From the end of the third year of Jian'an to the beginning of the fourth year of Jian'an, there were constant major events in the territory of the Han Dynasty, and they were basically related to Cao Cao.

Yangzhou Sun Ce defeated Danyang Zong's commander-in-chief Zulang, and surrendered Liu Yao's general Taishi Ci, completely holding Danyang County in his hands. Only Yuzhang was left in the entire Jiangdong;

Sun Ce listened to the advice of the captain Zhang Hong and sent envoys to Xudu to pay tribute and make friends with Cao Cao;

Cao Cao was in the center of the Four Wars in the Central Plains and had no time to go to the south to attack Yuan Shu. Thinking of the principle that the enemy of his enemy is his friend, Cao Cao appointed Sun Ce as the general to fight against rebellion and granted him the title of Marquis of Wu;

In order to contain Yuan Shu and appease Sun Ce, Cao Cao not only promoted Sun Ce to an official position, but also married his younger brother Sun Kuang, Sun Ce's younger brother. He also made the decision to let Cao Zhang marry the daughter of Sun Ce's elder brother, Sun Ben.

Liu Biao of Jingzhou formed an alliance with Yuan Shao and supported Zhang Xiu against Cao Cao. Cao Cao failed to defeat Wancheng in three campaigns;

During the campaign against Wan, Huan Jie, a native of Linxiang, lobbied Zhang Xian, the governor of Changsha, to rebel against Liu Biao and marry Cao Cao;

When Zhang Xian heard that it was reasonable, he started an uprising in Changsha, and Lingling and Guiyang counties responded at the same time;

There was a rebellion in the rear of Jingzhou, and Liu Biao's support for Zhang Xiu weakened, which relieved Cao Cao's pressure in disguise.

Lu Bu was defeated and killed in Xuzhou, so Cao Cao appointed his confidant Che Zhou as the governor of Xuzhou, completely eliminating the threat from the southeast.

Gongsun Zan of Youzhou was defeated and burned himself in March of the fourth year of Jian'an. At this point, Yuan Shao unified Hebei and occupied the four states of Hebei, You, Bing, and Qing. His strength reached its peak, and at the same time he was planning to attack Cao Cao.

Among the princes, Cao Cao operated on multiple lines like an e-sports master, and Long Xiang, who was far away in Hefei, was not idle either.

He began to prepare soil cement at the beginning of the fourth year of Jian'an, and by May he had produced soil cement with satisfactory strength.

On the day the experiment was completed, Long Xiang was in the temporary shed, jumping up and down as happily as a child.

Since the main raw materials of soil cement and bricks are the same, we plan to set up the cement factory in the kiln area.

Long Xiang has been busy conducting experiments recently, and Lu Su is taking care of Hefei's military affairs. He himself is in the "laboratory" every day, adjusting the proportions and recording data while experimenting.

When Lu Su and Feng Zhong saw Long Xiang, they saw that he was covered in dust, with mud on his legs, face, and hands. He was dirtier than the brickmaker next to him.

Feng Zhong looked at Long Xiang and asked curiously: "You came to us in a hurry. What's the matter?"

"Yes, there have been a lot of refugees coming in recently. Most of the remaining houses in the city are seriously damaged and must be overhauled before they can be inhabited. General Feng and I are very busy..."

Lu Su's implication is that if you are doing your cement experiments, don't call us to accompany you.

Long Xiang grabbed a handful of gray powder, spread it in his hands and said excitedly to the two of them: "Uncle Zhong, Zijing, the cement I mentioned has been completed."

"Oh...congratulations..."

Feng Zhong answered very calmly. The craftsman camp under his administration is dedicated to construction and is no stranger to cement-like adhesive materials.

The yellow mud used when building the granary last year also worked well, so Feng Zhong didn't have high expectations for cement.

Lu Su was not interested in construction. When he saw Long Xiang was so excited, he curiously asked: "What next?"

"Of course we will build a workshop immediately for mass production, and it will soon be used for urban defense and urban construction."

Long Xiang squeezed the soil and cement in his hand, his face filled with pride that was difficult for outsiders to understand.

The formula of soil and cement is very simple, but it has to be close to the label of later generations. Without the assistance of any scientific instruments, it can only be tried slowly through stupid methods. Except for those who are really interested in civil engineering, few people are willing to 'play with mud' every day.'

