The night was deep, the moonlight was like water, pouring in from the cracks in the roof, the windows, and the door, there was no light in the house, but under the soft moonlight, a layer of faint white light was shrouded, Gao Yuan sat quietly at the table in front of the window, he was waiting.

I don't know how long it has been, Cao Tianci appeared at the door, looking at the room without lights, he was slightly stunned, walked in lightly, lit the oil lamp on the table, and lit the oil lamp on the table.

"It's all done?"

Cao Tianci nodded: "It's all done."

"That one true?"

"Dead." After a slight pause, Cao Tianci said.

There was a sound in the middle of the table, it was Gao Yuan's hand on the table that unconsciously knocked heavily on the table, and under the light, Cao Tianci saw the muscles on Gao Yuan's face twitch slightly.

"Let's talk about the specifics!" Gao Yuan sighed faintly, "Oh, wait a minute, Wei Yuan!"

He Weiyuan appeared ghostly by the door.

"Go find Qingyuan, there are some professional things, but I'm afraid we don't know much about it." Gao Yuan raised his chin.

"Yes!"

"Say it!" Gao Yuan turned his head to look at Cao Tianci.

"In the past two years, Qingyuan and their Taoist priests do have a heart, and there are many gunpowder formulas and types developed, but there is still a long gap from your requirements of the king, when the king came over today, the Qingyuan was developing a new formula, and when he heard the news that the king came over, Qingyuan handed over some of the ingredients that were being prepared to Yizhen, and asked him to continue to finish it, and he came to pick up the king."

"But Qingyuan himself said that the formula he made was actually used to be true, and it didn't have such great power." Gao Yuan interrupted Cao Tianci's report.

"The problem is here, that Qingyuan has no recorded habits, every time there is a new formula, he is casually writing the proportion of the formula on the operation of the earthen platform, that Yizhen only saw some vague handwriting, many important ratios are completely unclear, that Yizhen according to his own time with Qingyuan to do some memories of the real, made such a new recipe out."

"Looks like what he came up with in a daze is exactly what we need!" Takato felt like vomiting blood.

"After Yizhen dispensed the medicine according to his own formula, he made a little bit on the back of the table according to the previous method of Qingyuan, to see if the power has been improved, according to Yizhen's previous experience, this amount of explosion is slightly more powerful than a firecracker, but there is a thought of what was made this time, beyond his imagination." Cao Tianci said with a wry smile.

"With such great power, why wasn't he killed on the spot?" Took a piece of paper from Cao Tianci's hand, and while looking at the things on it, he asked Cao Tianci curiously, Gao Yuan knew that there were many experienced veterans and torture masters in the Provisional Procuratorate, and they could distinguish many things that ordinary people could not see.

"Speaking of which, I'm afraid this is also a blessing for my big man!" Cao Tianci showed a happy smile on his face, "The power of that little bit of gunpowder explosion knocked out Yizhen in front of him at once, and the table legs behind the table were also blown off, but this table fell on this Yizhen by coincidence, blocking the next powerful explosion for him."

"The explosion of this small amount of gunpowder has exploded this other new medicine that Yizhen has just concocted?" Takato asked.

"Not only these, the things in Qingyuan's room are basically flammable and explosive things, and the one that is true, the most serious is actually burns." Cao Tianci said.

Looking at the paper in his hand, Gao Yuan asked, "This is the final recipe for Yizhen?"

"Yes." Cao Tianci nodded.

"Your Majesty, the Qingyuan Dao Commander is here!" He Weiyuan stood at the door, behind him, standing with his waist bent, he had only been seen for a long time, this Taoist priest seemed to be several years old, which was mainly frightened. The king came to inspect him, but he poked such a big leak here, fortunately the king was not in front of him at the beginning, otherwise if the king had lost a hair, he would have to be chopped into meat sauce.

Standing tremblingly in front of Gao Yuan, by the light of the oil lamp, looking at the paper that Gao Yuan handed him, after only a few glances, Qingyuan almost jumped up: "This, isn't this a new recipe I just came up with?"

"If you look closely, what's the difference with yours?" Gao Yuan reminded.

Qing Yuan froze and looked at it carefully: "This, the amount behind this is completely incorrect, only a few things can be matched, and besides, why are there some things added here?"

"What's more?" Gao Yuan asked.

"Add some of the oils I have extracted from some plants and special stones, and these oils can also burst into flames......" As he spoke, his round mouth suddenly opened into an O-shape, and the whole person froze in place. It was really made according to this recipe, so to speak, this recipe of his is what you need, and according to his recipe, the gunpowder you spoke of already has great power."

Gao Yuan nodded, "That's right, the handwriting you wrote on the table was blurred, and I really couldn't see it clearly, so I figured out that I got such a copy, he never thought that this recipe he estimated at random was extremely powerful, and the thing was made out, but even he was buried."

It is like a basin of cold water poured over the head, "Your Majesty, if you are truly him, he ......"

