Liu Yuan's face turned blue and white. Tang Hongying wanted his life while Feng'er was sick. If she hadn't been alive, she wouldn't have been able to hold on: "She is so bullying. I promised not to let you leave the mansion and use your whole life to make the reputation of the eldest son."

"She can even take such a harsh action!"

Qin Feng held his forehead: "My aunt made the wrong order. She first poisoned her first, and then the exchange was made for her son to move the yard so that she would not blow the wind every day, and then the son would learn medicine to save himself."

Liu Yuan smiled awkwardly and said, "My aunt has contacted your uncle and solved the misunderstanding. It turns out that the message was not delivered in place. Both parties gave up on themselves because the other party gave up on themselves. In this way, the aunt can also have a place to go."

This is Qin Feng's purpose. He said immediately: "My aunt gives me a correspondence address, and I will also write a letter to recognize my uncle."

Liu Yuan couldn't get it, so he brought the Liu family's place to Jiangbei. Originally, the business competition in Suicheng was fierce. In addition, the Liu family suffered a lot because the Tang family suffered a lot, so they moved to Jiangbei to work, and instead planned many industries in Jiangbei.

Qin Feng wanted to contact the Liu family, firstly, to give Liu Yuan a place to go, and secondly, when he completely evacuated in the future, he should not leave his relatives or friends to suffer. Although the Liu family has not contacted them for many years, if they really cannot escape unscathed, wouldn’t they have to implicate them?

There were Liu Yuan's relatives who were thicker than water. He could not leave and ignore anything. Therefore, he kept in touch now and was to facilitate his actions in the future. He remembered that there was no Liu family. In fact, it was exaggerated in terms of feelings, mainly for morality.

Qin Feng checked the address and looked at Liu Yuan's uneasy. He knew that what he said had caused an impact on her. He reminded him: "It's good that my aunt knows it. After many years, there was no evidence or physical evidence at the beginning, so it was difficult to settle the score later."

"I can save you this, but since this account is placed here, I have to count it." Liu Yuan seemed to think of something, and the corner of his mouth gently raised: "Who said that this liquidation must be the name of your being given medicine. If not, I will find one."

Now she is in charge of the family and has many opportunities.

Qin Feng gave Liu Yuan a thumbs up in his heart, and it was done. He waited for the show behind him and then he was done.

Liu Yuan has now contacted her parents' home and is in a good mood. Unlike before, she always felt like a rootless duckweed. She has something to rely on. Her mentality is naturally different. Qin Feng saw Liu Yuan, who was much more indifferent.

When Liu Yuan saw Qin Feng, he thought of another thing: "Qi'er came back a few days ago, and this child was surprised. He mentioned Yuan's words in front of me, but when he arrived at his father, he would become a great man in the future."

This must be someone to give me some advice. Lou Mingyue not only teaches him how to do things, but also takes him to do things and knows what to do in front of whom.

The master and apprentice have already returned from the southeast, and Qin Feng's heart has also fallen. Yuan's family leads people to work on the Ku Cliff, so he should take good care of Qin Qi: "Qi'er has super hands-on ability, and if she can really become a master-level figure in the future, there is also a possibility."

The mother and son have not seen each other for a long time, and now they have been chatting endlessly. If I hadn't remembered that there was something important to do, Qin risked to respond to Liu Yuan's request to keep him for dinner. After leaving the Taifu Mansion, Long Qi, who had been waiting for a long time, came out: "The boss, you're ready."

After getting on the carriage, the carriage did not drive to the princess's mansion, but went to his most secret residence where He Lishu was stored. After entering, he went to pick up He Lishu first. When he opened the words on it, he couldn't help but smile and tore it apart.

As the saying goes, man’s calculation is not as good as God’s calculations. No matter how good the plan is, it depends on changes. Who would have expected that the separation will turn into a loss of a wife?

He and Long Qi carried the prepared things into the secret room, and then opened Lu Qi's booklet. The pavilion master had long developed the formula for gunpowder, which was worthy of being a geological person. Not only did it have a counterweight ratio, but it also prepared the chemical properties.

What can be made in this dynasty is black gunpowder, and the main formula is carbon-containing substances such as saltpeter, sulfur and charcoal.

The final combustion aid is completed by the oxidant produced by saltpeter. The most important thing is the combination ratio. Lu Qi didn't know how many times he tried it to determine the final ratio, and the most important saltpeter accounted for 60%.

Looking at the percentage number above, Qin Feng felt emotion. He was also a person who came through. He had found so many minerals, so why did he mess it up? He was grabbed by Zhenbei Hou and was seriously ill.

I want to build a paradise and be dragged down by my disciples who want to gain fame and have to work hard to support my disciples. This is wrong.

Since you have made efforts, you should be rewarded. How can you support those people in vain?

Qin Feng, who has prescriptions and has the foundation for experiments in the past, has very strong hands-on ability, has configured it without any effort, but Long Qi said that this is extremely difficult to get.

There is a group of people in the city who go to find the old city walls, and the soil on the foundation of the old wall can only be refined into nitrogen. The price is not only high, but the quantity is not large.

When Qin Feng heard this, does this mean that mass production is troublesome?

He hurriedly picked up the booklet and looked through it. It really mentioned the origin of the nitrogen. The best method is saltpeter ore. This saltpeter ore is just in the southwest. Qin Feng felt a move in his heart. There was a geological map and it was in the southwest, so the problem was solved.

Saltpeter has been recorded as stone removal in history, and its chemical composition is actually potassium nitrate. Saltpeter in nature is composed of nitrogen-containing organic matter in soil decomposed under the action of bacteria, oxidized into nitric acid and combined with potassium in the soil.

In addition to saltpeter mines, after autumn, it will cover the corners of walls or ground in the shape of a salt flower, which people call ground frost.

The people of Dongyue have nitrogens, and nitrogens are specialists in taking nitrogen. They look for ground frost everywhere and put them in buckets, soak them in water and then filter them, and take filtrate to boil and dry them. What they get is saltpeter.

There was no mine in Sui City, so Long Qi found many smelting people to buy these, and spent a lot of money.

It seems that to stock up on firearms, you need to open a saltpeter mine first. Qin Feng is glad that the saltpeter mine is in the southwest, which saves a lot of trouble. Qin Feng breathed a sigh of relief and signaled Long Qi to try it. Long Qi took the fire and was a little hesitant: "What will happen to this medicine?"

"Explosion." Qin Feng said a word that Long Qi had never heard before. Seeing that he was puzzled, he explained: "You can order it and try it."

Long Qi was a brave man. He really took the fire lead and Qin Feng controlled the amount. After igniting it, he blew up. Long Qi almost couldn't control his mouth and shouted out like a woman. Seeing that the brazier had been blown up, his expression also broke.

"This is the power of gunpowder. This is just an ordinary dosage. If it is increased, it will blow people to death. No matter how powerful the building is, it can collapse." Qin Feng said: "Long Qi, your Pavilion Master has come up with such a good weapon."
Chapter completed!