cao Hao, Zhang Kun and several engineers went in first, installed the ultrasonic bird repeller on several hills, and after adjusting the ultrasonic channel, the hissings of the carvings in other parts of the mountains seemed to be very sensitive. Soon, these big carvings could not withstand the interference of the ultrasonic bird repeller and flew far away.

The stone mountain range here is relatively large, hundreds of thousands of miles long, so you can't stay here, these carvings can fly to other valleys.

After these eagles left, He Xiang sent him in. There was a relatively flat place in the middle of the Golden Valley. As soon as these hundreds of engineers came in, they were stunned when they saw the golden valley with golden light. They had never seen a gold mine of such high purity, and it existed in this open-air form.

Although the nine old men, He Guofu and the others, had a much better attitude, they were excited to touch here and there.

In addition to a brief shock, the head of the engineering corps of the gold mining began to arrange the gold mining, and they drove all the cranes in.

He Xiang doesn’t have to worry about how the gold mining is arranged. He Xiang takes the second place and walks around to see where there is danger.

Suddenly, the second arch screamed at the top of the mountain. Is there a giant eagle on the top of the mountain? He Xiang said to Cao Hao and Zhang Kun: "Please pay attention. I'll go to the top of the mountain to see if there are a giant eagle hidden on it!"

As a master who is about to reach the Great Perfection of the Foundation Establishment Period, He Xiang took the second son to a cliff that was thousands of feet high on the top of the mountain with a very relaxed look. The second son fell into He Xiang's thigh, shouted at He Xiang twice, and then stared at the cliff!

He Xiang ordered: It is estimated that there is a giant eagle's nest on the cliff. He Xiang asked the second person to squat under the cliff, traveled to the earth by himself, and then scanned the cliff, and soon found a huge black hole in the middle of the county cliff.

He Xiang traveled through and there was a large bird's nest inside. The bird's nest was made of small thin trees, with two bird eggs the size of duck eggs inside.

It is probably the giant eagle egg. These two bird eggs have been hatched for a long time and are about to be born. The eggshell begins to have cracks.

He Xiang hurriedly picked up the bird's nest and brought two bird eggs back to Ziju Lake Villa, and then took the second one back. Just a few minutes after picking up the second one, two huge flower carvings came back with two big fish, and suddenly found that the bird eggs in the cave were gone. The two birds immediately neighed and immediately flew out of the bird hole, hovering in the air, but at the same time felt very uncomfortable. Affected by ultrasound, the two giant carvings had to fly far away from the top of the mountain.

He Xiang did not feel the pain of losing the child of the two giant eagles. He looked at the two giant eagles with enthusiasm. He Xiang patted the second one and said, "See these two bird eggs for me and don't be damaged by other things!"

After being hit by He Xiang's leg, he squatted beside him and quietly pricked up his ears.

He Xiang practiced at home for a few hours before traveling to the Golden Valley. At this time, the car was loaded with gold ores, and Zhang Kun and others were bothered by the surroundings.

"Monkey, would you come here earlier to pick us up? It's bare here, I'll be annoyed after ten minutes!" Zhang Kun shouted when he saw He Xiang crossing over.

He Xiang saw Zhang Kun empty-handed: "I won't pick up gold!"

"It's meaningless. I vomit when I see gold!" Zhang Kun waved his hand, then pointed to the nine old men and said, "Look at them, at the beginning, everyone held a bunch of gold, but now they are all lost! No one wants it!"

Lu Zihua came over and said with a smile: "I finally saw the world, and now I have truly reached the point where I regard money as dirt!"

He Xiang said, "Haha, Teacher Lu, your family has a lot of money. I think you have never worried about money!" Kong Yuelan took it from the side and said, "Why didn't you? When I was preparing to build a house, I borrowed money everywhere. At that time, I was jealous of money! Haha..."

He Xiang smiled and opened the soul black hole to let everyone go back to Ziju Lake Villa first, and then find Ye Hongjun who led the team. He rubbed his hands excitedly: "He Xiang, you brought me here a long time ago, and I won't worry about how the salary of the contact team is paid, which makes me look for people everywhere to raise funds. Now that the gold mine is installed, I will go back to the Dadao Valley military base immediately. I guess the upper part is waiting urgently!"

