Hao Yizong's father and son left with the drawings drawn by Su Hao, and before Su Hao had time to catch his breath, someone came to visit again, this time, it was the old god Chen Guanyu.

"Master Su, I heard that you met a strongman in the mountains and was injured, and Lao Dao has not been able to take time to visit, and I ask Master for forgiveness." Chen Guanyu said respectfully as soon as he entered the door.

"It's okay, my injuries are healed." Su Hao said, "Lao Chen, you said you couldn't get out, what are you busy with?" ”

Others say that they can't take time to visit, which may be just an excuse, but Chen Guanyu said this, it's different. In terms of identity, Chen Guanyu was employed by Su Hao, and Su Hao was his boss, what else could be more important than the boss's body? Chen Guanyu dared to tell him that he was very busy, and he must have some important achievements to report to him.

Sure enough, hearing Su Hao's question, Chen Guanyu took out a small porcelain jar with a smile, handed it to Su Hao like a treasure, and said: "Master, I have been refining alum oil according to my master's instructions these days, and the first two days were just at a critical time. I thought that this was something that the master had repeatedly told me, and I couldn't give up halfway, so I couldn't help but worry about the master, and only then did I come to explain to the master until the green alum oil was refined. ”

"Alum oil?" Su Hao was pleasantly surprised, if it weren't for Chen Guanyu talking about it, he would have almost forgotten that he had told Chen Guanyu about refining sulfuric acid. He took the porcelain jar, lifted the lid, and a familiar sour smell came to his nose. He took a chopstick and put it into the jar, soaked it in the sulfuric acid, and in just a few seconds, the surface of the chopsticks turned black, which is a characteristic of being charred.

"Yes, yes, Lao Chen has worked hard." Su Hao said with a smile.

Chen Guanyu said: "Master Su, I was just busy refining these alum oils, so I didn't bother to come up to visit the master, the master won't blame me, right?" ”

"Your own family, no need to be polite." Su Hao said disapprerovingly, "You can refine this sulfuric acid for me, which is a great help to me." By the way, don't call this thing alum oil in the future, just call it sulfuric acid. ”

"Sulfuric acid? Well, this thing is indeed refined from sulfur, and it does have a sour smell, and it is appropriate to call it sulfuric acid. Chen Guanyu said in a kind manner, "It's just that there is still something unclear about the old way, and I don't know if Master Su wants to make this green ...... Uh, what do you do with this sulfuric acid? ”

Su Hao pondered for a moment and said: "Sulfuric acid has many uses, Lao Chen, you go back and sort out the steps of refining sulfuric acid, and discuss it with Master Hao to see how large-scale production can be realized." By the way, Lao Chen, I have one thing, a little risky, are you willing to do it? ”

"This ......" Chen Guanyu hesitated, "Master Su, you won't let me do something illegal, right?" ”

Su Hao shook his head and said, "How is this possible, I am also a member of the yamen, how could I let you do something illegal." I want you to do an experiment, this experiment is a little dangerous, you need to be very careful. ”

"I'm very careful in what I do." Chen Guanyu breathed a sigh of relief, as long as he was not allowed to do illegal things, he would not be afraid of anything. As for the risks of experiments, there are many risks encountered by Taoist priests when refining pills, as long as they are careful, it should be fine.

"This thing is like this, what you have refined now is called sulfuric acid. If you put saltpeter into sulfuric acid, you can get a new thing called nitric acid. Then, with sulfuric acid, nitric acid and glycerin, you can get **. When extracting this item, you have to be extremely careful, this object will explode if you shake it slightly, and it will be ......extremely powerful," Su Hao said in a low voice.

"Explosion!" Chen Guanyu was dumbfounded, "Master Su, what do you want to make this thing for?" ”

Su Hao said: "Didn't I tell you? The purpose of my visit to Luoshan is to build a reservoir. To build a reservoir, it is inevitable to open mountains and blow up rocks, how can it be done without a good **? This is a good raw material for manufacturing. ”

Su Hao's words are half-true. It is a fact that the reservoir needs to be repaired, but before, Su Hao did not deliberately think about this problem, he decided to develop **, and the fundamental reason for this is that he was in distress this time. As a traverser, he understands too well the advantages of hot weapons over cold weapons, if when he was in Fuyuan Village, he had a machine gun and two grenades in his hand, what kind of bandits such as Zhenjiaokeng, could he still be his opponent?

Because of this idea, as soon as he returned to the county seat, he found the Hao family father and son and asked them to help make flintlock pistols. Now that he knows that Chen Guanyu has refined sulfuric acid, he naturally thought of the sharp weapon of yellow **.

Nitric acid can be prepared with sulfuric acid; Mix sulfuric acid, nitric acid, and glycerin in a certain proportion to get **; **Then mixed with sawdust, saltpeter, calcium carbonate, you can get a stable yellow color**. This knowledge was already mastered by Su Hao when he was in college. In fact, the preparation of ** is also skillful, as long as the method is appropriate, the risk of explosion can be minimized.

