Wu Qian can be regarded as an eye-opener today, his own knowledge is more miscellaneous, interested in everything, when Hong Tao demonstrated to him the power of artillery, and explained the working principle of artillery, he probably understood, so he became interested in the knowledge of casting. However, when he heard that this cannon weighed several thousand catties and had a huge force when fired, and that it could not be carried by a non-strong ship, he immediately became interested in the shipbuilding technology of Jinhewan again. When Hong Tao showed him the sextant and the lunar distance watch, he became an astronomy enthusiast again, holding the sextant to the sun, his eyes were pierced with tears and he still refused to put it down. What finally made him give up the sextant was a pile of gray dirt and a large gray stone. Hong Tao said that this pile of soil and water will become a big stone next to it after a day or two, which is stronger than a stone, and the hammer will hit it, just a white spot.

"Sir, great talent! This is the land of the gods! It's a pity that it can't be used in the human world...... cough cough cough ...... "Wu Qian didn't think that the cement ash had soiled his purple robe, so he grabbed it fiercely and refused to let go, and even leaned under his nose and sniffed it.

"Where is there any sacred land, this thing is called cement, it is made of limestone, it is very cheap, it is cheaper than asking craftsmen to dig the mountain. I have already given a bag of samples from the official family and Zheng Xiang, and I want the imperial court to allocate a part of the soldiers who are unbearable to fight to produce this kind of cement. If the cement workshop can be put into operation, then I will be able to reverse the flow of the river, displace the mountains and rivers, and turn the sea into mulberry fields! As long as you make a skeleton out of bamboo and pour this thing mixed with stones, in two or three months, this Yongjiang River can be blocked, and I want it to be diverted to that way to let it flow that way. Lord Wu is a parent official, so he should know the use of this thing, right? "Hong Tao will not miss any opportunity to fool the officials of the Southern Song Dynasty. One more person can agree with his theory. He will be able to influence the Southern Song Dynasty court a little more. can make this dynasty develop in the direction you want.

"Riverbank!" Wu Qian is really not a nerd who reads to death, and his eyes lit up in an instant.

"That's right, the Yongjiang River has a tidal wave every year, and the farmland along the river is unbearable, if you can use this thing to build a dam by the riverside that is often flooded by the tide, it doesn't take too much manpower, you can do it once and for all, I dare not say a hundred years." At least a couple of decades are fine. "Here, after wasting so much strength for half a day, Hong Tao is waiting for Wu to dive into the trap. Historically, it was he who personally commanded the construction of its mountain weir project, which shows that he is good at this thing, and if he does what he likes, he will definitely get twice the result with half the effort, so that he will soon agree with part of his own concept.

"Good! Great goodness! I can't imagine that Mr. will not only fight, but also the herdsmen's strategy, which is also a matter of worry after taking office, I wonder if the river embankment that Mr. said is really feasible? "I met Hong Tao, a big fox. It was Wu Qian's bad luck and was tossed by him. I don't know how many poems will be missing in the future, just busy building embankments, where will there be time to write.

"It's not for me, it's for you. If you want to wait for the imperial court to start a cement workshop, I am afraid it will not be something that can be done in a few months. Even if it does, there will not be much cement produced, and it will have to be used to strengthen the city on the front line, and it is estimated that it will not be used by the private sector in a few years. There is no cement, everything is in vain, I have a faster and better way, I wonder if Lord Wu is interested in hearing it? "Flies don't bite seamless eggs, Hong Tao, a big fly, is good at finding cracks, that is, human weakness. Whether it is a good person or a bad person, a clean official or a corrupt official, a Chinese or a foreigner, as long as it is a human being, there are weaknesses. Wu Qian's weakness is that he wants to do things too much, do practical things, this is probably his lifelong pursuit, as long as you want to, that is your weakness.

"Sir, please say......" Wu Qian has lost the necessary vigilance against Hong Tao, he is really not a qualified politician, and he does not put his own interests first.

"There are too many things in the court, and they won't be able to take care of cement for a while, but this thing doesn't need to be controlled by the court like salt and iron wine, and it can be produced by the people themselves. Even if the river embankment is not built, the common people can use it to build houses in their own homes, and the demand is very large, and it is not realistic to rely on the imperial court alone. If you see that this can't be done, find a few local merchants, and I will set up a cement workshop with them. I contribute technology and they contribute funds, and the cement produced is the first to be used by adults for your embankment, and when the embankment is repaired, the cement can be bought and sold at will, how about it? This is Hong Tao's ultimate goal, he wants to lay a maggot in Mingzhou. He had to further infiltrate into the Southern Song Dynasty society, get as many maggots as possible, and corrode the rotten flesh of the highly developed feudal dynasty of the Southern Song Dynasty into a thousand holes, digging up dirty roots to produce new branches.

