When the rising sun shone into the bedroom in the early morning, Xiao Baozi seemed to hear someone talking in the distance.

Rubbing the sticky eyes together, and touching them with his side, he found that the man sleeping beside him was nowhere to be found. He slightly supported his delicate body and looked at him. He saw that the poplar wood on the other side was still sleeping soundly. Xiao Baozi put his hands and feet lightly, turned over and got out of bed without any disturbance, picked up his underwear and "armed" himself first.

In terms of living habits, Xiao Baozi is obviously incomparable to Yang Mu. She dares to rush around in the room if she only wears a silk pajamas, but she definitely dares not do it. At least she has to wear her underwear neatly first. Of course, this is the result of Zhao Yongqi's "teaching" over the past two years, otherwise if she doesn't wear it neatly, the little woman will definitely not dare to see anyone.

It can be judged from the occasional sound from the living room that the person who spoke must be his own man and Wen Chenglong. Put on his last shirt, Xiao Baozi gently opened the bedroom door and closed it gently. Then he smiled and said to Zhao Yongqi, who was looking at something on the sofa: "Honey, you'll talk to Brother Long so early, I'll make coffee for you."

If it were usual, Zhao Yongqi had already rushed over to do these chores first, but today he didn't even raise his head. He just said no, and continued to study the printed materials in his hand.

Knowing that her husband must have something important, Xiao Baozi didn't mind and slowly started to brew fragrant coffee for his lover.

"It seems that the group of guys in the bureau are not just a waste of money." After reading the information roughly, Zhao Yongqi bounced the paper in his hand and said: "This aerodynamic rocket propulsion expert, Academician Huang Tao, if I remember correctly, he should be responsible for the research on the 'new type of weapon delivery'. In short..."

"Brother Xiao Qi, this is top secret information, you can't say it." Wen Chenglong spoke up in an instant to stop him.

"Hey, you and Xiao Baozi are the only ones here, so what can't be said? Besides, it's just a hypersonic aircraft used to arm nuclear bombs." Zhao Yongqi finished speaking casually without mind, which made Wen Chenglong feel helpless.

"Husband, what is a hypersonic aircraft?" The little bun who came over with coffee asked with interest.

"Oh, it's not a very magical thing. Normally, the speed of sound is about 340 meters per second, also called Mach. One Mach is the speed of 340 meters per second, and two Mach is 680 meters per second, and so on. Because there is air in the world we live in, and having air means resistance, so the speed in the air is limited. The larger the mass of an object, the larger the volume, the more resistance it will be. Therefore, it is normal for small and slender things like air defense missiles to reach five or six times the speed of sound. However, things like rockets are different. Because of their huge size, the speed is greatly limited.

In our world today, the most deterrent weapon should be nuclear weapons. Therefore, for superpowers, who has more advanced intercontinental missiles means who stands in a safer place. The launch method of intercontinental missiles is very strange. First, use a rocket to push the warhead into space 500 to 1,000 kilometers away from the earth. Then, the warhead enters and flies around the earth. With the help of the lack of air and almost no resistance in space, the speed is pushed to the first cosmic speed, which is 7.9 kilometers per second. This speed is actually twenty times the speed of sound. When the warhead enters the atmosphere, with the help of the thrust and the gravity of the earth itself, the speed can even exceed twenty-five times the speed of sound when landing.

However, this kind of launch method undoubtedly increases the distance that needs to be moved. To put it simply, launching and launching takes one thousand kilometers, and falling takes another thousand kilometers, and it is easy to be intercepted when moving in the middle of space. Therefore, with the development of modern technology, people have begun to consider whether intercontinental missiles can move in the atmosphere throughout the entire range. This is related to speed.

A simple calculation can be made, flying at an average speed of 5 kilometers per second, that is, thirteen times the speed of sound. After the launch and fall stages, the entire journey takes 3,000 seconds, which is about 50 minutes. However, if the entire journey is in the atmosphere, the same speed will be reduced by 2,000 kilometers, which is 400 seconds. More importantly, because the earth is round, if it flies at a low altitude, the existing radar system will greatly reduce the warning time and will be more difficult to intercept.

Therefore, large aircraft that can reach Mach 5 or more in the atmosphere are generally called hypersonic vehicles. At present, the United States, Russia and us have conducted several tests of hypersonic vehicles, and it is said that the speed can exceed ten times the speed of sound. Although it may take time to reach the practical stage, this weapon system that is related to the future national destiny can be said to be the most important scientific research project."

"So that's so amazing." Xiao Baozi was stunned when he heard this, only knowing that he was lit with his head, while Wen Chenglong on the side rolled his eyes. It's not that Zhao Yongqi was wrong, but the agent obviously still couldn't accept such things that violated the principle of confidentiality.

After thinking about it, Xiao Baozi pointed to the information in Zhao Yongqi's hand and asked in confusion: "Well, my husband thinks it's this person, and he will be attacked by those bad people?"

"It's very likely." Zhao Yongqi nodded and said with a serious expression: "Of the twenty-seven academicians who arrived one after another since yesterday, only thirteen had relatives in the capital. Among them, only three of them did not work in state institutions. Among these three, this academician Huang Tao lost his son and daughter-in-law in an accident more than ten years ago, leaving only one granddaughter. The girl named Huang Juan just graduated from normal university last year and now works in an ordinary school. So, on the surface, this girl and Academician Huang Tao are the most likely targets."

"Not only that." Wen Chenglong nodded and said in his mouth: "From our investigation, Academician Huang Tao loves this granddaughter very much. Although he cannot raise him personally because of work, even so, he will take time to accompany this granddaughter who was sent to his friend's home every year. Therefore, if someone asks her to make a goal, it may indeed threaten Academician Huang Tao."

"Will you just have to ask my husband to strengthen her protection?" Xiao Baozi seemed to not understand. Even though there was already speculation, why did both Zhao Yongqi and Wen Chenglong still frowned?

"It's not that simple." Zhao Yongqi shook his head and threw down the information and said: "It is necessary to strengthen protection, but if the mastermind cannot be caught, something will happen sooner or later. The so-called "thieves are hard to guard against thieves for a thousand days, this is the reason."
Chapter completed!