Gao Yuan nodded, "You guessed right, Yizhen was really injured, just now God came to say that Yizhen returned to the light, and he only had time to repeat this recipe, and then he died."

Qingyuan froze there, Yizhen had followed him for many years, but he didn't expect it, so he left, Qingyuan opened his mouth wide and silently, and tears flowed in his eyes.

Gao Yuan stood up and patted him on the shoulder, "You master and apprentice, go see him for the last time!"

"Yes, Your Majesty!" Qingyuan bowed, turned around, and staggered out.

"God, am I too ruthless, maybe, that one can really save a life!" Gao Yuan looked at Cao Tianci, "Seeing Qingyuan's appearance, I feel a little uncomfortable."

"Your Majesty, this is also something that can't be helped, Ke Yuanshan said that he is only two or three percent sure, I'm afraid it's still for the sake of Kuanwangshang's heart, such a serious injury, there is basically no possibility of survival, we do this, and he will suffer a lot less, more importantly," Cao Tianci paused: "We got this gunpowder formula, on the basis of this formula, I think Qingyuan They will soon be able to develop what we need, with it, on the battlefield, the Han army will be invincible, how many Han athletes will die less!" With a true life that I don't know if I can keep, in exchange for the lives of countless heroic sons and daughters in the future, this business is worth it!"

Gao Yuan didn't nod, nor did he shake his head, he only smiled bitterly in his heart, in the eyes of himself and Tianci, this is indeed a very cost-effective thing, any superior person will not hesitate to make a choice in the face of this situation, but the dead one really doesn't think so, right?

A day later, in the depths of the valley, Qingyuan put the new medicine prepared according to the recipe made by Yizhen in a porcelain altar, and then placed the porcelain altar in a temporary wooden house, a fire rope extended from the wooden house, a little farther away, Gao Yuan stood with his hands in his hands, more than a dozen guards held huge shields, blocking Gao Yuan's body, and even Gao Yuan's head put several shields, only a small slit was exposed on his face, so that Gao Yuan could watch the explosion in the distance.

"Let's go!" Cao Tianci nodded to one of the guards holding the torch.

As the torch lit the arquebus, a line of fire stretched out towards the hut at lightning speed, and the guards who lit the torches threw themselves to the ground, picked up the shield they had placed earlier, and curled up tightly under the shield.

There was a loud bang, and the smoke of gunpowder rose everywhere, and the cabin was divided into countless planks and scattered in all directions. Although they were hundreds of meters away, everyone's ears were still buzzing.

The shield dispersed, and Gao Yuan looked at the cabin that was no longer in Zài, and his eyes flashed with joy.

The guards picked up pieces of wood and put them in front of Gao Yuan, some of them were broken, some of them had broken into small pieces, and on top of those whole boards, large and small pieces of broken porcelain were deeply inserted into the boards.

"It's amazing!" Cao Tianci was speechless.

"The line of fire is too lumpy!" Gao Yuan turned his head to look at Qing Yuan, "This has to think too much, it's best to let them burn more slowly, and the performance of this new type of gunpowder is unstable, it is not conducive to storage, under what conditions it will lose its effectiveness, and a series of follow-up work, you have to continue to study, and when it is ready, I will take a look again, if it can meet the many standards I listed for you before, then it can be finalized."

"Yes, the villain must work hard, and he will never disappoint the king's hope!" Qingyuan's voice was a little choked, "I won't let this thing that Yizhen has his life in exchange for carry forward."

At the mention of Yizhen, Gao Yuan was silent for a moment, then turned back to He Weiyuan and said: "After I go back, the Ministry of Literature and Soldiers, in the future, this place will be called Yizhen Research Institute, specializing in the study of gunpowder and ordnance technology, and the security will be strengthened by one level, and a battalion of young guards will be transferred to the periphery of the Yizhen Research Institute to garrison, and the internal security will be responsible for the Supervision Yuan."

"Understood!"

"Then the Ministry of Literature and Household asked them to allocate money to erect a bronze statue of Yizhen here, if Wang Wuchang is noisy, just say that I said, if he doesn't give money, I will go to demolish his house and sell materials to Yizhen to erect a statue."

"Understood."

"Qingyuan, I told you before, as long as you make what I need, I will not hesitate to wait, this sentence is still valid. But now the gunpowder is still the top secret of my big man, so you, the Hou Master, can only be sealed in secret now, and can only be made public after the gunpowder officially appears on the battlefield."

"Your Majesty, this gunpowder is prepared by Yizhen, please ask the king to posthumously seal Yizhen, I don't want it." Qingyuan shook his head and said.

Gao Yuan glanced at Qingyuan with some surprise, he didn't expect Qingyuan to still have this heart, but he still shook his head, "Yizhen has passed away, and he has no family left behind, it doesn't make sense to seal it or not, and his bronze statue standing here is much better than sealing a waiting master." (To be continued......)