found a reason and finally persuaded Lou Ji.

Due to the gradual tension of the situation, many of the war projects in the Xiangguo Mansion are being studied in close parallel, and among these projects, the research sequence of Emperor Sean's heart is second only to the other two top-secret experiments.

This not only invested a lot of manpower and material resources, but even persuaded a Yuan Chu Keqing, who was close to longevity, to be transplanted as an experimental subject. If the particularity of Xu Yuan's body can reduce a lot of unnecessary expenses, it will be a good thing for the entire Xiangfu.

A group of four, Lou Ji walked in front of the lead with a swaying posture, and between the walks, Xu Yuan slowly walked to Xu Xinyao's side by side with him, while Ran Qingmo hung silently at the back.

Looking at the third brother who suddenly walked to his side, Xu Xinyao glanced back at the girl in ink behind her, and asked with a little surprise:

"Third brother, do you have something to look for me?"

Xu Yuan nodded, looked at the fourth sister beside him, and asked in a low voice:

"After all this time, how is the research on the Soul Ring progressing?"

There are actually quite a lot of things he has to do when he goes down to this black prison today, seeing Nameless, taking the soul shelter clothes, looking at the heart, and asking about the scientific research progress of the soul ring of the four sisters.

Although Xu Xinyao has said before that this project will not see any return in the short term, as the investor of Party A, he has the right to know all the scientific research progress of Party B.

Xu Xinyao's eyes flashed, and she replied in a low voice:

"It's okay, third brother, why did you suddenly ask this?"

The experience of being Party A in the past and present lives made Xu Yuan realize that most of this girl had made no progress the moment he heard this answer.

Ambiguity = money in vain.

This kind of scientific research project, even if there is a little bit of progress, Party B is eager to directly paste the project results on the door of the brain for Party A to see.

The thought flashed, Xu Yuan stared at Xu Xinyao and did not speak.

After looking at each other for a moment, Xu Xinyao looked away with some weakness and explained in a low voice:

"Third brother.. Xin Yao has been very busy recently, you see that the corpse of the saint I have to help, I also have to help with the repair of the black prison, and even the master sometimes asks me to go to the Gewu Yuan to help, so. So."

"So how much silver is used up now?" Xu Yuan asked quietly.

"About 300,000." Xu Xinyao's eyes did not hesitate at all, but she raised her left hand and pinched the arm of her right hand.

Gotta lie at a glance.

From childhood to adulthood, this girl will have this kind of similar small action when she lies.

If it is next to the tea table, the four sisters will pour water and drink vigorously when they lie, and in the carriage, they will use their fingers to pull the animal skin and plush on the soft couch.

Xu Yuan snorted lightly and said:

"Research materials and personnel allocation, I only need to ask Hua Hong and Jiang He to know!"

A little weak-hearted, Xu Xinyao whispered:

"Five and a half million taels."

"Tell the truth!"

"It's just a little over a million taels."

"In the early millions?"

Xu Yuan glanced at Xu Xinyao: "How many tens of thousands?" ”

Xu Xinyao looked down at the flat stone road and whispered:

"Ninety-Three"

“.” Xu Yuan.

Damn it.

One million nine hundred and thirty thousand taels, this is still the price of the Prime Minister's internal purchase, if it is placed in the outside world, the cost of silver has broken two and a half million, converted into the currency of the previous life, it is more than four billion, and more than four billion were burned in more than a month

Looking at Xu Yuan's cheeks, which had gradually darkened, Xu Xinyao explained in a low voice, but very quickly:

"These silver are the initial investment, and the engraving of the Lin Cage Law Pattern requires the "Engraved Dust Realm", but the general "Carved Dust Realm" over there of the Gewu Academy cannot meet the research needs of the soul ring, and it needs to be customized by the Heavenly Craftsmanship Division of the Imperial Family, which is very expensive, and it is also necessary to purchase the spiritual materials of the Law Pattern."

"Don't talk about this here, I don't understand."

Xu Yuan directly interrupted the spell casting, and simply asked directly:

"The money is spent, and what is the result?"

“.”

Xu Xinyao lowered her head and stopped talking.

Lou Ji, who was walking in the forefront, heard the words behind her, and she also turned her eyes back, and glanced at the brother and sister with a hint of amusement.

But this time, this bad woman didn't fall into the hole for Xu Xinyao, but helped explain softly:

"Changtian, this matter is actually not to blame Xin Yao, you have to make this soul ring, there was no similar research project in our Xiangfu in the past, the only thing that can help her is the demon array, the process of a new thing from zero to one is really difficult, two million taels of silver is actually very little."

