Li Su rushed to the Taiji Hall as fast as possible, now the sky is just dawning, it is the time when Li Shimin went to the court, after arriving at the Taiji Palace, Li Su wanted to break in directly, but was stopped by the Qianniu guard guarding the door, the leading Zhonglang will be a lean and thin middle-aged man, no matter what Li Su says, it is a black face and not allowed to enter, Li Su has no choice, can only let people go in first to report, and he is waiting for Li Shimin to summon outside.

It is estimated that something important is being discussed inside, and the person who reported it has not been seen. Li Su was bored waiting outside, and he stared at the Qianniu Wei Zhonglang for a long time. Li Su suddenly found that the other party was a little interesting, and he was not afraid of facing his own prince, and looked at his face, so he asked, "I don't know what the general is called?" ”

"Your Highness, the last general Chapter 36 happened to meet the cattle man is the thousand cow Wei Zhonglang general Su Dingfang, if His Royal Highness is dissatisfied, you can go to the general to complain!" Su Dingfang ** said, he thought that Li Su was resentful of himself for blocking him from entering the hall, and wanted to ask his name so that he could retaliate in the future, so he would answer like this.

"Hehe, General Su misunderstood......" Li Su saw that the other party had misunderstood his meaning, and opened his mouth to explain with a smile, but suddenly a flash of inspiration flashed in his mind, and the three words 'Su Dingfang' crossed through his mind like a comet, making him suddenly think of a famous figure in the early Tang Dynasty, Li Su was excited, stepped forward and grabbed the other party's hands and asked, "Su Dingfang?" But that Su Dingfang, who led two hundred horsemen and stepped on the camp of Jieli Khan? ”

Su Dingfang was also stunned, he didn't expect Li Yu to have such a big reaction after hearing his name, and he even knew that he was the most proud of the battle, and his face turned soothing and said: "His Royal Highness Qiqi is the last general." ”

"Oops~, disrespectful and disrespectful, I didn't expect to meet Brother Dingfang here, I don't know where Brother Dingfang's family lives, and the younger brother will definitely visit him another day?" Li Su's expression of digging up the treasure was very affectionate and close to Su Dingfang.

This Su Dingfang is not simple, Chapter 36 happened to meet the cattle don't look at it now is just a small lieutenant general, but after Li Zhi ascended the throne, Su Dingfang's pearl finally washed off the dust and began to shine, the most famous of which is his extraordinary record of destroying the Three Kingdoms and capturing the three masters, and what is even more amazing is that Su Dingfang was already in his sixties at that time, and he could still make such an immortal achievement in the year of the sixtieth year, which can be said to be a typical representative of the late bloomer. Of course, there was another cow man with a very similar experience to him during the same period, who also began to make his fortune after the age of sixty, but that person was born as a civil official, and it is estimated that he is still doing a small history.

"Uh~, Your Highness......" Su Dingfang was uncomfortable by Li Su's enthusiasm, and he didn't know what to say when he opened his mouth, and at the same time he felt a little guilty in his heart, King Liang was not the kind of cautious eye he thought at all, and he didn't pay attention to that little thing just now, and now he even had to visit in person, which made Su Dingfang feel a little inexplicably moved in his heart.

"Your Highness, Your Majesty has summoned you and invited Your Highness to enter the palace!" At this moment, the little yellow door that had just gone in to report came out of the hall, saluted Li Su and said, just to relieve Su Dingfang.

"What a coincidence!" Li Yu muttered in a low voice, he still wanted to take this opportunity to have a relationship with Su Dingfang, but now was not a good time, so he could only turn his head and say to Su Dingfang: "Brother Dingfang, I still have important things to do today, since I already know that you are serving in Qianniuwei, I will definitely come to drink and talk to you in the future!" ”

"Your Highness is polite, the last general will definitely wait for Your Highness when the time comes, and it is still important to get down to business." Su Dingfang wiped the sweat from his forehead and said, he and Li Su only met for the first time, but he didn't expect Li Su to be so enthusiastic, which made him confused for a while, and he was looking forward to Li Su leaving soon, and he could also have time to sort it out.

