Yang Fan's words moved Ma Jun very much and immediately expressed his opinion: "Lord, please don't worry, I will definitely find a solution to make this catapult more convenient! It's more powerful!"

Yang Fan naturally wanted to encourage his subordinates' enthusiasm, but he smiled and said, "No, good, young people are motivated. I like you. However, remember, don't be too hasty in everything, you need to pay attention to your health."

Ma Jun replied excitedly: "Thank you for your concern!"

Then, Yang Fan ordered Guo Jia and Xun You: "Fengxiao, Gongda, you two stayed at the scientific research office to assist Ma Jun in improving the range data of the catapult. It's like, how far you hit, how high you hit, how many people you need to complete. Do you understand what I mean?"

Guo Jia was stunned when he heard this, and quickly took the order and said, "I know what the lord means, Gongda and I will definitely complete the task."

At this point, Yang Fan turned to Zheng Hun and asked, "Master Zheng, what other novel things do you have in your scientific research office? Let me open my eyes?"

Zheng Hun bowed and replied: "The Research Office is divided into six floors above the ground and six floors below the ground. We are ashamed. Only the first to fifth floors above the ground are in use so far, and the other floors are idle."

Guo Jia laughed and said, "Oh? There is another layer we have never been to before. So, we will lead the way quickly. Today's trip will be rewarded with great rewards!"

Zheng Hun looked embarrassed and replied: "Mr. Guo, the fifth floor is the secret in our army's secrets. You need to obtain the permission of your lord to enter!"

Everyone was stunned when they heard this and thought to themselves that this catapult is already a masterpiece of the present. Is there anything more mysterious than this catapult? It is so mysterious that it needs to be approved by Yang Fan before he can enter!

Yang Fan was also stunned by what Zheng Hun said. He grabbed Zheng Hun's arm and asked excitedly: "Can you bet on this? Talents in this field are looking for a fight?"

Zheng Hun hurriedly replied: "Yes...yes, this person is called Wei Ao, and his name is Boyang."

Yang Fan asked suspiciously: "Wei Boyang?"

Jia Xu hurried forward and explained: "Wei Ao, a native of Kuaiji, his father Wei Lang, was appointed as the Minister of the current dynasty. He had an old age with Yang Taiwei. Speaking of which, he also had a lot of relationship with the lord Yang family. When Emperor Ling ascended the throne, Chen Fan and others planned to kill eunuchs, but the matter was leaked and killed. Wei Lang was implicated again and was "urgently summoned to Beijing". He knew that there was a lot of danger, so he committed suicide when he arrived at Niuzhu Mountain in Danyang. From there, Wei Ao devoted himself to the art of elixirs and lived in seclusion in Fengming Mountain in Shangyu. I also learned about Wei Ao's whereabouts from Mr. Yang, and then I sent someone to take the letters from Mr. Yang to Fengming Mountain in Fengming Mountain. After all, my hard work paid off. After more than two years, I finally found Wei Ao and brought him to the scientific research office."

Yang Fan suddenly realized and smiled and said, "How about his elixir technique? Can he do the thing I need?"

As soon as these words were said, everyone present looked at Yang Fan with a strange expression. Isn’t this technique of seeking alchemy and refining medicine just an immortal technique? Unexpectedly, Yang Fan would also care about this matter.

Perhaps after feeling the strange gazes of others, Yang Fan's old face turned red for no reason, and then explained: "You all want to be out of order. I am looking for this elixir not for the purpose of refining elixirs, but for the purpose of studying an extremely powerful battlefield weapon. I can guarantee that as long as this thing is developed, our army's combat power will at least be several times."

"What?"

"What kind of magical thing is it? It can achieve such results?"

"There is this thing in the world? Isn't it a magic pill? But the medicinal materials needed for that thing are extremely precious!"

...........

As soon as these words were said, they guided everyone's thinking elsewhere, and they all guessed what could make the combat power of such an elite Yang family army undergo earth-shaking changes again.

Following Zheng Hun, everyone came to the fifth floor.

Before the door was opened, Yang Fan could smell the strong smell of gunpowder through the door. This smell made Yang Fan fascinated. Yang Fan only understood a little about the formula of gunpowder, but he didn't know the proportion. From the beginning, Yang Fan was looking for a powerful alchemy master to make this gunpowder for himself.

Zhang Jiao, the Yellow Turban Heavenly Master, was born as an alchemist. Perhaps because this person had done some things that heaven was complaining and angry, these alchemists disappeared, or perhaps because they lived in seclusion in those few-people places in order to pursue a higher realm, and for the sake of seeking the way of heaven, they had been suffering for life.

Seeing that everyone was speculating on their own, there was a tendency to become more and more outrageous when they talked, Yang Fan quickly interrupted and said, "You are all great talents, have you ever heard of the book "Taiping Yaoshu"?"

Everyone present, except Jia Xu, was confused. After a long time, Xi Zhong asked weakly: "But is the "Taiping Yaoshu" that Zhang Jiao relies on?"

Zhang Jiao is a famous person of this era. He once rumored to the world that he had obtained a divine book called "Taiping Yaoshu". As a book lover, everyone knew more or less. Guo Jia and others also thought about this statement by Xi Zhong. Xun You smiled bitterly and said, "Why is the lord still happy with this book?"

Yang Fan shook his head slightly and said, "No, this book is voluminous and complex. It is generally based on the law of heaven and the Tao, the principles of yin and yang, and the principles of yin and yang, and the principles of governing the world, ethics, as well as the techniques of longevity and becoming an immortal, curing diseases and health, and divination and verification. It is said that this book is divided into three volumes: heaven, earth, and man. Among them, the chapter of earth has recorded that if saltpeter, sulfur, charcoal and other substances are mixed together to burn according to a certain amount, it can instantly become a potion composed of sparks and flames. And I call this potion 'gunpowder'. Please think about it, if it is successfully produced, what effect will this potion have on the battlefield?"

