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Zhang Gang was holding a basin-sized cyan stone in his arms, heavy, and he couldn't see any fame. However, after Gu Zhenhua saw it, he hurriedly took two steps and took it, and his enthusiasm was much stronger than that of whale oil.

Li Jibo and Xia Shouli also came over, staring at the stone carefully, Gu Zhenhua smiled and put the baby stone in front of the two.

"Guess what this thing is?"

"It looks like a stone, but it doesn't feel like it, it's more delicate than a stone, and the shape is more regular, it looks like lime, but the color is wrong, I really can't think of what it is." Li Jibo shook his head and said.

Gu Zhenhua smiled slightly, "Zhang Gang, bring the baby over and let the two gentlemen take a look." ”

As he spoke, Zhang Gang carried a bag from the carriage, and from the cracks, fine gray powder continued to spill out and fell on the clothes, but Zhang Gang didn't care, put the bag in front of Li Jibo, and then pulled it open, revealing the contents inside.

Li Jibo hurriedly looked at it, and it was all gray powder, as fine as flour, and the most important thing was that the color of these powders was exactly the same as that stone.

The old man's eyes suddenly lit up, and he said in surprise: "This, is this turning into stone with these powders?" ”

"Mr. Li has good eyesight." Gu Zhenhua said with a smile: "These powders are mixed with water, which can produce extremely viscous mud, which can be used to build walls, and it only takes three or four moments to completely solidify, the hardness is comparable to that of stone, and it is not afraid of water." ”

"Really?" Xia Shouli's eyes widened: "Grandpa Guo, according to what you say, these powders are actually good building materials?" ”

"Of course, if you don't believe it, you can smash this stone and see how hard it is."

"Okay!" Xia Shouli took a hammer. It slammed into it, but a hammer fell, shaking his wrist and causing the stone to drop a little powder. Xia Shouli was still unwilling, and smashed three hammers in a row. Finally dropped a piece the size of an egg.

Seeing this, the quartermaster almost jumped off the ground, and he clearly realized the amazing value of this thing!

"Grandpa Guo, this thing is so powerful, and it costs a lot, right?"

Gu Zhenhua glanced at Zhang Gang and said with a smile: "Master Zhang." Tell me how you came up with it. ”

"Hey!" Zhang Gang hurriedly agreed: "Speaking of which, it all depends on the guidance of Grandpa Guo, after I burn the charcoal, Grandpa Guo will build yì I calcined the limestone and clay in a ratio of three to one, and after firing, add gypsum to grind. It became this powder. ”

Zhang Gang smiled honestly: "It's easy to say, but it's hard to do, we burned it for more than 20 days before we got a qualified product." Water was added, and fine sand was added, and a wall was built that night, and the next day I got up and looked at it. The wall has been built, it is exceptionally strong, it can't be broken with a hammer, and it's not afraid of blisters, it's a god! The most critical point is that the materials are extremely ordinary, the current cost of a barrel is only ten yuan, if you burn more, the price can be reduced, and it can be controlled within three yuan. ”

"How much?" This time it was Li Jibo's turn to be surprised, "Is Sanwen enough?" ”

Or. Maybe it's a little cheaper. ”

"No more, no more!" Li Jibo laughed: "That's enough." ”

The old man smiled and said to Gu Zhenhua: "Grandpa Guo, do you know what you need to use as a binder to build a city in the past?" ”

"I heard that glutinous rice juice and egg whites are used."

"That's right, it's something that people can't necessarily afford. but they were to be put on the walls of the city and to be used for the mud. One mile of city wall, the specifications are different in various places, but at least it costs 20,000 taels of silver, and when it is more, it costs 40,000 taels, which is not counting the labor cost. At that time, Sun Chengzong advocated building a border wall of hundreds of miles outside the pass to block the Manchu Qing Dynasty from moving south, and the cost of repairing the city alone dragged down the finances of the Ming Dynasty. However, if you have this thing in advance, the cost of repairing the city can be reduced by at least 50%. ”

Gu Zhenhua had a smug expression on his face, this was the advantage of the traverser. Any Ming, especially the early Ming, is made by chance under unconscious conditions.

And Gu Zhenhua is familiar with the future trend, and after successfully calcining the coke, he thought of cement. The fortress is the most advantageous weapon against the iron cavalry, so Gu Zhenhua immediately told Zhang Gang about the steps and ideas of burning cement, and let them explore it immediately, but he didn't expect that there would be results so quickly, and Gu Zhenhua was also extremely happy.