He Xiang asked, "How much gold is going to make for reserves this time?" Ye Hongjun opened his palm and signaled, and He Xiang said, "Five tons? Fifty tons?"

"Too few" Ye Hongjun smiled.

"Wow, it costs 500 tons?" Ye Hongjun shook his head again!

"It's not five thousand tons, right?" He Xiang said in surprise.

Ye Hongjun still shook his head: "There will be one ten thousand words behind the five thousand!"

With 50 million tons, He Xiang was blind. If so much, the price of gold in the world is not as good as iron.

Ye Hongjun patted He Xiang and said: "Now the country wants to link Chinese currency to gold. How can we ensure that others exchange without reserves more gold?"

He Xiang remembered that this was the plan of the national leader last time. Foreign countries refused to accept Chinese banknotes and threw them away as paper. They were later taken back by China and destroyed them, and reissued new Chinese coins. It was also stipulated that holding such banknotes can start to exchange gold for banks or gold reserve centers after October 1st.

Ye Hongjun hugged He Xiang and said, "I'll trouble you for a few days. We will increase our personnel to purchase it. It's estimated that it will take ten days. The purity of the gold mine here is too high. 50 million tons is one billionth of the reserves here."

He Xiang nodded: "No problem, as long as you need it, just contact me at any time!"

As hundreds of cars of gold mines were secretly transported into the gold smelting base, President Li called to thank He Xiang: "He Xiang, you have solved the biggest problem for the country! I am here to thank you first! If you have any problems or problems, you must first tell me, and we will do our best to satisfy you!"

He Xiang smiled: "Prime Minister, I deserve it for the country. My son has nothing to do at the moment. If you have something to take care of, just take care of my brother!"

"Haha, that's certain. Your brother has long been included in the key training of officers!" Hearing He Xiangyou's request, President Li smiled happily.

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"No. 1, don't bite me, monkey, help me!" Zhang Kun ran out of He Xiang's house desperately. He Xiang didn't have to think about it, "I deserve it, who told you to touch me!"

He Xiang waved his hand and asked the second person to return to the room, and said to Zhang Kun and Cao Hao who was running over: "I asked the second person to guard these two giant sculpture eggs. I picked them up from there!"

"No wonder, I just wanted to pick it up and take a look. The second-level guy bit my hand! I was so scared that I was getting more and more afraid of the second-level guy now. Monkey, how many crystals did you eat for it? I feel that it is almost becoming a monster!" Zhang Kun thought about the big mouth of the second-level guy, and his deep green eyes were afraid!

He Xiang smiled and said, "Not many, one level of transparent crystal every day!"

Cao Hao looked at the giant dome and said, "Monkey, would you please take us to find another carved egg? Now I handed my Tanhua to the army as a police dog, and I feel that I am empty around me!"

"You think it's easy. If it weren't for the second place, I could find it? Forget it, you'd better find another dog to raise it! Just have me with the carvings!" He Xiang laughed.

Zhang Kun turned his eyes beside him and ran outside to bring the three girls over. Zhang Momo immediately shouted: "He Xiang, Brother He Xiang!"

He Xiang had goose bumps when he heard it and said, "Don't call me brother, you should call me He Xiang to listen more comfortably!"

Cao Ying said softly: "Brother He Xiang, can you help us find a giant sculpture egg? We also want to raise giant sculptures, and we can ride on the magic sculptures like Yang Guo in the future!"

Lu Yingying didn't ask obediently, but at the same time he also looked at He Xiang with anticipation. He Xiang sighed and said, "Okay, you don't have to look at me anymore. Go back to practice. After I hatch these two carved eggs, I will help you find them!"

Zhang Momo immediately raised his scissors' hands: "Yeah! Brother He Xiang!!!!" Cao Ying and Lu Ying laughed and looked at He Xiang trembled.

Zhang Kun and Cao Hao hugged He Xiang: "Our flying dream depends on you, monkey!"

He Xiang looked at the two people who were walking away with contempt and said, "You should go and lose weight first. You are too fat, and the giant eagle can't afford to carry you!"
Chapter completed!