When Xu Xinyao heard this, she immediately raised her head and glanced at Lou Ji very gratefully, and then looked at Xu Yuan, the "father of Party A", pitifully.

Looking at the thin slender body of the girl in front of him under the light blue robe, the look in Xu Yuan's eyes was angry and funny, and he asked softly:

"But I remember that when you told me about it earlier, it only cost about two million taels at the beginning."

Xu Xinyao said righteously about this, and her voice was soft:

"The silver salary is sufficient, of course, you must use the best, so that the third brother, you can see the finished product earlier."

Draw a pie.

This little four also learned badly.

"If you're using the best stuff, why hasn't there been any progress at all?" Xu Yuanxing asked for guilt.

Xu Xinyao shrunk her neck:

"This. This is because of the lack of materials, many of the materials in the list of materials for refining the soul ring given by Senior Luo are extinct, and everything else is easy to say, but the main material Blood Refining Crystal Replacement Material has never been found."

“.”

Xu Yuan found out.

Once it comes to her own research, this originally well-behaved and gentle fourth sister can also run a beast cart in her mouth.

Taking two deep breaths, Xu Yuan frowned:

"Is there no replacement at all, or can't you find it?"

"Yes!"

Xu Xinyao's voice raised slightly.

And Lou Ji answered with a smile at this time:

"Changtian, you don't have to doubt Xin Yao about this, the Dragon Spirit Stone does have it, but it's really a bit hard to find."

"Why?"

"Because the replacement of the dragon spirit stone is going to Gu Yuan to slaughter a dragon clan."

“.” Xu Yuan.

Lou Ji's voice was slow and leisurely, flirtatious and charming:

"A treasure called the Dragon Essence will be born in the body of the Dragon Clan, just like the snake heart lotus of the seven-born python that Xu Changge brought back before, the Dragon Essence is a thing that stores the dragon clan's divine sense, which can replace the blood refining crystal."

Xu Yuan's eyes flickered when he heard this, and he didn't answer immediately.

Xu Xinyao whispered a little worriedly:

"Third brother, in fact, you don't have to be too anxious, I don't have a dragon essence, I can also refine the materials to replace it, it just takes some time."

Xu Yuan waved his hand to indicate that he knew, and then asked with a little seriousness:

"I remember that the dragon essence is not very large, if it is used as the main material, can it really be mass-produced?"

Xu Yuan didn't know anything about refining weapons and the way of formations, but if he needed to turn into a dragon essence, he could help a little.

The ultimate goal of developing a soul ring that can accommodate the Yin Ghost Yin Source is to achieve mass production, so as to set off an "energy revolution" that is different from the source crystal, but if the soul ring is refined with dragon essence as the main material, how can mass production be achieved?

The Dragon Clan is the emperor of the Ancient Abyss Demon Clan, how could he let Ling slaughter at will to make refining materials?

Of course, Xu Xinyao understood Xu Yuan's worries, and explained softly:

"Third brother, you will be mistaken, to be precise, the dragon essence is not the replacement of the main material, but the blind main material medicine for refining the replacement material, only one dragon essence, Xin Yao can refine a replacement material weighing about two stones.

"And with this batch of replacement materials, the research of the soul ring can be carried out, as for this batch of materials after they are used up."

Speaking of this, Xu Xinyao smiled slightly:

"By that time, the master's Gewu Academy should have been able to remove the dragon essence from the main material for refining the replacement materials through debugging."

Got it.

The dragon essence is the transition material that allows the soul ring research to continue, with it, while Xu Xinyao is researching the soul ring, the Gewu Academy will also deconstruct the dragon essence at the same time and find out the replacement material.

Thinking in his heart, Xu Yuan silently calculated in his heart.

He plans to get a dragon spirit through the information in "Cangyuan".

According to the direction of the timeline, the little female dragon in Gu Yuan should be in the territory of Dayan now, but Xu Yuan didn't have the idea of beating her.

It's not that I'm reluctant, the paper man's wife in "Cangyuan" has died so much, and it's not the little female dragon that is missing, mainly because it's hard to find.

In "Cangyuan", as long as you remember the time and place, and pass on time, you can find this little female dragon, but now the world line has long been completely collapsed because of his arrival, and it is impossible to find her according to the information of the previous life.

In addition to this little female dragon, Xu Yuan knew that there was a dragon spirit in one place.

A small male dragon that has been dead for a hundred years.

The playful younger brother of the little female dragon secretly ran from the ancient abyss to Dayan hundreds of years ago, and then accidentally exposed his demonic energy, and was finally seriously injured by the siege, and then died in the territory of Dayan.

"Long days."

The heavenly treasures of his body have decayed due to the passage of time, but the dragon essence in his body is still there.

"Long heaven."

