"What does this have to do with my soul crystal cannon?"

Ling Yu still cared about his own design and the desire of the fortress.

"Aren't I afraid that your design will be discovered by the Zhu family? In fact, the vault you're in has already been visited. ”

"What?"

Ling Yun was shocked that the Zhu family's movements were so fast, if they were one step later, they would probably be discovered by the people of the Zhu family.

When the time comes, there will be only one ending, he was killed, and his younger brother was captured.

The best outcome may be to kill both, and the worst outcome is that after the secret of the soul crystal cannon was discovered, the Zhu family mastered this technology, and it was unrivaled in the inner city.

"Ling Yu, the people of the Zhu family have come to the inner city, we must act more urgently and carefully in the future!"

This time, Ling Yu finally compromised, muttering to himself.

"The design of the soul crystal cannon is not perfect, and it is being improved during this time!"

After appeasing the genius boy, Xu Yi began to inquire about the materials for making the soul crystal cannon.

That's why he's here in a hurry.

In order to truly transform the high wall into a fortress, it will take more than one or two soul crystal cannons.

Within the high walls, Xu Fangfang has built thousands of secret rooms, and there is the possibility of expansion in the future, and the materials required are astronomical.

In fact, it was really as he thought, the materials needed for a soul crystal cannon were worth tens of thousands of soul crystals, and many of the materials were not available in the outer cities.

In other words, if they want to complete the dream of the fortress plan, they must rely on the power of the Mu family.

But he is only a third-level ability, where does he have the capital to negotiate with the Mu family.

In the end, Xu Fang had no choice but to set his eyes on Ling Yu's design drawings.

The reason why the major families in the inner city are afraid of the appearance of soul crystal weapons is that they are afraid that ordinary people will be able to master the power of resistance after mastering soul crystal weapons, and eventually destroy their own rule.

But now, the Mu family is bent on overthrowing the Zhu family, and the soul crystal weapon in his hand is the biggest bargaining chip.

Xu Fanggang said what he thought in his heart, but was immediately rejected by Ling Yun.

"These big families are all the same, and handing over the design of the soul crystal cannon to the Mu family is equivalent to wiping out the chance of survival for everyone in the outer city, which is different from our father's wishes."

"Ling Yun, you must know that with our strength alone, it is extremely difficult to complete the fortress plan, and now that the Zhu family is still interfering, it is simply an impossible task."

"If you want to fight against the Zhu family, you must use the power of the Mu family, and now only they are willing to support our high wall plan!"

"But after the Mu family gets the design of the soul crystal cannon, they can completely kill us and enjoy this killing weapon exclusively!"

Under Xu Fang's painstaking persuasion, Ling Yun finally relented.

Of course, Xu Fang would not make wedding dresses for others.

"Of course, I won't hand over the complete design drawings to the Mu family. The purpose of the design is to convince them that we have the ability to make a soul crystal cannon, and as for the key parts, let Ling Yu delete them! ”

"Do you think the other party is a fool? The Mu family is so big and has so many talented people who design soul crystal weapons, even if your design drawings are incomplete, they have the ability to reproduce an identical soul crystal cannon! ”

Xu Fang really didn't think about this, and he could only bow his head in embarrassment.

"I'm confident that the design for the Mu family can't be reproduced, and I'm about to give them a real soul crystal cannon, and they won't be able to copy it!"

Ling Yu, who was supposed to be immersed in the design, suddenly interjected.

"Ling Yu, can you really do it?"

"That's right! Younger brother, once the Mu family masters the design of the soul crystal cannon, it will be difficult for us to realize our father's dream. ”

The skeptical attitude of the two did not dispel Ling Yu's confidence.

"The soul crystal cannon was designed by me, so I naturally know the key to it, as long as we master these key technologies in our own hands, the Mu family will definitely not be able to copy the soul crystal cannon in a short period of time."

"Really!"

For his genius brother, Ling Yun almost blindly believed.

Xu Fang quickly grasped the key point.

"Can't replicate in a short period of time?"

"That's right! As my sister said, there are so many talents in the Mu family, and it is only a matter of time before they want to copy the soul crystal cannon. All I can do is postpone that. ”

Hearing Ling Yu's return, Xu Fang was obviously a little disappointed.

But Ling Yu's next sentence immediately gave him great confidence.

"By the time they can replicate the Soul Crystal Cannon, I've already designed an even more powerful Soul Crystal weapon!"

It was only when it came to the design of soul crystal weapons that Ling Yu would show such a strong self-confidence.

For such a genius boy, Xu Fang could only choose to believe that after all, Ling Yu had completed the soul crystal cannon in just two months.

Besides, he didn't know anything about the design of soul crystal weapons.

After getting Ling Yu's assurance, Ling Yun also agreed to Xu Fang's plan.

This night, Ling Yu was sorting out his design drawings.

Not only to convince the Mu family that this was the design of the soul crystal cannon, but also to hide the key information, this had to make Ling Yu, a genius boy, have to work hard.

It took a whole night for this foolproof design to finally be handed over to Xu Fang.

With this design drawing, Xu Fang appeared in Mu Bing'er's office for the first time.

"Hey, why are you so early? Are you looking for something with me? ”

Mu Bing'er looked at Xu Fang with a serious face, obviously surprised.

"I'm not here for you, I'm here for Sister Twilight."

Although Mu Bing'er was the only one in the office at this time, Xu Fang was sure that Sister Twilight was guarding the eldest lady of the Mu family in some imperceptible corner.

As his eyes are fixed out the window, waiting for Sister Twilight's arrival, a lazy voice rings out from the corner.

On the couch in the corner, Twilight rubs her eyes, apparently waking up from her sleep.

Xu Fang looked embarrassed, his mind was on the design drawings, and he didn't find such an obvious Sister Twilight.

"You're looking for me?"

"Sister Twilight, I want you to bring a message to the head of the Mu family, I want to see him and discuss something with him."

"What? Do you still want to see my father? ”

Mu Bing'er and Twilight were surprised by Xu Fang's request.

"As for you, you are not qualified to see my father now. Besides, if you want to see my father, shouldn't you beg me, how to find Sister Twilight? ”

Regarding Mu Bing'er's doubts, Xu Fang just said lightly.

"The stakes are high, so it's best to trouble Sister Twilight with the news!"

"Bing'er has just said that now you are not qualified to even enter the inner city, let alone meet the head of the Mu family."

Of course, Xu Fang knew that it was impossible to meet the head of the Mu family easily.

"I have the design drawings of the soul crystal cannon in my hand, and I want to make a deal with the head of the Mu family!"

He pulled out the blueprint in his arms and looked at the two of them with a confident expression.

Xu Fang knew that the Mu family couldn't refuse this temptation!