"Mr. Li, you haven't counted the time yet, it will be completely solidified in three or four hours, and it will become as solid as a stone. In other words, overnight, a castle can be built. Even if they are in the city, the degree of repair is worth the degree of destruction. ”

"That's right, with this thing, the offensive and defensive readiness will be greatly changed!" Li Jibo said with a smile: "Since it is such a sacred object, I think it should be given a good name, what does Guogong think it should be called?" ”

"Cement." Gu Zhenhua said without hesitation.

Xia Shouli shook his head, "Grandpa Guo, these two words are a bit ordinary, I think it should be called a more majestic name." ”

"Hahaha, the common people pay attention to life and are easy to feed, and this thing is the same, we call it ordinary, and the Manchu Qing Dynasty will not have any doubts. The learning ability of these Tartars should not be underestimated, they have not even seen firearms in the past, but after Kong Youde and others surrendered, the Manchu red-clothed cannons became their weapons for attacking the city, and I should also guard against the Manchu stealing divisions. ”

"It's still Grandpa Guo's thoughtfulness." Xia Shouli said with a smile: "In this case, the production of lowly construction cement will simply be handed over to the Quartermaster Department, and we will strictly manage it to ensure that good things will not leak out." ”

"Okay, that's what I mean, the Quartermaster Department will immediately organize the production of cement, this is a sharp weapon for us to win the war, and we must not relax."

"Yes!"

Xia Shouli immediately took Zhang Gang down and arranged cement production.

Gu Zhenhua and Li Jibo returned to the palace again, and after walking down, there was a large amount of whale meat, which temporarily solved the nutritional problem of the soldiers, and with the sharp weapon of cement, they were sure to build a strong castle quickly. An **'s combat ability has improved a lot, and Gu Zhenhua has also become extremely confident.

In the middle of the study, in front of a huge map. Gu Zhenhua and Li Jibo stood opposite each other, both of them staring closely at the situation on the picture.

"Mr. Li, according to intelligence, the Manchu Qing Dynasty is adjusting the focus of the attack during this time. Take back the original two fists, prepare to attack the northwest mainly, solve the Dashun army first, and we won't be able to run away by the way! ”

When Li Jibo heard this, he smiled slightly, "The original arrangement of the Manchu Qing Dynasty was not very clever. One army to the west and the other to the south, the two sides will only go farther and farther away, unable to form a joint force, which is not a good thing for the Manchu Qing Dynasty, which is overstretched. If Grandpa Guo didn't get rid of Zu Kefa, the Manchus would realize the emptiness of the Central Plains. Maybe they will go down the wrong path, which may be more beneficial to Ann. Hiding behind, like a poisonous snake, gave the Manchus a fatal blow. ”

Gu Zhenhua smiled bitterly: "It's not that I haven't thought about it, but I really don't dare to overestimate the combat effectiveness of the four towns in Jiangbei." With their state, I am really afraid that the Manchu army will appear, and they will immediately fall into collapse. Our foundations are shaky. At this time, if Daming's signboard falls, An** will be over! ”

"Grandpa Guo's worries are reasonable, but in this way, we have to face the Qing army in advance, and the pressure is not small! Even if there is cement, I am afraid that if you want to block the Qing army, the sacrifice will not be small. ”

While he was talking, suddenly Wu Kaijie and Zuo Maodi rushed over and asked to see Gu Zhenhua.

As soon as he heard that the messenger was back, Gu Zhenhua hurriedly let them go to the study. Report the news directly. Zuo Maodi said the original story of the envoy.

After they arrived in Xi'an, they were beaten into the cold palace by the Dashun army at the beginning and hung for several days. As a result, the Dashun army lost the battle in Shanxi, so it had to cooperate with An **. Finally, when it comes to betting between the two sides, see who wins Huaiqing first.

Wu Kaijie smiled: "Grandpa Guo." Li Zicheng is a often defeated general, and he dares to argue with you, he is simply a birthday star who eats arsenic all the time, and he is tired and crooked. The humble position is waiting for the grandfather of the country to strategize and take down Huaiqing, leaving Li Zicheng speechless! ”

"I think you're talking nonsense." Gu Zhenhua's eyes widened, "Huaiqing is an important town in northern Henan, and the Manchu Qing Dynasty has hoarded heavy troops. We were able to easily kill Zukofa because of Zukefa's rash actions that we concentrated our efforts on solving them. And Jin Yuhe, the chief soldier guarding Huaiqing, was extremely cautious. Moreover, the Qing army kept sending reinforcements, and it was not easy to compete with him! ”

"Huh?" Wu Kaijie was also dumbfounded, "Then what should I do, I'll go to Li Zicheng again and say that the gambling game is canceled." ”