Eat ashes'.

After hearing this, Lu Su quickly dissuaded him: "Hefei now has a lot of workshops. I suggest that the cement workshops slow down. It is easy to bite off more than you can chew..."

Feng Zhong couldn't bear to dampen Long Xiang's enthusiasm, so he slapped Lu Su on the back and said, "It's no problem to build a cement workshop, but my people really can't arrange it recently. How about waiting until the end of the year when there is a slack season?"

Long Xiang was noncommittal and quickly changed the subject and asked: "The habitable buildings in Hefei are too scattered, and repairing them is a waste of time. How many houses are still lacking to accommodate the people now?"

"Hundreds of rooms..." Feng Zhong frowned.

Long Xiang waved his hand and said: "Then don't repair it, just build new houses. Anyway, a lot of bricks have been burned this year. It is estimated that there will be no problem in building more than a hundred units."

Feng Zhong's eyes widened and he asked: "Aren't those bricks meant to be saved for repairing the city wall? I heard that last year Cao Cao flooded Xiapi with water, causing serious damage to the Xiapi city wall. Seeing that the soldiers in the city could no longer defend it, they tied up Lu Bu and dedicated it to him.

Cao Cao..."

Lu Su nodded and added: "The rammed earth city wall has been soaked in water for a long time, and there is a high possibility of partial collapse. It is easy for the enemy to take advantage of the damage. It may be better to replace it with blue bricks."

Long Xiang said with a leisurely smile: "Nowadays, conventional brick and wood structures mostly use yellow mud as the binding material, but yellow mud is easily soluble in water, so of course it cannot stop water from soaking and flooding.

The cement I prepared is different. After it is completely solidified, it is as hard as stone and is not afraid of blisters. Therefore, even if you want to use bricks to strengthen city walls, you cannot do without a cement workshop."

Lu Su stretched out his hand in surprise and picked up a handful in Long Xiang's hand, thinking to himself, isn't this just dust?

"It's so magical..."

Long Xiang turned back to the experimental shed and found two cement wastes inside.

He handed it to Lu Su and said, "Zijing, try it yourself and see what the difference is between this cement block and stone?"

Lu Su took it with both hands and immediately felt some weight. He dropped it on the ground in front of him and immediately made a hole in the mud.

"It's really..."

"Hiss...it's so awesome. The cement workshop must be built, but what about building new houses..." Feng Zhong hesitated.

"If the city walls of Hefei were reinforced with bricks, it would cost tens of millions of bricks. This cannot be done in a day.

Furthermore, the small town of Hefei is in peace with the world, so who would come to Yancheng for nothing? Now there are not enough places for the people to live, and new buildings are urgently needed."

After Long Xiang finished speaking, he asked Lu Su: "What do Zijing think?"

Lu Su nodded and affirmed: "What Yun Qi said is true. Hefei is high and the water supply is low. It is very difficult to irrigate the city with water. Unless there is a heavy rain that causes the rivers to swell, but who knows? It is also possible to build new houses.

of..."

Seeing that Lu Su agreed, Long Xiang told Feng Zhong: "Since Zijing also agrees, the matter is settled. The cement workshop will be built next to the brick workshop. I will draw the blueprint of the cement workshop tonight. Uncle Zhong will adjust the five

Ten craftsmen are enough for the construction."

"I'll make arrangements later." Feng Zhong nodded solemnly.

"Zijing, the demand for cement is huge. After the workshop is built, it will not stop regardless of the cold or heat. In addition, the craftsmen in the workshop do not need to do other things. You first recruit more than a hundred young people for use, register them and provide them with official salary."

"OK."

After Long Xiang finished explaining Lu Su, he called Feng Zhong and told him: "Uncle Zhong, I asked you to clear that land last year so that we can start construction together. Now we can start digging the foundation according to the drawings. Now that we have cement, we can build drainage culverts."

, directly reach the target in one step.”

"well..."

As Long Xiang's loyal confidant, Feng Zhong is fully qualified to live in a big house in Hefei, but he has been waiting for Long Xiang's new house and was moved when he saw the sketch.

The dream is about to come true, and Feng Zhong's heart is like a wild horse running wildly.

There was little rain in the summer, so Long Xiang couldn't wait to train cement craftsmen during the construction of the cement workshop.
Chapter completed!