Li Su hugged his fist at Su Dingfang, and then turned around and entered the main hall. The Chinese martial arts ministers of the palace were all there, the civil officials were headed by Changsun Wuji and Fang Xuanling, and the military generals were headed by Li Jing, and there was originally a Li Xiaogong who was listed as the head of the military generals with Li Jing, but in order to avoid suspicion, Li Xiaogong was idle at home early and almost never went to court.

"Son-in-law Li Su, see my father!" Under the puzzled gaze of the civil and military ministers, Li Su walked forward quickly.

"Hehe, it's the first time I've seen Rokuro get up so early, looking at your red face, I guess the cement has been completed, right?" Li Shimin has also been paying attention to the cement matter, just now I heard Li Su ask to see, he counted the day, just about the same time as Li Su estimated, and immediately guessed his intention.

"Father is wise, now that the cement slab has been made, just now the son smashed a few with a sledgehammer, and the numbness of the shock's arms only left a few shallow marks." Being joked about by his father made Li Su feel warm, but he didn't forget the business, and immediately told him about his previous experiments.

"Good! It just so happens that the ministers are here, so let's go and take a look with me! Li Shimin has been waiting for several days, and now when he hears that the cement has been successfully tested, he can't sit still at the moment, and he wants to see it immediately when he stands up.

"Your Majesty, the government affairs above the court are important, and now we are discussing the matter of building a road in Jiannan, how can I be interrupted by some irrelevant things on the way?" At this moment, the old stubborn Kong Yingda stood up and dissuaded him, saying that he was not present when Li Su offered cement last time, and Li Su did not make a big deal about cement, so Kong Yingda didn't know what cement was for.

When Li Su heard this, he secretly exclaimed in his heart that it was a coincidence, but he didn't expect that the court was also discussing the matter of building the road today, and he was really lucky.

Li Shimin smiled and said: "Kong Qing misunderstood, cement is not an irrelevant thing, this thing is very useful, you will know it when you see it." After speaking, he ignored Kong Yingda, and followed Li Su to hurry to the general as a prisoner, Kong Yingda had no choice but to follow behind with the civil and military officials.

The group rushed to the cement workshop in a mess, and made Bai Qing, a petty official of the ninth grade, look straight in the eyes, most of the people were wearing scarlet robes, and there were even many people wearing purple robes.

"Weichen Yuwen Hu, welcome to the holy driver!" Fortunately, Yuwen Hu had already come at this time, so there was no need for Bai Qing, a nine-rank petty official, to come forward. Although Yuwen Hu is from the third grade, he is also a member of the imperial court, and he has a special position as a master craftsman, and he does not have to go to the court every day like ordinary courtiers, but occasionally when he is about to be a prisoner, Li Shimin will summon him.

"Aiqing is flat!" As soon as Li Shimin entered the yard, he saw the standing cement slab, and after Yuwen protected it, he walked straight to the cement slab and turned around a few times, and also reached out and touched it, this cement slab looks similar to a stone, but it feels much rougher than ordinary stones.

Li Su beckoned to Bai Qing, Bai Qing immediately understood, and took out a bucket of cement powder from the cement warehouse and handed it to Li Su, Li Su stepped forward with the cement and said: "Father, please see, this is the calcined cement, in addition to the color, it looks the same as flour, as long as the water is mixed and poured into the mold, it can become a solid cement board after drying, of course, in order to save costs, it is generally added with some gravel and sand, as long as the proportion is appropriate and stirred evenly, the strength after condensation will not be reduced." ”

Li Su pointed to the cement and talked eloquently, although Fang Xuanling and others had known about cement for a long time, but after seeing the real thing with their own eyes today, they still felt very surprised, and although Kong Yingda and others were pedantic, they also understood at this time, according to the characteristics of cement introduced by Li Su, they could also guess that there must be a lot to do with road construction, but what made them strange was that such an important matter, why should Li Su, the prince who was not taken seriously, be responsible?

Li Su led Li Shimin and the others to a freshly mixed cement pool and said: "Father, please see, this is the cement mixed with crushed stone and sand, and after it dries, it will become these extremely hard cement slabs." Li Su said and instructed the craftsmen to dig out a few cement slabs on the ground that were almost dry.