He took a stack of papers, wrote out the whole process in detail, handed it to Chen Guanyu, and told him to ensure that every step could not be wrong, and if it went wrong, the consequences would be unimaginable. Chen Guanyu listened tremblingly, and thought about it several times in his mind, and he understood what he should do.

"However, it is illegal to make gunpowder." Chen Guanyu thought of another important question.

Su Hao said: "I am a hundred households in the army, I asked you to make gunpowder, how can it be considered private?" In this case, you go to my hundred households to find a secluded place to build it, and move your alchemy furnace or something. By the way, stay away from the soldiers' quarters, and don't injure my people by mistake. ”

"Obey the ......" Chen Guanyu was speechless, Su Hao was afraid that he would accidentally injure the soldier when he made the **, wasn't he afraid that he Chen Guanyu himself would be injured by mistake? But now that he has boarded Su Hao's thief ship, it is not easy to come down, so let's ask for more blessings.

"This matter is very important, Lao Chen, I can't find anyone else who is proficient in alchemy, so I can only ask you. How much money will be used to do this experiment, you can withdraw it yourself. After the deed is completed, I will give you a bounty of 100 taels of silver, what do you think? Su Hao began to lure him into taking advantage.

Chen Guanyu pretended to say: "Old man, I do things for Master Su, how dare I mention anything about the bounty." At that time, Master Su felt that Lao Dao had done a hard job, so he just rewarded a few small dollars. ”

"Don't worry, I won't treat you badly." Su Hao said.

Chen Guanyu put away the experimental guide written by Su Hao and swore to leave. Su Hao called two soldiers and asked them to accompany Chen Guanyu to the Baihu Institute and choose a remote corner to set up a laboratory. Su Hao is really worried that Chen Guanyu didn't get it right, and he blew up the **, if there is an explosion in the county, Su Hao really can't afford it.

Not to mention the busyness of Su Hao's side, and said that Fang Mengjin came out of Su Hao's house in a disgraced manner and returned to the county office. As soon as he saw Hangul, he relayed what Su Hao said to Hangul as it was.

When Han Wen heard this, he was furious and said: "This Su Gaizhi, I really don't know how to raise it, my Han's daughter, can't she get married, do you have to give it to him?" ”

"The proprietor is angry." Fang Mengjin persuaded, "In my opinion, this Su Hao also has his troubles, after all, Lu Xiu'er and he have had a marriage contract since childhood, if the marriage contract is annulled now, I am afraid of making people laugh." ”

"This kind of marriage contract for a child bride in the countryside will be nullified if it is annulled. Besides, we didn't let him abandon Lu Xiu'er, we just took Lu Xiu'er as a concubine. If Su Hao can soar in the future, Lu Xiu'er, as his favorite concubine, will also be able to eat and drink. Han Wen said.

Fang Mengjin said: "The proprietor, you are concerned about chaos, this is because you covet the marriage of rich and noble families, abandon the old marriage contract, and according to the law, you will be severely punished." If someone denounces him, not only will Su Gaizhi be punished, but you, the proprietor, will also be implicated. ”

"This ......" Han Wen gasped, he had only thought about marrying Han Qian before, but he hadn't seriously considered Lu Xiu'er's problem. Now listening to Fang Mengjin say this, he also feels that his idea is too simple. Lu Xiuer and Su Hao have a marriage contract in the past, if he forces Su Hao to tear up the marriage contract with Lu Xiuer and marry his daughter, it will be somewhat of a forced marriage. This kind of thing belongs to the people and the officials will not be held accountable, but if it is caught by someone with a heart, it will be a great handle.

"Mr. Fang, in your opinion, how should this matter be handled?" Han Wen asked.

Fang Mengjin said: "So far, I can only hurry up and find a stronger teenager than Su Hao for Miss Qian'er, and let her take her mind away from Su Hao." Lao Yu felt that she might as well tell Miss Qian'er about the gains and losses in this, and let her know that this matter was impossible, so that she would be dead. ”

"I'm just afraid that Qian'er will be obsessed." Han Wen sighed.

Fang Mengjin said: "Qian'er is still young, and some girlish feelings are inevitable. As long as she calms down for a while, she slowly wants to open up. It's just that these days, she must not be allowed to meet Su Hao again. ”

"That's all there is to it." Han Wendao thought that his daughter would definitely be sad for a while, and he couldn't help but hate Su Hao again, and said: "This Su Gaizhi is too, obviously he has a marriage contract, and he wants to provoke my family Qian'er, which is really hateful!" ”

"This ...... Well, it's hateful! Fang Mengjin could only follow Han Wen's words, in fact, in his heart, he felt that Su Hao was really a typical example of being shot while lying down. Obviously, it was Han Qian who ran out to listen to Su Hao's lecture by herself, and followed him to survey wells and surveying and mapping, so she caused such an emotional debt, how could she blame Su Hao's head?

The two of them were talking, when they suddenly heard a commotion outside, and a Xu official rushed in and reported to Han Wen: "Master Zhixian, something happened, and the students of the academy gathered at the gate of the yamen, saying that they wanted to repay the blood debt!" ”

"Blood debt? What a blood debt! Han Wen stood up suddenly.