When Master Wu heard Liu Yu's bold conjecture, his face was quite calm, but there was a kind of coldness in this calmness that made Liu Yu feel cold after the gust of yin wind.

"How did the general know that the old man has a book from heaven?" After Mrs. Wuding asked, she seemed to come over suddenly, glanced at Liu Liniang, who was already on the horse not far away, and sighed, "No wonder." ”

Liu Yu said with a smile: "It is said that the daughter who married out of Lu went to spill the water, not to mention that Li Niang is just your old man's apprentice." Should Mrs. Shi answer my question, and is my guess correct? ”

Master Wuding smiled faintly: "If the heavenly opportunity is leaked, the old body is afraid that it will be hit by five thunders, and the general will say yes, just take it." ”

After that, Master Wuding boarded the carriage, which made Liu Yu's face very bad.

Liu Yuxin said that this old nun is really a cunning person, and such a statement concealed the previous change in her face. Whether it was her face that changed when she heard about the Book of Heaven, or whether her face changed when she heard his conjecture, this could only be guessed by himself.

Although Mrs. Wuding had already entered the carriage, Liu Yu still said: "Mrs. Shi, don't regret it, if I take it seriously, then I may not tolerate people who threaten the throne." ”

Master Wu didn't reply, so Liu Yu didn't know what she was thinking in the carriage at this time.

Liu Yu didn't send someone back to the teahouse to take Su Min down directly, as an exchange for Su Min, since Liu Yu had already let him go, he didn't want to go back on his word. What he has to do is to get the formula in hand first, and then try to assassinate Su Min, so that it will be a hundred. In fact, Liu Yu doesn't care too much about what the real son of heaven is, since Master Wuding said that he is a figure outside the number of days, then it explains. History has turned since his arrival. Su Min is now a lost dog. said that she had the emperor's order, but no one believed it.

Thinking of this, Liu Yu also relaxed a little. I got on the horse and walked with the carriage for a while, and suddenly I felt that something was wrong.

Sometimes, it's easy to overlook. It is precisely because Su Min is now down-and-out that she will not be noticed, if there is no Dingshi Tai behind her back, and she really usurps the throne, wouldn't it be a problem to raise a tiger?

Master Wu exchanged himself for Su Min. To put it bluntly, it is to find someone who is familiar with alchemy to tell the formula, and this "alchemy person" is the most suitable for the national teacher Wu You, so Liu Yu's line went directly to the gate of the palace. Liu Yu did not let Master Wuding enter the palace, but sent guards to the palace to spread the word that Wu You came out, so that the pair of "old friends" could meet in the yasho outside the palace.

Wu You hadn't come yet, but Liu Yu had already called a group of craftsmen from the Military Industrial Institute. In the final analysis, Liu Yu is still a little uneasy about Wu You, in case this old god stick gets the formula and says something "forgot", then he will lose more than he gains.

"The general is really careful." Master Wu saw the posture of everyone who came to learn the formula. He laughed with a cynical tone.

"That's natural, Shitai is such a high level of you. If you don't find more people, how can you understand your old man's knowledge? If one or two people come, and these two are still stupid, and they can't learn your old mastery skills, then won't they lose money? ”

Mrs. Wu Ding didn't say anything more, and Liu Yu also made up his mind to get the formula of the water.

Liu Yu didn't leave in a hurry, he felt that it was also useful for him to stay, although he didn't know the formula, but he knew the chemical formula, he could help to refer to the authenticity of the formula, and by the way, he could give these craftsmen some reasonable help.

Liu Yu didn't leave, and Liu Liniang didn't leave. When Mrs. Wu Ding saw the craftsmen of the military industry who were transported by carriage one by one, she was a little surprised, she had long known that the weapon research and development department behind Liu Yu was very powerful, and the invisible weapons that killed people on the battlefield were researched and improved by such a group of people. In the past, she thought that these people should be great Confucians or a group of craftsmen with eyes above the top, and when she saw the real faces of these people, she realized that these people were just some ordinary people who were promoted to the top.

looks ordinary, but the clothes are quite bright, mainly because these people have been treated very well after joining the military industry of the imperial court, and they still have official positions on their bodies, and they will no longer be troubled by yamen at all levels. Even the families of these people were sheltered by the imperial court.

Liu Yu's protection of "scientific and technological talents" has always been very close, and the identities of these people are also highly classified in the military department, because once they are known by foreign enemies and then pry away a few people, the military advantage of the Great Shun Dynasty will no longer exist.

It wasn't until almost dawn that Master Wuding completely explained the recipe and the preparation method. The traditional production method is to use the green alum containing iron substances to calcine to obtain sulfuric acid, which is too cost-effective, costs a huge amount of manpower and material resources, and the sulfuric acid concentration obtained is also very unsatisfactory, and can not meet the needs of industrial iron smelting at all.

The way of not determining the teacher is actually a major reform.

During this period, Liu Yu was also listening, there was a piece of paper in front of him, and he was fiddling with some chemical formulas by himself, but because he hadn't been in contact with it for a long time, he himself was confused, but he was sure that the water used by Master Wu to decompose the dried corpse was concentrated sulfuric acid, because many of the ingredients in the formula involved sulfur and yellow iron. Liu Yu at least knows that nitric acid and hydrochloric acid are not played like this.

Seeing that the sky is already white, Mrs. Wuding can be regarded as having finished teaching the formula, and has the intention of leaving. Liu Yu stepped forward and said with a smile: "Mrs. Shi, thank you so much for your hard work. I have a reluctant request, I wonder if you can stay a few more days and guide the people below to complete the production? ”

Master Wuding said: "The general won't want to go back on his word and force his old body to stay, right?" ”

"Where?" Liu Yu continued to laugh, "I mean, Master Wuding, don't go around Chang'an City these days, I will send someone to take care of your old Hemin County Lord's daily life, you also know that these are just preliminary recipes, the people below me, even if there is a formula, they can't handle some details well, and you need to always guide you." ”

Master Wuding's face fell into a momentary condensation, and then smiled slightly: "Since this is the case, then according to the general's wishes." ”

"Thank you, thank you." Liu Yu seemed to be very polite on the surface, but instead instructed the guards, "Send Mrs. Shi and her old man back to ...... Mrs. Shi, if you don't mind, I will arrange your old residence, so that it will be more convenient to come and go. ”

Master Wuding nodded again, and Liu Yu asked the guards to send her back first, and he himself had to go back to rest first.

Wu You had been listening all night, and at this time he came over in good spirits and asked in surprise, "You kid, what are you going to do?" Learn this in vain...... What is the use of water? ”

"Make it out and give it to you." Liu Yu said angrily, "This matter will be handed over to you for the time being." I'll find another group of craftsmen to come over and ask them to help you, remember not to leak this matter to the public. (To be continued......)