ps: At the request of the book friend Xiaolou, I will upload another chapter today, not much to say, Lao Yu has to code words overnight to prepare for tomorrow's chapter.

Li Su curiously followed Li Ke into the small door, and found that there was a different world inside, this is a room similar to a warehouse, but the area is not large, except for two rows of wooden shelves for placing items, there are basically no other furnishings.

Li Su stepped forward and took a closer look at the items placed on the shelves, and found that these things were either delicate or clumsy, and some were semi-finished products, and it was estimated that these were all things that would be made by craftsmen in prison. Suddenly, Li Su's eyes were attracted by a group of pottery, this group of pottery is composed of ladies, horses and camels, and these pottery are all colorful, whether it is a figure or an animal, they are all vivid and vivid, the color is gorgeous, Li Su's place Chapter 34 Burning Cement (middle) will notice them, because I have seen a set of pictures of Tang Sancai in my previous life, and this group of pottery is almost exactly the same as the picture.

"This is the legendary Tang Sancai, and it really lives up to its name!" Li Su said to himself with an obsessive face, Tang Sancai is a lively collection of antiques in later generations, and the price is even more outrageous, and it can even be auctioned at a high price of tens of millions.

"Sixth brother, what are you staring at that pile of artifacts, and you don't feel unlucky? Come and see the good things found for my brother! Just as Li Su's breath was about to flow out, Li Su held a cylindrical object next to the shelf and shouted.

Hearing the word 'dark vessel', Li Su was immediately frustrated, Tang Sancai was indeed a dead weapon used for funerals, and it was not worth much now, he had paid it back for a long time just now, but Li Su was quickly diverted by the things in Li Ke's hand.

"This ...... This can't be the legendary fireworks, right? Li Su looked up and down at the bamboo tube with the thickness of the arm in his hand, what Li Ke found just now is this thing, the upper and lower two bamboo knots of this bamboo tube are kept, and I don't know what is put in it, so that the bamboo tube Chapter 34 Burning cement (medium) is very heavy, in the middle of the bamboo section above, there is a small hole drilled, and a rope-like thing passes through the small hole, the more Li Su looks at it, the more familiar it becomes, this thing is almost no different from the fireworks played during the New Year in later generations.

"That's right, this is the fireworks that will be developed by the superintendent, I don't know what the effect is, why don't we go and put one on it?" As soon as Li Ke was interested, no one could stop him. After speaking, regardless of whether Li Sutong agreed or not, he went to the front hall with a few fireworks.

"Snort~" As Li Ke lit the fuse, and then quickly retreated, after a while, he saw a burst of green smoke coming out of the bamboo fireworks, and then a stream of red-green sparks erupted, which lasted for about a minute, and after the gunpowder inside burned out, it stopped.

"Well, it's really good, it's much more gorgeous than last year's fireworks, and it lasts longer, it seems that a lot of effort has been put into being a prisoner." Li Ke nodded with great satisfaction.

Li Su next to him pouted, this kind of fireworks in front of him will be put in the future generations, it is estimated that even children are not willing to play, and even in Li Su's opinion, this is not a real fireworks at all, the fireworks in his impression should be the kind of fireworks that hit the sky with a salute and then exploded to spread half the sky, that is the real fireworks.

Although the fireworks in front of him are not worth mentioning, it also reminded Li Su that gunpowder appeared as early as the Jin Dynasty, but until the Tang Dynasty, it was only used to make fireworks, and even firecrackers had not yet appeared, let alone applied to the battlefield. The emergence of gunpowder marks the official entry of thermal weapons on the stage of history, and then gradually replaced cold weapons, directly changing the form of human warfare.

It seems that there is a chance that the gunpowder will have to be improved. Li Su secretly made up his mind in his heart, the current gunpowder can only be used to make fireworks, it is estimated that there is a problem with the formula, and the best ratio of gunpowder cannot be reached, so the power is very small, which is not difficult for Li Su, thanks to the blessing of the education system of the Celestial Empire in the future, Li Su learned the best ratio of gunpowder when he was in middle school.