Why did you choose Mingzhou as the breakthrough? Very simply, since ancient times, businessmen in Jiangsu and Zhejiang have been known for their flexible minds and bold operations, and they have been born with the genes of doing business, and it is easier to talk to them about buying and selling. Moreover, the handicraft industry in Jiangsu and Zhejiang is very developed, which is more developed than Guangzhou and Quanzhou. In addition, the rivers here are dense, the traffic is developed, and the traffic problem must be considered when investing in the construction of cement workshops, otherwise the production cannot be transported, and it is not in vain. If Guangzhou and Quanzhou can affect the whole state and the city, starting from Jiangsu and Zhejiang, the influence will go up the Yangtze River, covering the entire Yangtze River basin, and the radiation area is many times larger.

"This can be done! It's just that a certain person has not been in Mingzhou for a long time, and he is not very familiar with the local merchants, so he has to ask the judge to discuss this matter, I don't know what Mr. thinks? Wu Qian didn't have so many ghost eyes, and after listening to Hong Tao's proposal, he thought about it for a while, and felt that there was nothing wrong with it. Except for the private industries that are expressly prohibited by the imperial court, all other industries can be started on their own, as long as they pay taxes normally, the imperial court will not be able to control it, even if Hong Tao does not tell himself, it can still be done. Now Hong Tao greeted himself first, this is people's benevolence and righteousness, he doesn't want to make more money, he only thinks about Li Min, and he has no reason to refuse at all. Now the more Wu Qian looks at Hong Tao, the more pleasing it is, if it weren't for Hong Tao being a foreigner, he would have the heart to invite Hong Tao to his house to entertain him for a few days.

Wu dived away, walked happily, and walked away with three models of galleons in his arms. It was the packaging box of Zhuye Qingpai perfume, which was a gift from Hong Tao to Wu Qian and his family. Before leaving, the two of them also made an appointment to meet on the boat three days later, and Wu Qian would bring more Mingzhou officials and merchants to hold a special symposium on the issue of cement workshops, so as to implement this matter as soon as possible.

What kind of generals there are, what kind of soldiers! In the same way, what kind of leader there is will be what kind of subordinate. Wu Qian is a doer, and the local officials he brought have also become doers, and even the general judge surnamed Sun has put the supervision matter in the second place, and helped Wu Qian and Hong Tao figure out the matter of the cement workshop. It is very interesting to judge this official position, he is nominally the second-in-command, but he controls the power of the first-in-command. This position represents the central government, and the local officials have a general judgment around them, and without the consent of the general judgment, many government decrees cannot be issued, and the local officials have no jurisdiction over the general judgment, let alone be removed at will.

Sun Tongju is a native of Mingzhou, or from Taiwan, if Wu Qian and Hong Tao want to do something else, he may really make a hindrance from it, the officials of the Great Song Dynasty are all the existence of picking bones in the egg, and there is no one to talk to. But this time Sun Tongju didn't say a word of nonsense, he worked harder than Wu Qian, the reason is very simple, he has suffered from the backflow of sea water since he was a child, and the things that build and benefit his hometown, if he dares to say anything and push back five and six things, without Wu Qian's impeachment, the hometown father can drown him with spittle stars.

To build a cement workshop, you must first find a suitable limestone, first burn the limestone into quicklime, and then according to the formula provided by Hong Tao, several raw materials are fully ground, passed through the basket, and mixed according to a certain proportion, you can get a gray-white powder, that is, cement. This kind of cement is different from the Portland cement of later generations, its corrosion resistance is very high but the strength is slightly lower, generally only about 300, the highest is not more than 400, and the curing period is slightly longer. However, it also has the advantage that it is relatively simple to make, and if the grinding technology can be improved, the strength can be strengthened.

Why didn't Hong Tao get Portland cement in later generations, that is, Portland cement? Because he doesn't know how to play with a vertical kiln, if he wants to burn Portland cement, there must be a vertical kiln, that thing Hong Tao has seen, but he has only seen it, and it is not clear what the interior looks like, how to build it, and how it works. Another point is that it is not as simple as imagined to burn Portland cement, instead of throwing stones into the furnace for a certain period of time, taking it out and grinding it into powder, it is Portland cement. Composition control must be carried out in all aspects of material selection, raw meal, clinker, and grinding, otherwise the burned thing may not be Portland cement. In the absence of chemicals, Hong Tao had no place to find silicate-laden minerals, and could not ensure the stability of the composition of each process, so he had no luxury in Portland cement.

At present, this simple mixed cement he feels is most suitable for the productivity and production technology at this time, quicklime has been understood by the Chinese since the end of the Eastern Han Dynasty, and the lime kiln Dasong itself has it. The second type of raw material is waste bricks, pottery, porcelain fragments, and iron slag, which are not difficult to find, and the quantity is very large, which can be regarded as waste utilization. The third raw material is called cooked gypsum, which is not a new thing in the Great Song Dynasty, there is a gypsum mine, and what is dug out is gypsum dihydrate, and after calcination, it is semi-hydrated gypsum, that is, gypsum. (To be continued.) )