This road is actually not a standard cement road, some cut corners, and the width is much narrower, but there are no vehicles in the Da Li Dynasty, not to mention the mud trucks and heavy-duty trucks, which are the most ruined vehicles, but the farmers push a small rooster cart, lift the top of the small sedan chair, and top the sky, but it is just an ox cart and a horse-drawn cart, this simple version of the cement road, but it will not become a potholed tofu scum for a few months. Pen "Fun" Pavilion www.biquge.info

Guo Dalu originally wanted to pave the cement road from Houlong Village to Yinxian County, but the amount of work was too large, and a third of it was barely completed, but only this section of the cement road had already stunned Lu Yueding and a group of eunuchs and generals from the capital.

Lu Yue Dinggao rode on the horse, and only felt that after stepping on the cement road, the sound of hooves was extremely flat, but those eunuchs and generals on foot exclaimed: "This cement road is actually a whole piece! Grandpa, where did this stone slab come from? No, even the stone slab can't be put together into such a long road!"

Huang Xueheng hurriedly explained: "This cement is not a single piece. Concrete prototypes are like clay that can be molded into any shape by mixing with water, and when dry, they become as hard as stone. The immortal's technique of turning mud into stone is nothing more than that. ”

The eunuch generals couldn't figure out how the mud and water had become so hard even if they wanted to break their heads, and even the generals quietly knocked the ground with their guns, and the stainless steel guns just smashed a few white spots on the cement pavement, and they all shook their heads and stuck out their tongues.

A little eunuch suddenly shouted: "Alas, this road is bad, and there are cracks on it!"

Lu Yueding took a look on the horseback, hey, sure enough, there were cracks on the road, and there was more than one, and the strange thing was that this gap was arranged very neatly, like cutting tofu, cutting the smooth road surface into pieces.

Huang Xueheng said with a smile: "It's okay, it's okay, the cracks in the middle of the cement road are called expansion joints, which are used to prevent thermal expansion and contraction, so as to avoid the collapse of the cement pavement." ”

The little eunuch who was the first to find the crack said curiously: "What does this mean?"

Huang Xueheng touched his beard, shook his head and said: "Mr. Houlong has taught me a lesson in Yixue, everything has the principle of heat expansion and cold contraction, when it encounters heat, it will swell, and when it encounters cold, it will contract, even extremely hard things such as steel and stone. When the cement pavement is exposed to the sun in summer, it will also expand, and the pavement will collapse when it is squeezed against each other, so it is necessary to leave this expansion joint. Similar to this seam, there is also a reservation between the rails on the railway. By the way, there is a thing that goes in the opposite direction with thermal expansion and contraction, that is, water, water freezes when it is cold, but the volume increases, and it will break the cups and bowls, which is the reason. ”

Including Lu Yueding, the announcement team was stupid, and they wanted to refute it, but they didn't know where to start, besides, the truth of this hot expansion and cold contraction was said by Mr. Houlong, can the big guy still oppose his "old man" words?

Lu Yueding nodded indiscriminately: "That's right, it's right, hot expansion and contraction, heat expansion and cold contraction, this winter, even our family is shrinking into a ball, but it's not 'cold contraction'." ”

Huang Xueheng couldn't help laughing, and he didn't justify the true meaning of heat expansion and cold contraction, in fact, he himself didn't understand it, these truths were still made up from the righteous class, because he was busy with official affairs, he couldn't squeeze out the whole time to listen to the class, and his academic progress was far below his son Huang Manyuan, and he just learned some new terms, bluffing people like Lu Yueding.

Walking on the cement road, the speed is not a little bit faster, there are already that generals thinking, if the cement road is paved all over the Li Dynasty, then the march will be much more convenient, unlike now, on a sunny day to eat a mouthful of ash, on a rainy day is to roll a body of mud. It's just that, thinking that cement is the legal requirement of the Science Gate, Mr. Houlong must be unwilling to easily sacrifice the immortal arts.

On the hill ahead, there was a memorial arch, Huang Xueheng said with a smile: "The memorial arch is newly erected, and under the memorial arch is Houlong Village." ”

This memorial arch can be much higher than the last commendation drip irrigation method from the archway, the same is poured cement, while the cement is still soft, by the master craftsman to depict the dragon and phoenix, auspicious clouds, etc., if this thing is placed in the 21st century, it is a fake antique, must be scolded by cultural relics experts to come out, but in the big Li Dynasty is the only one.

When everyone passed under the archway, looking at the whole beam and pillar of the same thickness up and down, the atmosphere did not dare to make a sound - obediently, this is thicker than the thousand-year-old golden silk nanmu on the golden palace, just look up and be dizzy.

There was a little eunuch whose head was raised too high, and his hat accidentally fell off, and everyone burst into laughter. The little eunuch blushed, picked up his hat, and slapped the dust - in fact, the cement road was very clean, and there was not much ash, and some villagers even took off their shoes and stepped on the smooth cement road with bare feet when they walked on the road, just for fear of stepping on Mr. Houlong's magic weapon.

The little eunuch was just about to put on his hat, and when he inadvertently looked up, he saw Houlong Village under the archway, and with a click, the hat fell to the ground again, but this time, the people next to him did not laugh at him, because everyone was in a daze, looking at Houlong Village at the foot of the mountain in a daze, and after a long time, someone sighed heavily: "Grandpa Tian, is this the Immortal Palace in the Nine Heavens?"

I saw that there were tall buildings standing in Houlong Village, the high ones were seven or eight stories high, the low ones were four or five floors, the middle one was ten stories high, like a pagoda, there was a huge disc on the top, there were two needles on the disk, one long and one short, the long needle was aimed at the top end, suddenly, the bell bell, the top of the tall building made a loud noise, and it sounded ten times before it stopped.

Lu Yueding and other eunuchs are all from the imperial city, and they have also seen the royal wealth, in the Forbidden City, there are also high-rise pavilions, but the building is only three stories high, as for the high platform, in fact, it is a solid platform built with soil below, and then build a pavilion on the platform, but look at the high-rise buildings in Houlong Village, each floor has doors and windows, obviously it can live in people! How did this hollow high-rise building be built?

Lu Yue was the emperor's confidant and great eunuch, but he also had the fate to go to some cultivators' sects, many cultivators' houses are actually the same as the mortal world, but they float on the clouds, water or cliffs, and isolated islands with spells, in fact, some cultivators do not want to live in the house at all in order to absorb the aura of heaven and earth, but stay in caves, big trees, and even potential underwater. It is extremely rare for Houlong Village to be surrounded by such high-rise buildings!

Lu Yueding didn't know, in fact, in the original design of Guo Dalu, it was just a small building with four or five floors, but Zhao Kang and other craftsmen built it later, and more and more discovered the wonders of reinforced concrete. (To be continued.) )