At this time, Wu Weiyi and Du Yu didn't dare to believe it anyway, how could they build a new city wall within fifteen days alone?

I only heard Mo Zhai laugh and say to Wu Weiyi and Du Yu at this time:

"Big brother, you see that the terrain of the foothills on both sides of this place can be described as steep and not urgent, and a rolling stone road can be opened between the ravines on both sides! Then he ordered people to collect local materials, quarry stones in the mountains, and then roll them down at the foot of the mountain with a rolling stone road, so that a stone barrier can be built in front of them. Subsequently, the exterior wall section was repaired and leveled, and the excavated stone was directly used to fill the empty leak...... Isn't that just a stone wall? ”

Wu Weiyi heard this, and then looked towards the mountains on both sides, but saw that the middle of the mountain was quite steep, and it was difficult for people and animals to walk, so he asked Mo Zhai again:

"If you say it...... It may indeed be feasible to make a rolling stone road at the foot of the mountains on both sides to unload the quarries in one place! …… However, at a glance at the foothills on both sides, it is difficult for people and animals to climb, but how can they climb the mountain? And, even if you can climb the mountain, how can this rolling stone path open up for pouring boulders? ”

Mo Zhai just shook his head with a smile and said:

"What's so hard about that? It's nothing more than opening the way in the mountains! ”

"Open the way in the mountains? What does this mean? ”

Wu Weiyi didn't understand what he meant, so he hurriedly asked again. Mo Zhai didn't sell Guan Zi either, and directly explained to Wu Weiyi:

"The foothills on both sides of the mountain here are first gentle and then steep, so you can dig a ditch on the gentle slope first, all the way to the quarrying place at the bottom of the mountain, and then you can quarry the stone on the spot, and the quarryed stone will be transported through the canal, and when one stone is quarried, it will naturally become the ditch of another quarry. It's okay to repeat this, but why do you have to go up the mountain to get stones? ”

Wu Weiyi listened as he looked towards the foothills on both sides. Sure enough, as Mo Zhai said, the gentle slopes under the foot of these two foothills are surrounded by circles, and they are indeed excellent natural quarries. Seeing this, Wu Weiyi was completely convinced of Mo Zhai's calculations.

"Mo Zhai is indeed extremely thoughtful...... Now that we have a countermeasure...... Then bother Lao Yu'er to go to the military office with the seal to recruit civilian service, and strive to start construction as soon as possible! ”

Therefore, Du Yu held the seal of Zhu Tihou, and he stayed in the service center to recruit civilian servants for the past few days. Wu Weiyi, on the other hand, stayed in the city tower with Mo Zhai, and gathered more than a dozen stonemasons in the city to plan how to build the city.

……

After a day, Du Yu was in the service station, and hundreds of civilian servants were recruited and sent to join Wu Weiyi. And Wu Weiyi and Mo Zhai didn't dare to delay their work at this time, although the labor is still small, but they also started digging ditches in a dense manner.

According to the plan, Wu Weiyi and Mo Zhai were each in charge of one side of the foothills. All of a sudden, under the foot of the mountain on both sides, there was flying sand and rocks, and dust and smoke were billowing ...... In this way, it was another two days, and the two winding and winding stone roads had been successfully opened.

When the two teams began to quarry at the foot of the mountain, the efficiency of the two sides was equal at first. But two days later, when Wu Weiyi looked at the foothills of the opposite side, he found that for some reason, the quarrying efficiency of the foothills on Mo Zhai's side was much faster than that of him!

But seeing that the boulders there were rolling down from the rolling stone road one by one, the efficiency was extremely high. On his side, on the other hand, he burned the stone while building a fire, and he could only chisel it down after the stone cracked. Not only is it not efficient, but the quarried stones are still quite fragmented!

Wu Weiyi knew that Mo Zhai was on the opposite foothills, so he must have thought of some better way to open the stone. So I decided that I would hurry down the mountain that day, and climb all the way to the opposite foot of the mountain.

However, what made him more strange was that on the foothills on this side of the mountain, he could see some bamboo pipes that had been split in half or exploded. Seeing this scene, Wu Weiyi couldn't help but become more curious. Then, it was in the quarry that Mo Zhai was found:

"Brother Mo Zhaixian! ......”

Hearing this call, Mo Zhai immediately turned around, only to see that it was the eldest brother coming! Mo Zhai felt extremely happy, but he didn't seem surprised. Seeing him step forward, he opened his mouth and said to Wu Weiyi:

"Hey, hey! …… Big brother really can't hold back, right?! Now that I'm here to Mo Zhai, I'm here specifically for the art of opening stones? ”

It turned out that this Mo Zhai had long known the purpose of Wu Weiyi's visit this time, which was to find out what kind of means he was using here. I only heard that at this time, Wu Weiyi was also very humble and asked him for advice:

"Huh...... I don't know what kind of means Brother Mo Xian used? …… You quarrying, it's like you're as handy as a cook! It's really admirable! ”

At this time, I saw that Mo Zhai took a step back, smiled knowingly, and asked Wu Weiyi again:

"Huh! Big brother doesn't need to say much, the so-called hearing is false, seeing is believing! What kind of trick is it, the eldest brother will know when he comes here to see! ”

So, Wu Weiyi followed Mo Zhai to a boulder that was about to be mined, but Mo Zhai was quite embarrassed and boasted:

"Dare to ask Big Brother! If such a huge stone is on the big brother's side, how many days will it take to finish mining? ”

Wu Weiyi looked up, only to see that this stone was as tall as three people, and the bottom of the stone required at least four or five people to hold it! Wu Weiyi just shook his head and said:

"I'm afraid that it will take a day to burn the stone, and it will take a lot of work to dig it, so the boulder may take a day and a night......"

Mo Zhai listened, but he just smiled, gestured with his hand and said:

"Here in Mo Zhai, it only takes an hour, which is more than enough!"

Wu Weiyi couldn't help but be shocked, and thought to himself:

"This ...... How is this possible! Mo said that now this is the Spring and Autumn Period and the Warring States Period, even if it is placed in my era, explosives quarrying can be placed, but I am afraid that it will be more than an hour to arrange the explosive lead! ”

I saw that Mo Zhai ordered someone to take a few tubes of bamboo knots, and then Wu Weiyi took them from Mo Zhai's hand and examined them carefully, but he didn't find anything strange about this bamboo tube......

Subsequently, Mo Zhai ordered people to circle around the bottom of the boulder here. Around the boulder, there were several small holes dug straight down, and those small holes were the same thickness and depth as the bamboo tubes in their hands.

Then I saw that the stonemasons stuffed half of the bamboo tubes into these small holes, and poured boiling water into the stone caves along the protruding bamboo tubes!

About half an hour later, Mo Zhai saw that everything was ready, so he turned around and said to Wu Weiyi, who was waiting on the side:

"Big brother! Now everything is ready, and he is optimistic about Mo Zhai's means! ”

Mo Zhai said, only to see him walking forward with a copper hammer in his hand. Stop in front of a small hole with a bamboo pipe, pick up the sledgehammer and smash it hard!

"Bang!"

I heard a loud bang knocking down, and the bamboo pipe was deeply pierced into the hole. And what is strange is that around the bamboo pipe, there are a few more stone cracks in white!

Then, seeing Mo Zhai walk quickly to another small hole with a bamboo pipe, he picked up the copper hammer and smashed it violently! …… I saw that there were a few more stone cracks in this stone cave. And this time, I saw that there was a main seam in it, which was connected to the first stone crack before!