The days before leaving passed quickly, and Zhou Changfeng completed a series of preparations for the engagement resolutely, and gave Xia Xiaoshi the two hairpins of wood and silver that he bought last time.

At the same time, it also comes with a tungsten steel hairpin full of its own unique meaning.

One can imagine how confused and confused Xia Xiaoshi was when she saw the black-gray hairpin rich in metallic luster.

Xia Xiao: It's... What do you do?

Zhou: Tungsten steel, high hardness and corrosion resistance, is really a home travel artifact. If you encounter a bad guy, there is a pistol at a distance, and a hairpin at a distance, and a hairpin when you are close, it will definitely be a surprise.

Summer:......

Although there are some thunderous people, after all, they have moved their minds, so Xia Xiaoshi is still happy to accept it.

What's more, in terms of appearance, this metallic dark hairpin is quite beautiful and elegant.

After that, Zhou Changfeng officially visited the Xia family.

According to the advice of Yao Liangchuan and other military officers, the man takes the initiative to go to the woman's house to marry, which is the greatest respect for the woman, so many young men and women in the Ming Dynasty will choose to get engaged in the woman's home; Moreover, there is no need for outsiders to disturb at home, and the conversation between the two parties can be more intimate and private.

There are also many people who like pomp and circumstance, so there are many people who choose to hold an engagement banquet in a high-end restaurant.

It stands to reason that in this case, the man's elders have to come with him, but Zhou Changfeng obviously does not have this condition, so he finally came alone.

Xia Bing and Gao Linglu were very enthusiastic, while Zhou Changfeng was equally free and easy, without looking raw and restrained.

On the dining table, a mouthful of "Taishan" and "Taishui", everything has been talked about throughout the ages, and the marriage ceremony has become "the daily chat between the son-in-law and his parents-in-law".

During this period, the most embarrassing thing was Xia Xiaoshi, who was the person concerned - her father talked happily with Zhou Changfeng, her mother looked at her with a smile, and asked a few words from time to time, and she had to hold chopsticks and hang her head in her mouth.

This situation is very similar to the dinner party of relatives in later generations, where relatives are staggering and talking, while the younger generations can only eat and eat with their heads down and bored.

A thick red paper folded in half, written in black letters, signed by both parties, so that the marriage post is completed, and then it will be taken to the household hall of Jiangning County to register and keep the file.

Different from the original plane where Zhou Changfeng is located, the marriage regulations of the Ming Dynasty are relatively special, and the law does not allow direct marriage. It doesn't matter if it's simple or not, but you have to go through the engagement process before you get married.

In this way, the personal affairs before departure are settled.

But Zhou Changfeng knows very well that it may take at least half a year to go to Spain, so how can he maximize the use of such a long time?

After thinking about it, he decided to put forward some effective and far-reaching suggestions and ideas to the Ming military industry before leaving.

The foundation is thin, so it is naturally better to start accumulating and experimenting earlier.

In the two days of the seventh and eighth days of the new year, he was thinking ahead and back, listing various ideas.

From God's point of view, many of today's weapons have something worth optimizing and clarifying, but today's people can be described as "authorities fandom" and can only grope their way forward in unknown areas.

There are no stones to touch in the river, and Zhou Changfeng thinks he should be a guide.

However, it is a pity that many times even a general cannot influence the development trend of the military-industrial system and tactical thinking, let alone a lieutenant colonel.

This is also one of the reasons why he is determined to follow Zhu Lingjing, in order to maximize the right to speak.

Otherwise, if the Ming Dynasty wants to install a type of chicken rib weapon in the future, but he doesn't even have the right to stop it, how aggrieved it would be.

On the ninth day of the third month, it is the early morning of the day before departure.

This was the day off for the government-run organization, so Zhou Changfeng chose to visit Wang Huan'an's home directly.

Outside the treasure gate, in an ordinary small courtyard, people like Wang Huanan who do practical things are not very particular about work, and they are even more casual at home.

Dressed in a white robe and wearing slippers, he enthusiastically introduced Zhou Changfeng into the main room and beckoned his wife to prepare tea.

Looking at the reclining chairs in the front yard and the newspaper on the small round table, Zhou Changfeng blindly guessed that he must have been lying down reading the newspaper just now.

"Why are you here today?" Wang Huanan stretched out his hand and pointed to the chair, "Chief Zhou, you are not like a person who has nothing to do to come to the door." ”

"Yes, I have nothing to do but ascend the Three Treasures Palace." Zhou Changfeng picked up the teacup and took a sip, "Don't call me sir, it's boring, you can call your name and table." ”

"Okay, good," Wang Huanan smiled: "Then I guess, Kexing you come back... Is it a good idea again? ”

Zhou Changfeng next to him said unequivocally and directly to the point: "Yes, didn't I join the military expedition?" I'm afraid it won't take more than half a year to come back to Spain. So I thought I'd give you all the ideas I've had recently before I leave, and see if I can come to fruition. ”

Wang Huan'an nodded, and said with a straight face: "Just say it, I'll listen to it." ”

"I occasionally tinker with some experiments at the training ground, and the other day, I found out that if you spread and compact the explosives evenly, you can make a dynamite tablet."

"Then the explosive piece is detonated upright, and the shock wave is basically spread along the plane perpendicular to the explosive piece (horizontally)."

"Then I thought, if you put a steel plate on one side of the explosive piece to stop the shockwave from going this way, will it be possible to make the shockwave spread only to the other side?"

"The truth is that as I thought, the shock wave has basically only spread to the other side. On this basis, if the explosive chips are mixed with prefabricated fragments or steel balls, it ......"

"Then the fragments will be restrained and shot in a single direction!" Before he finished his words, Wang Huan'an, who was bright-eyed, blurted out.

This is actually known as the Sharding effect, which reflects the explosive properties of explosives in the shape of plates.

Unlike common spherical explosives, plate explosives do not release energy in all directions after exploding, but only in the front and back directions perpendicular to the normal.

Thus, if a restriction is given on one side of the plate explosive and the tissue transmits energy to that side, the vast majority of the shock wave can only spread out in the other direction.

"I think this thing has a lot of potential, Lao Wang, think about it, when our army is defending the position, arrange this thing in front of the position, and wait for the enemy to detonate it when the enemy approaches......"

Zhou Changfeng said solemnly, and at the same time gestured.

"Countless prefabricated fragments rushed towards the enemy troops attacking in front of them at high speed, but they did not hurt our troops behind...... What do you think? Isn't it excellent? Anyway, I personally think it works. ”

Wang Huan'an, who was immersed in reverie, waved his hand directly when he heard this, and said happily: "Needless to say, you have rich experience in the battle formation, and what you say is effective must not be invalid!" ”

He breathed a sigh of relief and said slowly: "I will organize people to re-test it at that time, if it works, I will definitely be able to enter the eyes of the Ordnance Bureau." ”

Recently, there have been a lot of trivial matters, and the old books have not been finished, so I should be able to update them after a while.

(End of chapter)