Just as Li Ke was thinking about the gunpowder, Yuwen Hu walked in from outside the hall, and was slightly stunned when he saw the fireworks set off by Li Ke, and then smiled: "Your Highness is so interested, this kind of improved fireworks has just been sent to me, and there is still room for further improvement, and I will definitely give you some when it is ready." ”

"Then thank you Brother Yuwen!" Li Ke was also not polite, and generously returned the courtesy.

Yuwen Hu smiled slightly, then turned to Li Su and said, "Your Highness, the manpower and materials are ready, please move Your Highness!" ”

"Brother Yuwen is polite, in the future, you will be like my third brother, just call me Liuyan, it is too angry to call His Highness." Li Su walked up and said with a smile.

"This ......" Yuwen Hu was slightly stunned, his background was not as good as Li Yong and Cheng Huailiang, and it was the first time he met Li Yu, so calling him Liu Yan was really a bit of a shallow conversation.

"Brother Yuwen, don't shirk it, Liuyang and I are not outsiders, and there will be more places to deal with in the future, calling His Royal Highness all day long, if you don't bother me and Liuyang, I'm also annoyed." Li Ke also smiled and persuaded.

"Hehe, that's it, then the lower official is better to be respectful than to obey his fate." Yuwen Hu saw that Li Ke and Li Su were sincere, so he no longer shirked, "Then please ask Liuyang and Brother Ke to come with me, check the manpower and materials, if there is no problem, then start refining immediately, so that Liuyang can hand over as soon as possible." ”

"Okay, Brother Yuwen leads the way!" Li Ke and Li Su said at the same time.

The three of them walked through several courtyards until they reached a courtyard on the westernmost side of the prison, next to the city wall. As soon as he entered here, Li Su smelled a pungent smell of lime, and by the wall of the courtyard, there were several earthen kilns, which seemed to have been used to burn lime.

"See the two highnesses!" As soon as the three of them entered the courtyard, they saw a junior Jiupin official dressed in a light cyan official uniform kneeling down with a helper to greet them. Looking at the grades of officials in the Tang Dynasty, they can be distinguished only from the official uniforms, of which the third grade or above is purple; Four products, deep crimson; Five-pin, shallow crimson; Six-pin, dark green; Seven pins, light green; Eight pins, dark blue; Nine pins, light green.

"Get up!" Li Ke waved his hand and kindly asked them to get up, and everyone hurriedly thanked them.

Yuwen Hu stepped forward and pointed to the forty or fifty-year-old junior official of Jiupin and introduced: "Brother Ke, Liuqing, this is the right colonel Cheng Baiqing, refining lime has always been in charge of him, Bai Cheng has been working as a supervisor for more than 20 years, and he is loyal and reliable, so this cement refining work, he mainly led people to assist Liuyang, and these people behind him In addition to the original lime craftsmen, there are also porcelain craftsmen transferred from other departments, all of whom are skilled, honest and reliable people. ”

"Xiaguan Baiqing, see the two highnesses!" Bai Qing was very eye-catching, and when he heard Yuwen Hu introduce himself to Li Su, he immediately stepped forward and saluted again. He has been a nine-rank petty official for more than 20 years, and he has not been promoted, this time it was Yuwen Hu who promoted him and gave him this great opportunity, if he can assist Li Su to do this cement, he will definitely have a share of the credit, and maybe his grade will also rise by a liter, so he made up his mind to hold Li Su, the thigh of King Liang.

Li Su looked at Bai Qing and found that although this person had a dark complexion and thick hands and feet, if he took off the official uniform on his body, he was actually no different from the craftsmen behind him, but his wrinkled face had a pair of shrewd little eyes, and he blinked flexibly from time to time, obviously a flexible and clever character.

"Well, there will be a Lao Bai in the future!" Li Su is very satisfied with this person, looking at his appearance, you can guess that he is a craftsman, and he is also very smart.

