There is a bridge on the unitary water, but it is in disrepair, and the width is not enough, there is no problem for people and mules and horses to pass, and it is not possible to carry heavy carriages, so it must be rebuilt, but how easy is it to repair the bridge on the water?

After some thought, Qin Huaidao decided to have a sectional construction, that is, intercept half, let the water flow from the other side, and after the interception of this side has no water, it is good to construct, dig out the silt, fill the stone and tamp the foundation, and then pour cement mortar to erect a large pier, and then fix it into a groove with a board, lay steel bars inside, and pour mortar to pour and form.

Wait for the cement to dry and then intercept the other side, let the water pass from the repaired side, as concocted, connected into a whole is a cement bridge, this pouring method to build a bridge is strong enough, the weight is strong, the only trouble is the steel bar.

It seems that you can only ask Zhenfu County for help.

Qin Huaidao carefully pondered the problems existing in the sectional construction, thought of solutions, wrote them down one by one, and saw that it was not early, and turned his head underwater.

Early the next morning, Qin Huaidao got up and saw that Luo Zhang came over with someone escorting the silver, and was chatting with Cheng Chu about something, and hurriedly went over and asked, "Why are you here?" ”

"Don't worry, I'm afraid that something will happen on the road, don't worry about the safety over there, General Wei Chi will watch it for me, and I'll return here after the silver is handed over." Luo Zhang hurriedly explained.

Qin Huaidao was relieved when he heard that Wei Chi Gong was helping to sit in town, and he nodded and said, "Give the silver to Brother Cheng and go back, have you found any suspicious characters in the past few days?" ”

"This thing is very strange, it has disappeared in the past few days, and General Wei Chi has also sent people to search all over the mountain, and found traces of people's lives, and no one is seen."

"It means that the other party ran away, but since I have been here, this matter is not over, be careful when you go back." Qin Huaidao admonished, and continued to Cheng Chumo: "After the handover of the silver, prepare it, and when I eat something and go together, I will also go to Zhenfu County, and there will be a response on the way." ”

"It's over." Cheng Chumo hurriedly agreed.

Qin Huaidao nodded, asked the innkeeper for something to eat, left those interns, and hurried away with a few Yulinwei entourage, arrived in Zhenfu County more than an hour later, and walked separately from Cheng Chumo, and went straight to the county office.

The official didn't know Qin Huaidao, came up to stop him, and the entourage stepped forward to show his waist card, revealing his identity, the official didn't dare to be careless, and hurriedly went in to tell him, not long after, the county magistrate Sun Mei hurriedly ran out, and shouted when he met: "The lower official Sun Mei came to see Lord Qin, but he couldn't greet him from afar, and asked Lord Haihan." ”

"Go in and talk." Qin Huaidao dropped a sentence and walked inside.

The group entered the yafang, Qin Huaidao casually found a place to sit down, and the eldest grandson Mei hurriedly followed: "My lord, why do you have time to come here today, if there is anything your lordship commands!" ”

"Sit down and talk."

"Don't dare!" How dare a six-rank county commander sit and talk with a third-grade officer, waiting carefully beside him.

Qin Huaidao was not reluctant, and asked directly: "This official is going to build a bridge on Youshui, how many young people can Zhenfu County hire?" ”

"The young and strong people in the county basically go to build roads, and if they need to, they can only go outside the city to find people."

"Isn't the stone road already paved to the county seat?" Qin Huaidao asked rhetorically.

Changsun Mei hurriedly explained: "My lord, the stone road is paved to the county seat, but the lower officials don't know what to do next and how many people are needed, so they don't dare to mobilize these people, but there are still many villages outside the city, and they are willing to come to pay them, but the road is farther." ”

"There is no need to recruit from villages outside the city, and after the stones are laid, not too many people will be needed, so two hundred people will be drawn from the existing people who are helping to build the road, one hundred people will help intercept the water flow, and another hundred people will collect the big stones." Qin Huaidao said as he took out the bridge repair square and handed it over.

There are hand-drawn drawings on the square eucalyptus, and there are remarks and instructions, which are clear at a glance.

Changsun Mei has presided over local affairs for many years, has experience in repairing bridges, and understands it at a glance, and praised: "My lord, this bridge is about one meter higher than the river embankment on both sides, and the formation of a long slope does not affect the passage of the carts, so high, no matter how big the flood is, it will not affect it, and it is wide enough, and the two carriages are parallel without pressure, but the minister has something unclear?" ”

"Say it."

