I do research in ancient times

Ning Fei has become a doctor after a long illness, and Ning Fei is almost familiar with heart disease.

He looked old man Liu up and down three times, and repeatedly asked him about the attack, making sure that his angina was not life-threatening for the time being.

"fine!"

Old man Liu patted his chest, which made Ning Fei's heart skip a beat.

"I'm sick, I'll get better after a good night's sleep, and I won't delay anything! I've been doing this for decades, don't I still live well!?"

It's hard to say.

Ning Juzi didn't say a word.

It was good luck that no major incident happened before, but old man Liu is already very old, and all the organs of his body are aging, and carrying it once does not mean that he can carry it every time. The most appropriate way is to take good care of him.

However, under the current conditions of Mo Zong, there is really no medicine for the old man Liu, so he can only make some nitroglycerin for the old man just in case.

Thinking of this, he calmed down instead.

With nitroglycerin, at least it can guarantee that old man Liu will not be in trouble in the near future.

When the system is available, maybe you can exchange some medicines or supplies in the mall.It doesn't matter if the system doesn't work, as long as he can make a fortune quickly, he can still buy some herbal supplements with the money.

It's a pity that he used up all the glycerin when making toothpaste. Later, he will go to the dining room and get some lard before making it again.

Thinking of this, Ning Fei felt a little relaxed.

"Grandpa Liu."

The young Juzi pressed the old man's hand, and the tentacles were slightly cold.

"Recently, you should take a good rest at home. I will find someone else to do the cotton planting. You can't be overworked and don't be overjoyed and sad. You must rest."

"What?!"

Hearing what he said, old man Liu almost jumped out of bed.

"Juzi, I'm fine!"

He was so anxious that tears almost came out.

"I'm really fine, don't listen to Tie Zi's nonsense, I know my own body!"

"Grandpa Liu, don't get excited, just listen to me first."

Ning Fei was also hesitant.

Mr. Liu is obviously not someone who takes care of himself. Even if he told him about the taboos and dangers of angina pectoris, he may not believe it, or his psychological pressure may suddenly increase and he will never recover from it.

But if he didn't say it, then he would definitely not take it seriously, and he would have to shout to farm.

After thinking about it, he decided to tell the truth.

As he was talking, he saw that old man Liu was not in a hurry to get out of bed anymore, as if his energy had been taken away, his whole body was listless, and he rubbed his hands silently on the bed.

Ning Fei couldn't bear to look at it.

Old man Liu was the first person he met after he became a juzi. He was the witness of the whole process from actively seeking death to being refreshed in the elderly group, and he knew very well the significance of growing cotton to old man Liu.

Originally, he handed over this work to the elderly group to stimulate their desire to survive, not to let these old men and women work with farm tools.There are people in Wubao who are responsible for planting. The old man and the lady are technical guides, and a little bit of work to pass the time every day, which is enough.

But old man Liu was found to have angina pectoris, and the situation was quite different.

He is not the person who comforts others, he was silent for a long time before sending a word.

"Then... old man, take a good rest, and I will come to see you tomorrow."

With that said, he left Liu's house in a hurry.

Ning Fei hurried to the dining room.

Before making toothpaste, there were basically leftovers except sewage oil. Now he only needs to go to the kitchen to find some lard, and he should have time to make glycerin.

As for nitric acid, it can be obtained by dry distillation of saltpeter.

Mozong has saltpeter.

The sixth generation of Changshan used saltpeter to start the Tianhuolei (explosive. Explosive. Product) project. There is a saltpeter mine on Niubei Mountain, which can be directly smoldered and cooled to obtain nitric acid.

Of course, the whole process also needs to use sulfuric acid.Thanks to the failed experiments of the sixth generation, the basic materials for the preparation of sulfuric acid are not difficult to find in Niubei Mountain, even in Mozong's tomb.

After the Sixth Generation and the elites of the sect failed to make the sky fire thunder, the three elders took the disciples of the Mo sect to cremate their remains and put them in the cave for worship.

The remaining materials from the development of the Skyfire Thunder were also preserved, and they were placed in the innermost part of the cave.

However, Ningfei doesn't want to use things that have been stored for ten years.

Nitroglycerin is used to save lives, and he must ensure the quality of the finished product, and all expired and deteriorated ones cannot be imported.

I asked Yang Heizi for bile alum, heated the blue bile alum to produce white powder anhydrous copper sulfate, and then increased the heat to produce sulfur trioxide.This process required the support of the blacksmith team, and Liu Tie couldn't get away, so Ning Fei called Xu Jin.

The eldest brother is a reliable person, and when he heard that Juzi was going to burn biscuit, he immediately dug out the mold left by the sixth generation from the warehouse of the blacksmith workshop, set up the shelf and was ready to go to work.

Ten years ago, although he was not the top apprentice in the blacksmith workshop, Chang Juzi would entrust him with some endless work from time to time because he was practical and reliable.

At that time, the research and development of Tianhuo Lei was the top priority of the sect. The blacksmith team made a batch of special molds according to the requirements of Juzi Changshan, mainly for cooking pots and airtight pipes.

Chang Shan picked good quality and brought them into Niubei Mountain.The rest are slightly flawed, but they are used as spares without delaying their use.