Seeing that Li Su was so kind to him, Bai Qing was very honestly afraid, and he didn't even dare to say it. He is a petty official of the ninth grade, with a low background, and his status in the general prison is only higher than that of ordinary craftsmen, where has he ever received such courtesy?

"Bai Zhicheng, you now command the craftsmen to grind the limestone, clay, slag and gypsum into powder, and then mix the limestone and clay in a ratio of 5:1, plus a small amount of slag powder!" Li Su looked at the materials prepared by Yuwen Hu and found that they were all very good, so he instructed Bai Qing who was following behind him.

"Yes, the villain will do it!" When Bai Qing heard Li Su's order, he immediately took action, directing the craftsmen to run forward and backward, apparently wanting to behave well in front of Li Su.

The crushing of materials is an indispensable process for cement firing, and the dust raised is extremely harmful to the human body. Li Su couldn't leave, but the three of them were choked and coughed, and Bai Qing gave them three wet towels to cover their mouths and noses, which made Li Ke and Li Su have a good impression of Bai Qing.

After a while, the materials were ground into powder, and then under the command of Bai Qing, the limestone, slag and clay were mixed according to the ratio that Li Su said, and the gypsum powder was put aside for later use, and then the mixed materials were put into the lime cellar for calcination. In addition, the calcination time is relatively long, and Li Su and Li Ke can't wait here, so the following work will be managed and supervised by Bai Qinglai, this is the advantage of being an official, most things don't have to be done by yourself, naturally there are subordinates to do it.

Before leaving, Li Su explained a few precautions to Bai Qing, and Bai Qing wrote them down one by one with a pen, and this serious attitude made Li Su very satisfied. The three of them came out of the cement-burning courtyard to the hall, Li Su looked at the sky and said, "Brother Yuwen, it's still early, and thanks to your help today, why don't we find a place to have a drink?" ”

As soon as he heard that he was going to drink, of course Li Ke would not object, and tried his best to push Yuwen Hu to go, but Yuwen Hu was a little hesitant, and said with a sad face: "It is said that Liulang is invited, of course I want to go for my brother, but in the past few days, Lord Zhou, who is in charge of the prison with me, is not there, and the entire prison will be managed by my brother alone, and I really can't leave." ”

Yuwen Hu paused here when he said this, then pointed at Li Su and Li Ke with a smile and said: "And today is really not a good time to invite guests to dinner, not to mention anything else, you look at yourself, where do you still look like a prince?" ”

Li Ke and Li Su mentioned it by Yuwen Hu, only then did they find that the clothes on their bodies were in tatters, they had a fight in the restaurant in the morning and still haven't had time to change their clothes, and they also deliberately tore a few big holes, plus they were covered in dust just now, and even their hair was dusty, if they weren't familiar with people, they really couldn't believe that they were noble princes.

"Hahaha~, if it weren't for Brother Yuwen's reminder, I wouldn't have found out that I was so embarrassed, this looks like I guess I will be kicked out as a beggar even if I enter the restaurant!" Li Ke looked at himself and then at Li Su, and then the two laughed together.

"That's it, then don't bother Brother Yuwen, when the cement is finished in the coming day, you must not get drunk with Brother Yuwen!" Li Su also smiled.

"Hehe, I can get Liulang's invitation, but I can't ask for it for my brother, I have long heard that the wine and food of Liang Wangfu are unparalleled, but I have never had the opportunity to taste it, and I must drink it happily." Yuwen Hu said with a smile. Don't look at him wearing purple clothes and being a member of the third grade, but firstly, the strength of the family is not obvious, and secondly, the general who presided over him is not an important department, so he is not qualified to participate in the last Five Kings Banquet.

"Okay, when the time comes, the younger brother will definitely prepare the wine and food, and wait for Brother Yuwen in the mansion." After Li Su finished speaking, he bowed his hand, and then left with Li Ke. !!