"What's the cement mentioned above?" Eldest Sun Mei asked bluntly.

"A material, you don't have to worry about this, the official will arrange it, what you have to do is to recruit the blacksmiths in the city to make an iron bar with a thumb thickness and a length of ten meters, can you do it?" Qin Huaidao asked rhetorically.

"Yes, it just takes some time, and is the quality of these bars demanding?"

Qin Huaidao saw that the other party asked the point, not like a nerd, a little hard-working, interested, and said with a smile: "After the iron is burned red, it is forged repeatedly, at least more than ten refining, removing the impurities in it, and then forging it into iron bars, it doesn't need to be too round, it's okay if it's a little irregular, ten refining can't be less, the higher the better." ”

Cement mortar put iron bars, can play a role in reinforcement, ten refining is repeated forging ten times, can remove impurities to a certain extent, of course, hundreds of refining into steel, better, but time-consuming, plus the need for more, not advisable, a bridge for passing carriages, ten refining enough.

Thinking that calcination requires an extremely high temperature and that it costs too much money to use charcoal, Qin Huaidao added: "Changsun County Order, you can arrange for someone to go to Yangxian County to find someone from the official to ask for coke, coke burns longer, the temperature is higher, it is more suitable for calcining than charcoal, and it can also save some costs." ”

"The subordinate officer takes the order." Eldest Sun Mei didn't expect Qin Huaidao to be so proficient in smelting, so she hurriedly wrote it down.

"Any questions?" Qin Huaidao asked.

"The most difficult thing is the cement and iron bars, after listening to the adult's explanation, the lower official has no problem for the time being, so he will arrange for someone to start the work, what else do you have to explain?" Changsun Mei said.

"It must be carried out according to the key points of construction, the silt at the bottom of the river must be cleaned up, and the foundation must be laid according to the standard, so as not to collapse. Qin Huaidao admonished.

"Whoa!" The eldest grandson solemnly agreed.

The two walked out of the yafang, Qin Huaidao took his entourage to the edge of Youshui, looking at the river that was slowly going, it was not easy to intercept it, but it was impossible to repair the bridge without intercepting it, and he was worried that something would happen, so he decided to stay and observe for a few days.

Not long after, Changsun Mei came over with a large group of people and told a few words, some officials commanded the people to take action, some people ran the shoals, packed sand with cloth bags, and some people pushed the cart over to pull it upstream, found a place to throw bags down, intercepted the water flow, and looked very experienced.

Qin Huaidao saw the eldest Sun Mei coming over, and said with a smile: "The organization is good. ”

"Let the adults laugh, there have been a lot of stone bridges built along the Youshui, and the local people have some experience, but they used to serve as conscripts, and everyone didn't expect that there would be wages this time, and they all thought that the adults were good, and the adults benefited one party in this move, and the merit was in the future." Changsun Mei hurriedly explained.

"Don't be a sycophant, the official doesn't like this, cooperating with the imperial court to build the road is the greatest help to the official, the official sees it in his eyes, and the eldest grandson Wuji has a lot of friendship with the official." Qin Huaidao hinted.

The eldest grandson Mei is also a transparent person, and she is transparent at one point, and hurriedly said: "I am willing to follow the adults to repair the road." ”

Qin Huaidao nodded, looked at the construction for a while, the efficiency was a little low, and said: "Slow down, find some more people to come and intercept the water flow, and you must stop it today." ”

"Obey." The eldest grandson Mei hurriedly went.

Not long after, two or three hundred people came to join the construction, and the efficiency was suddenly much higher, and a section of the dam was piled up upstream, and many people jumped down, stepped on the dam, and caught the bags of sand handed over by the people on the river bank, and then passed them down one by one, reinforcing and lengthening the dam.

Two hours later, a large semicircular dam was formed, and the dam still had some water seepage, which could not be completely blocked, Qin Huaidao had an idea, and let everyone dig a drainage channel along the dam on the inside, and the water that infiltrated was guided downstream.

Without water, it was much easier to carry out construction, and everyone began to dredge, and a load of burden was taken out and poured into the nearby wasteland, this fertile soil was very popular, and many people came to transfer it and poured it into their own vegetable gardens for later use.

When it was dark, the silt was cleared, two rectangular pits were dug out, and a rectangular pit was cut out of the riverbank, and the three pits would be the location of the three load-bearing piers.