Seeing that everyone was in deep thought, Yang Fan continued to speak out, slowly seducing, and said, "If the amount of this potion is larger, will it cause an explosion? We can mix some poison powder, iron needles and other objects into it. Can we deal severe damage to the enemy without any effort and achieve obvious results?"

Of course, Yang Fan made up his mistakes, but in order to confuse everyone, Yang Fan had no choice but to bring out the best skills of peace.

'coax!'

At this moment, the sound of flames rising suddenly came from the door. Yang Fan's face changed and he did not dare to delay. He kicked open the door and ran in first.

Dian Wei and Taishi Ci were shocked when they saw this and hurriedly followed closely to protect Yang Fan.

When everyone came to the fifth floor, they saw that it was extremely empty inside. There was nothing else except for some bottles and jars placed on the wooden table in the corner of the wall.

At this time, an old man in his forties or fifties, with a slutty-year-old man in a Taoist robe, staring at the burning flames in the basin in the center. There were three young men beside the old man, who were falling on the ground, looking at the old man with horror. It was obvious that the old man had done something that shocked them just now.

Zheng Hun walked quickly to Yang Fan, pointed to the old man and said, "Lord, he is Wei Boyang, the three of them are his disciples, named Zhou Xie, Feng Liang, and Yu Xun."

When the smoke dissipated and the flames went out, Wei Ao then smashed his mouth with unsatisfactory feelings and sighed: "Oh, it's not successful! It seems that the weight is wrong, and we have to try again."

Feng Liang advised tremblingly: "Master, I think I'll be here today. I almost burned you just now!"

Wei Ao cursed angrily: "What a wonderful potion this is. I have been seeking the truth all my life, isn't it just to find them? Now that it is in front of me, how can you give up easily?"

It can be seen that the four masters and apprentices had not yet noticed that there were people standing behind them. However, they always felt that they were staring at them. Although Wei Ao was obsessed with this, he also noticed that someone had come.

When Wei Ao turned around and looked at him, he saw more than ten people including Yang Fan and others staring at him in amazement. However, the old man didn't care at all. Instead, he pointed at Zheng Hun and cursed: "Boy of the Zheng family, haven't I said that this fifth floor is not allowed to come in without my consent? Why? What do you want to do with so many people today?"

After hearing this, Zheng Hun smiled bitterly and said to himself that Wei Ao was really stupid and stupid. He quickly pointed at Yang Fan and others to introduce him, saying, "Mr. Wei, this is my lord, Yang Fan, and the others are ministers of the current dynasty. The lord is inspecting the scientific research office today."

After hearing Zheng Hun's words, Wei Ao's anger dropped a little. He saw him tilting his head, staring at Yang Fan, and laughing, "Are you Yang Wenxian's son?"

Yang Fan bowed and said, "It's the boy!"

Wei Ao made an elder, carrying his hands on his back, and slowly walked to Yang Fan, but his dirty clothes and his appearance as a scattered beggar face made people laugh. However, Yang Fan knew that this person was capable. He had to suppress the smile in his heart and asked, "I don't know what Mr. Wei was doing just now? How could he make that sound?"

Wei Ao waved his hand and smiled and said, "My house and your family are old. Don't always be Mr. Wei. Mr. Wei's call me, you are called older by you. I am younger than your father. In the future, you can call me Uncle Wei!"

Yang Fan immediately climbed up the pole, grinned and said, "That kid will call Uncle Wei in the future, and ask Uncle Wei to solve the problem for him."

Wei Ao glanced at the extinguished iron basin and sighed: "You boy came one step late and didn't see my husband's masterpiece just now."

Then, seeing Wei Ao with excitement on his face, rubbed his hands, and laughed: "However, I have made two portions of this 'gunpowder' just now, and I will get another portion so that you can see you!"

Yang Fan's mood was no less than Wei Ao. He nodded repeatedly and said, "Okay, okay, that's the best!"

Soon, Wei Ao carefully brought a mud pot from a wooden table and placed it in an iron basin. During this period, he turned around and reminded Yang Fan, "Boy Yang, wait for you to retreat, this 'gunpowder' is very strong, just stop hurting you. The old man Yang Biao will come to settle the score with me again!"

Yang Fan stood with his hands behind his back and smiled heroically: "Uncle Wei is not afraid, so why am I afraid? Uncle Wei, please light the fire! It's easy to observe when you are close!"

After hearing this, Wei Ao laughed and said, "No, not bad, you are quite brave, I like it very much!"

As soon as he saw Wei Ao lit a incense, he walked towards the earthen jar. His three disciples were so scared that they retreated repeatedly, obviously with lingering fear. After seeing this, Guo Jia, Xun You and others also took several steps back for the sake of conservatism. Only Dian Wei and Taishi Ci protected Yang Fan with a serious face, and saw that they were tense all over, as if they were facing a great enemy.

The ancients had always had fear of unknown things. Yang Fan smiled and said, "Don't be nervous, come and you come back and block me!"

At this moment, as the incense in Wei Ao's hand was thrown into the earthen jar, everyone heard a "coaxing!" sound, and then a ball of flame with black smoke rose instantly, and a wave of heat came to their faces. Even Yang Fan was mentally prepared, he was shocked by this scene.

After a long time, Wei Ao turned to look at Yang Fan, and smiled proudly, "How is it? Boy Yang, are you stunned?"
Chapter completed!