"Cancel you big-headed ghost!" Gu Zhenhua said angrily: "You're not afraid of being embarrassed, I'm still ashamed!" Since I have gambled, I have to gamble to the end, and it is with Huaiqing that I want to take a good look at the Taoism of each army. ”

After Gu Zhenhua finished speaking, he looked at Li Jibo and Xia Shouli, "Two gentlemen, the army has not moved the grain and grass first, and Mr. Xia immediately raised military supplies and prepared for a big battle. Mr. Li, you go and draw up a combat strategy, if you don't fight, you have to fight with majesty! ”

Gu Zhenhua went to the front of the map again, pointed to Huaiqing and said: "This place is the northern barrier of Luoyang, taking Huaiqing is equivalent to giving Luoyang an insurance, the pressure on the front line of Tongguan will also be greatly reduced, and the chance of winning against the Manchu Qing will increase a lot, this battle must be won, and it must not be defeated!" ”

After all the explanations were clear, everyone went to prepare, Gu Zhenhua also went straight to the backyard, seeing that there was another war, Gu Zhenhua had to say goodbye to the red lady.

The red lady has a special identity, coupled with extreme sensitivity, so Gu Zhenhua is afraid that he will make something unhappy, after all, family and everything is prosperous.

As soon as she left the back house, the maid said that the red lady was not there, and she was teaching martial arts in the martial arts field at this time!

"Who do you teach?" Gu Zhenhua asked in surprise.

"It's that Miss Zhang, she doesn't rely on the girl and let the girl teach her." The little girl couldn't help but say.

As soon as Gu Zhenhua heard this, he hurried to the cross-courtyard next to the back garden, where the land was flattened, and there were knives and guns on both sides, stone piers and stone locks, everything.

In the middle of the school field, one red and one white, two pretty figures were flashing quickly. The red lady punched, and Zhang Xianyun followed along to learn.

"Arms are higher, fists are looser, legs are back, and the center is steady." The red lady couldn't help but say: "With such a simple long fist, you have become like this, do you dare to say that you have learned martial arts?" ”

"Why don't you dare, from childhood to adulthood, there are many martial arts masters around me, all of them are masters of the rivers and lakes, and they also praise me for being smart and clever, as long as I see a set of boxing techniques, I can do it all."

"!" The red lady said unceremoniously: "Can't you have a snack, is martial arts just a routine?" You have to know what it is, and you have to know why. When you punch out, you have to think about how to hit others, how to dodge other people's attacks, what's the use of just knowing how to practice routines? I think you've been deceived by the embroidered legs, or don't practice! ”

"Master, I know it's not possible to make a mistake, so you can give good guidance to the apprentice."

"Hahaha, how did the assassin learn boxing techniques with his master, is it to prepare for the next assassination?" Gu Zhenhua walked over with a smile.

When Zhang Xianyun saw it, he immediately smiled and said to Gu Zhenhua: "Grandpa Guo, the little girl knows that your work is world-famous, teach the little girl two tricks!" ”

Gu Zhenhua smiled slightly: "Miss Zhang, it's not easy to learn art, have you heard a word?" ”

"What?"

"If you want to learn, sleep with the master first!"

"Indecent!" Although Zhang Xianyun was bold, she was openly ridiculed, her face was still flushed, the little girl bit her lip, and said angrily: "Dignified Ji Guogong, is it just bullying a weak woman like this?" ”

"Hahaha, Miss Zhang, you are willing to do everything, I just said the conditions for teaching martial arts, and I didn't force you to agree. Ben Jue still has business, if you have nothing else to do, go home first. ”

Gu Zhenhua directly ordered the eviction, and Zhang Xianyun left angrily.

The red lady looked at her back, pinched Gu Zhenhua's arm fiercely, gritted her teeth and said, "You haven't seen it yet, that girl has you in her heart, so she tried her best to run this way." As a result, you still teased her with words, didn't you have a good heart? ”

"What's the matter, I made her think that Gu Zhenhua is just like this, the little girl is interested for a while, and it will be fine after a while." Gu Zhenhua hurriedly said: "Lady, it's all about you in my heart!" ”

"It's going to deceive!"

"Lady, how can this be a lie, I will send troops to attack Huaiqing these days, and I have to bother you to keep an eye on the situation in Luoyang to prevent any accidents."

"What? And war again? ”

"Hey, there's no way, you wait in Luoyang, wait for my good news!"

……

The flag was unfurled, the people shouted and the horses neighed, and the large army of An ** crossed the Yellow River along Mengjin, and Gu Zhenhua personally commanded more than 7,000 soldiers, plus more than 30,000 people, to march towards Huaiqing.

"Grandpa Guo, the big thing is not good, the Dashun army has begun to attack Huaiqing!"