Seeing that Qin Huaidao was in a good mood, the eldest grandson Mei was also relieved, and said: "My lord, the sky is not there, it is better to go back to the city and let the lower officials do their best to be the landlord." ”

"Forget about eating, you know the official's Zhuangzi in Yangxian County, right?"

"Xia Guan has been there."

Qin Huaidao advised: "That's good, find someone who knows to run overnight, go to Master Cheng Mocheng, and ask him to arrange to send a hundred carts of cement early tomorrow morning, you find a house nearby to vacate it for easy storage, by the way, how is the iron bar made?" ”

"No problem, it's arranged here, the coke has just been brought from Yangxian, and the blacksmiths in the whole city have been requisitioned in place, and the official asked them to rush to work overnight, and it should be possible to build some tomorrow."

"Go and keep an eye on the point, don't relax, there is an opportunity after eating." Qin Huaidao admonished.

Changsun Mei understood the meaning behind it and hurried away happily.

Qin Huaidao took his entourage to find an inn to live in, ate something and went to sleep.

Early the next morning, Qin Huaidao came to the edge of Youshui with his entourage, and found that the people were already building, a cart of big stones pulled over, paved in the big pit, Qin Huaidao saw that everyone continued to pile up, and quickly stopped, there is a layer of big stones at the bottom of the big pit, and then it is necessary to fill mortar, and continue to pile up stones will have an impact.

Changsun Mei also ran over with a group of officials and officials, and when she saw Qin Huaidao stopping her, she hurriedly helped and asked everyone to stop work temporarily, while explaining: "My lord, everyone doesn't understand your construction method, thinking that it is still the previous construction method, and the lower officials don't understand it, so why don't you command?" ”

"Has the cement arrived?" Qin Huaidao asked rhetorically.

"Someone came to report, on the way."

"Where's the bar?"

"Xia Guan just came over there, and he also built some."

Qin Huaidao looked at the other party, and saw that his eyes were sunken and red, obviously he hadn't slept much all night, so he said: "Cut off sixty iron bars according to the length of the big pit below, don't move the other lengths, you also need small iron wires, how many are transported here, go and do it." ”

Twenty tiles are enough to lay the foundation under one large pit, and sixty are laid under three large pits.

The eldest grandson Mei hurriedly went.

In about half an hour, a group of wagons came with iron bars, and the cement also arrived.

Under the command of Qin Huaidao and mortar, everyone tiled the iron bar under the big pit, and then placed it vertically, enclosed into a rectangle, tied tightly with thin iron wire, and the bottom of the vertical iron bar was made in the shape of a hook, hooking the iron bar tiled below, forming a whole.

Wait for all the iron bars to be placed, the cage is tight, the periphery is surrounded by a large plate, and the mortar is also reconciled after it is done, and the ant moving method is adopted, and the buckets are passed down, poured into the big pit, and after the pouring is full, continue to increase the height of the large plate, and continue to water it until the height is reached.

This one-piece pier is very strong.

Qin Huaidao instructed everyone to lay the big slabs horizontally, make a trough shape, connect the three piers into a whole, pour a layer of mortar, and then pave a piece of iron bars, tie each other tightly with thin wires, pour a layer of mortar, and then lay a layer, and so on five times.

The mortar is cement-sufficient, has good adhesion, and is strong enough with five layers of iron bars.

After doing a good job, Qin Huaidao asked everyone to spread another layer of pure cement on the surface, which can play a role in smoothing and waterproofing, and finally sprinkled a layer with raw cement, which is better anti-slip and waterproof.

After all this, the sky has been dark, everyone looks at the bridge and feels novel, I don't know if it can be used, whether it will collapse, this way of building a bridge is the first time to see, I have no bottom in my heart, and I am talking quietly behind it.

Qin Huaidao didn't stop it, new things can only speak with facts, looking at the bridge and feeling excited, this is the trace he left in this world, is it the first cement bridge in history?

"My lord, it's getting dark, do you call it a day first?" The eldest grandson Mei came over and asked.

"Let's call it a day, in addition, arrange for someone to sprinkle water once an hour, sprinkle it everywhere, sprinkle more, but don't flush hard, the cement is not dry yet, don't wash it out." Qin Huaidao admonished.

"Understood, the lower official is watching in person, and my lord can rest assured."