In "Cangyuan", this dragon essence is the key to open the dragon knight's route, but now it can be used to solve urgent needs.

"Long heaven!"

Lou Ji's slightly raised voice interrupted Xu Yuan's thinking.

Raise your eyes and look at each other.

Lou Ji's beautiful eyes were bent into two narrow crescents, staring at him with a smile:

"You seem to have a clue to the dragon spirit?"

No wonder you have been single for so many years, no matter how flat you are, who can stand being so keen?

Complaining in his heart, Xu Yuan smiled and asked:

"Why do you ask?"

Lou Ji shrugged her shoulders lightly and said with a smile:

"Forget it if you don't, but don't suddenly pick up a dragon spirit on the road after a long day?"

Xu Yuan rolled his eyes and said softly:

"Yes, yes, but I have to discuss it with Ran Qingmo."

"Ran Qingmo?" Lou Jidai raised her eyebrows slightly.

Stepping forward slowly, Xu Yuan reached out and patted Lou Ji's soft shoulder, and laughed softly:

"Sister, Ran Qingmo told me before that she heard some rumors when she was traveling, so I had to ask her for her opinion first."

“.”

Lou Ji frowned when she heard this, and her eyes immediately swept to Ran Qingmo, who was hanging behind the four people, and her sharp eyes seemed to be able to see through people.

Hearing Xu Yuan talk about himself, Da Bingtuozi immediately raised his eyes, looked at Xu Yuan, and then looked at Lou Ji, blinked twice, his eyes were quiet, and there was no change in the slightest.

“.？” Ran Qingmo.

Rebound.

“.” Lou Ji.

Anyway, Da Bingtuozi won't defend himself, and the pot is thrown on her head, which is better than Old Man Luo.

With a smile in his heart, Xu Yuan looked at Xu Xinyao on the side, and said slowly:

"How precious the dragon essence is, Xin Yao, you should know, although your sister Qingmo won't care too much about these things, but for my brother, I have to give her some compensation, and I will take half of your remaining six million taels first."

“.” Xu Xinyao.

The Black Prison is like a labyrinth, with intertwined corridors in all directions, and as we continue to penetrate into the Black Prison, some low rumbling sounds continue to come from the end of the darkness.

That night, Feng Jiuxuan's battle with Emperor Sean caused great damage to the Black Prison.

It's easy to destroy, but it's hard to rebuild.

Although the hole cut out above has been filled, the various mechanisms and formations inside the black prison are still being repaired.

However, these sabotages all happened on the side of the prefecture-level prison, and although the dispensing room where Lou Ji was experimenting in the black prison was not counted from Xu Xinyao's grid, it was also within the range of the heaven-level prison.

The footsteps of the four echoed in the corridor.

After learning that his scientific research funds had flown away from three million, Xu Xinyao kept her head down sullenly and followed behind Lou Ji's ass silently.

And after achieving the goal, Xu Yuan didn't pay attention to Xiao Si's tempered little temperament, and returned to Da Bingtuozi's side by himself, holding her white and cold little hand, feeling the ignorance that was a little too green.

Ran Qingmo didn't say anything, didn't ask anything, just let the man next to him lead him, just like Xu Yuan thought.

Xu Yuan likes this feeling.

This kind of gradual relationship that starts from holding hands probably dates back to when he was in junior high school in his previous life.

All the way, all the way silent.

After briefly reminiscing about his youth, Xu Yuan began to calculate the military expenses of Xiaobai's clansmen again.

Three million taels of silver seems like a lot, but if you look at the armament ration of the Black Scale Army, it can only arm half a battalion (2,500 people) at most.

Because Da Yan's standard armor is really expensive.

However, he can talk to Hua Hong about this matter, after all, he is now wearing the identity of the prince of the Prime Minister's Mansion, not to mention taking the goods from him at cost price, at least he must get the lowest domestic purchase price.

Thinking about complicated things, a group of four people came to Lou Ji's dispensing room.

As the territory directly under the jurisdiction of Lou Ji, the scale of the medicine room she built for herself was much larger than Xu Xinyao's lattice room, and dozens of wooden shelves were marked with the names of thousands of forms of medicinal herbs, almost including all the medicinal herbs in the territory of Dayan.

As he entered, Xu Yuan's eyes immediately locked on a righteous sister who he hadn't seen for a long time, and a white and black intersecting skirt set off her gentle temperament.

Luo Xiran is really here.

As a pharmacological genius who once developed the anti-life liquid, a reversible demonic artifact, she was naturally quite interested in Emperor Sean's heart.

However, what surprised Xu Yuan was that there was still a shadow standing next to Luo Xiran.

Bai Muxi is actually here.

(End of chapter)