"This cement is indeed wonderful, who would have thought that this flour-like thing, after adding water and sand and stones, would become like a stone." Li Shimin grabbed a handful of cement powder in his hand and said with admiration.

Li Su saw that Li Shimin was in a high mood, so he picked up the big hammer on the ground and said with a smile: "Father, are you interested in smashing two hammers and trying the hardness of this cement board?" ”

"Haha~, okay, let me move my muscles and bones today, I think I was also a brave champion of the three armies, with my arms twisted, and at least hundreds of catties of strength?" Li Shimin saw that his son was so funny, and he was also very interested at the moment, took the hammer and tried it, and then picked it up and smashed it on the stone slab.

"Huh~" Although Li Shimin's strength is much greater than that of the underage Li Su, it is a pity that it is useless to the cement board that is half a foot thick, except for the more splashed debris and the deeper print, the cement board is not damaged at all.

"Huh~, this thing not only looks like a stone, but even its hardness is no worse than a real stone." Li Shimin was also very surprised, he really couldn't figure it out, why did this flour-like thing, after adding water and sand and stones, really become as hard as a stone?

"Your Majesty, the old minister also has some itchy hands, let the old man try it too!" Cheng Yanjin, who likes to join in the fun, sees that this cement board is so magical, and can't help but want to try it himself, he is a famous brave general in the Tang Dynasty, and the credit is all scored with a knife and a shot, if only about strength, he is much stronger than Li Shimin.

"Okay, Zhijie, you can try it too." Li Shimin also wanted to see how hard the cement slab was, so he immediately agreed.

Cheng Biting Jin didn't use the hammer in Li Shimin's hand, but asked the craftsman to find him the largest hammer, the hammer head alone is the size of a watermelon, and the hammer handle is the thickness of an adult's arm.

"Phew~Bah~" Cheng Biting Jin spat on his two hands, and then slowly pulled the hammer to the top of his head, and then smashed it down with all his strength under the attention of the surrounding civil and military officials.

"Boom~" Li Su only heard a loud noise, as if there was a bomb exploding in his ear, the brain shook 'buzzing', and the same cement fragments were splashed, and there were many people who were close to him who couldn't dodge, and those who reacted quickly covered their faces with wide sleeves, and those who reacted slowly were hurt by the cement fragments, and those with bad temper scolded directly on the spot, but unfortunately Cheng Biting Jin was very thick-skinned, and he didn't take everyone's angry scolding to heart at all.

When the dust cleared, and then looked at the stone slab smashed by Cheng Biting Jin, everyone was surprised to find that the hammer head of the oversized iron hammer was actually embedded in the cement slab, and the surface of the cement slab was centered on the hammer head, sinking inward into a big pit, but even so, the cement slab was still not broken, which was harder than many stones.

"Your Majesty, this thing is of great use, if it is used to build a city, it is not only fast and convenient, but also several times stronger than that built by bricks and stones, it is really a great weapon given to me by God in the Tang Dynasty!" Li Jing, who had been silently watching Li Su's performance since the beginning, suddenly stood up and said that the god of war is the god of war, and before Li Su could say it, he had already seen the military value of cement.

Li Shimin's eyes lit up after hearing this, he thought that this cement was only used to build roads, but after Li Jing's reminder, cement should have other important uses, Li Su, this muddy boy, has really grown up, and brought a lot of surprises to himself.

"Your Majesty, if you use this thing to build a road, then Jiannan will no longer have the pain of traffic, even if there is something, the army will come at night, and you can calm the chaos in one fell swoop, if you can replace the roads of the whole country with cement roads, then the traffic will be developed and the freight will be smooth, and all industries will be prosperous, and my Datang can also be more prosperous, so I ask Your Majesty for permission, even if it takes years or even decades, the cement road must be built." Fang Xuanling is worthy of being the head of the civil officials of the Tang Dynasty, and his long-term vision is beyond the reach of others, and he immediately saw the importance of transportation.

After hearing the words of Li Jing and Fang Xuanling, the civil and military officials below were also discussing, some were admiring, some were indecisive, but no matter what their attitude was, they all knew that this cement was definitely a good thing for the benefit of the country and the people.

"Your Highness, there is something the old minister would like to ask?" At this moment, a voice that Li Su least liked to hear asked him!!