Seeing that the other party was so attentive, Qin Huaidao nodded with satisfaction and went back to the inn with his entourage.

After a busy day, I was tired enough, so I ate something casually and lay down in a hurry.

Early the next morning, Qin Huaidao hurriedly came over to check, and saw that the cement was not cracked, there was no anti-mortar, and the pier below was the same.

After admiring it for a while, Changsun Mei hurriedly came over: "My lord, are you okay?" ”

"Not yet, although the weather is good, there is sunshine, but the cement curing takes more than three days, if it rains, it must be covered with something to prevent rain, the official returns, three days later back to accept, qualified and then build the other side, these days stones, river sand, iron bars must be ready, send people to guard the bridge, do not be destroyed."

"Xia Guan remembered." Eldest Sun Mei hurriedly agreed.

Qin Huaidao said a few more words, and left in a hurry with his entourage, he had been out for several days, and he didn't know how the road on the other side was paved?

Passing through Youshui, beating the horse and running forward for a distance, I saw the villagers of Huihe Town paving the road, those interns recognized Qin Huaidao, and came up to salute one after another, Qin Huaidao stopped, saw that the road was paved well, and said with satisfaction: "This time has been hard, what do you need to do from this official?" ”

A man in brocade stepped forward and said, "Back to my lord, it's not hard, but I think it's very novel, everything is fine, please rest assured." ”

Qin Huaidao saw that the other party's brocade clothes were rotten and dirty, it can be seen that he has indeed suffered a lot during this time, and said with a smile: "Do a good job, strive to spread it to the bank of the Youshui River within two days, this official has taken a step in advance, if you have anything to do, just come and find it." ”

"Congratulations, sir." The crowd saluted.

The official road in front was all paved with stones, but the war horse nailed the horseshoe, and there was no big problem in walking, trotting along the stone road, and after passing Huayang Pass, it was a dirt road, Qin Huaidao accelerated and ran for a distance, and found that there was a stone road in front of him.

In just a few days, it is about to be paved to Huayang, which is not slow, but, why is there no one in front?

Qin Huaidao's heart tightened inexplicably, and he continued to hurry, and when he saw that he was about to arrive at Dawangyi, there was a shout of killing in front of him.

"Not good!"

Qin Huaidao was taken aback, and the horse accelerated to charge, and several entourages also realized that something was wrong and fought the horse desperately.

Several people rushed up, shouting and killing louder and louder, and it didn't take long to see countless people besieging and killing their own people, Luo Zhang commanded in the center, if they were not all equipped with crossbows, they would have already been overwhelmed, and the attacking enemy was dressed strangely, not like a regular army, looking like a mountain bandit.

"How could the mountain bandits dare to attack the imperial court troops?"

Qin Huaidao immediately realized that this group of people was not simple, and after a cursory sweep, there were five or six thousand, and the troops who built the road did not participate in the battle, but gathered together to watch, and did not see Wei Chigong's army.

Things are abnormal.

Qin Huaidao was not in a hurry to rush up to participate in the battle, but went straight to the army that was building the road, worried that these people were cheating, so he didn't dare to get too close, stopped at a distance, and shouted: "Let your general come out to talk." ”

Soon, several generals rushed up, their eyes dodging, and their faces were a little complicated.

"Why don't you go to war?" Qin Huaidao asked directly.

Several people were silent.

But Qin Huaidao could see that several people were not hostile to him, and he reluctantly reacted that these people were surrendering to the army, and they had no motive to participate in the war, and they didn't have the weapons they had at hand, so they didn't want to risk death.

If there is no motivation, give everyone motivation.

Qin Huaidao glanced at Luo Zhang and the others who were fighting, and when it was dangerous, the enemy attacked very hard, using the method of exchanging lives for lives, not like mountain bandits, more like dead soldiers, his face sank, and he asked: "But they forced you not to participate in the war?" Or the promised benefits? ”

"This?"

Everyone lowered their heads in embarrassment, not daring to meet Qin Huaidao's sharp gaze.

Qin Huaidao said coldly: "Don't forget that this is the territory of the Tang Dynasty, if you don't participate in the war because you are afraid of death, and all my people die in battle, will the imperial court let you go?" ”

The words were deafening, and several people reacted, and their faces changed greatly.