After Chang Shan died, no one mentioned Tianhuolei again.These molds are usually not used, so they are piled up in the warehouse of the blacksmith workshop.

This time he would rather burn the guts, Xu Jin immediately remembered these tools.He didn't ask Mo Zi what he was going to use the gallbladder for, but he just quietly took out the spare parts.

Seeing the slightly familiar look, Ning Fei couldn't help raising her eyebrows.

He really didn't expect Mozong to have such modern tools!

This is probably because Yue Wanfeng exchanged the formula of Tianhuo Lei, and the system attached a tool map with the map.

Just in time, it saves him from finding someone to order.

Soon, Ning Fei successfully obtained sulfur trioxide, which was dissolved in water to form sulfuric acid.

The work is not over here, and the next step is the real highlight. It is necessary to mix sulfuric acid, nitric acid, and glycerin in a ratio of 3:3:4, and let the three fully react before getting the life-saving drug nitroglycerin.

But this process is full of danger.

Nitroglycerin is both good medicine and explosives.The Italian chemist who discovered it at the beginning was blown all over his face because of violently stirring the mixture. If the dose is large enough, mixed with silica in an appropriate dose, it can even open mountains and crack rocks.

Ning Fei actually felt that the Sixth Generation Mu Changshan probably died like this.

There are silica mines in Niubei Mountain. Chang Shan pulled a team into the mountain to study Tianhuo Lei, and asked the blacksmith to burn out this set of tools for him. Then what he wanted to do was not black, fire, and medicine, but black, fire, and fire. A more advanced mixed explosive!

Ning Fei has never read the formula of Tianhuolei, but based on the known information, Chang Shan probably already produced nitric acid and sulfuric acid.

However, this reaction seems simple, but accidents will happen if you are not careful.

The sixth generation had no professional training, and most of Yue Wanfeng's secret recipes did not record the key points that need to be paid attention to in the experiment, so it led to tragedy.

But none of these troubled him, Ning Juzi.

He is a professional experimenter, and he has never been afraid of anything more dangerous than this, let alone a nitroglycerin.

After thinking about it, Ning Fei called Xu Jin aside, and told him not to approach this small fire room for a while.

Not only was Xu Jin not allowed to enter, but everyone in Mozong was not allowed to approach, this was the order of the seventh generation of Mozong.

"Juzi..."

Xu Jin hesitated to speak, his face was flushed, but he didn't leave no matter what.

In desperation, he just squatted at the door and didn't speak. Ning Fei really couldn't move him like a lump of iron.

Hurry to make life-saving medicine!Why are you making trouble at this time!

Ning Zhizi was angry, his face was gloomy, and his voice was colder than ever before.

"Why, I can't command you? Otherwise, I will give you the order of the moment, so you can be the moment."

These words were so heartbreaking that Xu Jin knelt down directly to him in fright.

Ke Ningfei was not soft-hearted, he stopped talking, and just stared at the man in front of him coldly, his eyes full of penetrating sword aura.

Finally, Xu Jin couldn't take it anymore.He stuttered for a long time, and finally choked out the truth.

"Juzi! Are you going to be a sky fire thunder!"

Ok?

Ning Fei was taken aback.

He almost immediately thought that if Xu Jin could come up with such a tool, he should have participated in some work of Tian Huo Lei back then.

That's why I was so scared when I saw myself burning bile alum to prepare sulfuric acid and nitric acid.

"Then why don't you go?"

The boy's voice didn't fluctuate.

At this moment, he was standing in front of the window of the small fire room, the midday sun shone through the window lattice, half of his face was hidden in the shadow, and his expression could not be seen clearly.

Xu Jin shivered.

For some reason, he suddenly found that the young man in front of him was very strange.

Obviously, I have seen the grown-up children since childhood, but at this moment, I can't find any familiar feeling.

He had never seen Ning Fei like this before, this kind of condescending coldness reminded him of the gods in the temple.

"I……"

Xu Jin was terrified, but he still held his nerve and stammered his answer.

"I can't go."

"When Changshan Juzi made the Skyfire Thunder, it took many disciples to complete it together. If I leave, Juzi alone won't do it."

Then, he heard the boy ask coldly:

"Aren't you afraid of death?".

"Chang Juzi and so many people are dead, you know I'm going to be Tianhuo Lei, aren't you afraid?"

"I'm afraid!"

Xu Jin wiped his face.

"But since it's Juzi's decision, I'm afraid I'll go too."

"You stay with me, Mouzi. If anything goes wrong, I can protect you!"

Hearing what he said, Ning Fei suddenly laughed.

It was a sincere smile. The boy's smile was like the light outside, which not only shattered the coldness and solemnity, but also brightened up the dark and cramped small fire room.

Xu Jin breathed a sigh of relief.

He felt that Jizi should change his mind and stop touching that dangerous thing.

But what he heard next completely shattered his fantasy.

I only heard the boy say in a brisk and gentle voice:

"Since it's my decision, you're probably going to do it, right?"

"Then I'm ordering you now to get out of my laboratory. For a day, all members of Mozong are not allowed to enter, and a distance of at least 200 steps must be maintained!"

"Get out now! Don't hold me back!"