Qin Huaidao continued: "Or do you want to be tempted by their promises of benefits, as soon as the imperial army arrives, even if there are benefits, do you have the life to take them?" And they-"

As he spoke, Qin Huaidao drew his sword, pointed at the enemy who was fighting, and continued: "If they really promise benefits, it is just a delaying tactic to stabilize you, and when the people who kill me are too late to flee for their lives, how can they have time to give you benefits?" Afterwards, the court will chase and kill, and it is impossible to give you benefits, so whether you are afraid of death or promised benefits, you had better not have delusions, fight with the officials, kill them, the officials are not to blame in the past, and at the same time prove your determination to take refuge in the court, otherwise, what awaits you is the endless pursuit and killing of the court army, how to choose, you can do it yourself. ”

"Kill—"

With a roar of rage, Qin Huaidao rushed towards the battlefield.

Several attendants also took out their crossbows one after another and rushed over.

The enemy saw Qin Huaidao who rushed up, and immediately divided into a thousand people to come up and rob and kill.

Qin Huaidao pulled out another knife, with two knives in his hand, the killing intent was full of sky, and the war horse white hooves seemed to feel Qin Huaidao's battle intent, let out a long roar, and rushed over with a sharp acceleration, knocking the people in front of him directly into the air.

On the war horse, Qin Huaidao's eyes were sharp, and the two knives, one on the left and one on the right, slashed the people who rushed up, and the men and horses were one, rushing forward with the momentum of crushing everything.

Several entourages also rushed over fearlessly, firing crossbows in unison, shooting those who tried to sneak attack Qin Huaidao one after another, and the war horses also violently collided and trampled on.

There are only a few people, but they have the momentum of thousands of troops.

Especially Qin Huaidao, who rushed to kill in front, the two knives flew up and down, dexterous as butterflies, with the help of horsepower, tearing open the throats of the enemies who pounced one by one in the fastest and most trouble-free way, and killed them.

The enemies were all fighting on foot, and they couldn't stop the war horses from colliding, but they were all very crazy, rushing forward desperately, trying to block Qin Huaidao.

The war horse ran all the way, the strength was already too consumed, some of them couldn't bear it, the speed was slow, and they were slashed a few times, but they were ferocious, and rushed up with a long neigh, knocking more than a dozen people away in one breath, carrying Qin Huaidao to fight out of the encirclement, and the entourage followed closely behind, and also killed from the gap.

The patrol officers who were fighting recognized that it was Qin Huaidao, and avoided the direction of the crossbow shooting, making way for a gap, Qin Huaidao rushed up, turned over and fell off the horse, and asked: "Luo Zhang, what's the matter with the surrender of the army?" ”

"The enemy promised not to kill them, and gave them 100,000 on the spot, asking them to watch the battle, and they agreed, and these bastards don't want to think about the consequences." Luo Zhang said angrily.

Qin Huaidao heard that he was not only afraid of death, but also took the benefits, no wonder he didn't participate in the war, seeing that there were less than four hundred left in the seven hundred patrol divisions, he formed a circle formation and shot in sections to ensure that the crossbow output was continuous, which was enough to block the enemy's attack, but the enemy did not want to die, and the crossbow was consumed, which was the time of death.

"And three hundred?" Qin Huaidao asked.

"The enemy suddenly attacked, and our side rushed to the battle, and more than 300 ...... were killed"

"What about the imperial army?" Qin Huaidao asked angrily.

"General Wei Chi left last night, and the enemy suddenly attacked today, obviously he had a plan......

Qin Huaidao reluctantly remembered the suspicious person he found a few days ago, and actually forbearance until the imperial army left before making a move, ruthless enough, resolute enough, this is not to achieve the goal of vowing not to give up, the fighting spirit boiled, and shouted: "Brothers, aim and fight, don't panic, we are not afraid of hundreds of thousands of troops in Goguryeo, what are these rabble?" ”

They are all men who have fought in Goguryeo together, no one is afraid of death, and when they heard Qin Huaidao's words, they were even more determined in their hearts, and they made their moves more stable.

"Hugh Hugh!"

One by one, they roared away, pounced on the rushing enemy, blocked the attack, and formed a line of death in front of them, through which no one could rush to the front of everyone.

Qin Huaidao stood proudly like a Dinghai God Needle, his eyes were blazing, observing the enemy's situation, and soon found that dozens of people behind the enemy were gathered together to discuss something, like the leader of this gang, his eyes couldn't help but narrow, and the killing intent was terrifying.