"A Yao really said that."

"Um."

Zhuge Heng nodded: "Your Highness may not know yet that this demon king-level demon spirit stone is so precious. Even the strongest Tianji Sect on the continent, we only have 11 demon king-level demon spirit stones. This time, the eldest lady spoke up and asked for 8 in one breath, saying that it was needed for her own cultivation. In fact, she only left one, and the rest were sent to Your Highness."

"A Yao is so considerate..." Lin Muyu couldn't help but smile.

Zhuge Heng also smiled: "Your Highness Yu's words will not be in vain. My subordinates will tell her truthfully. In addition, does Your Highness have anything else to tell me to the lady?"

"How many troops does the Baize Mercenary Group have?"

"Among the 100,000 people, Miss Sikong Yao borrowed twenty ten thousand men from General Zhang Sheng to help train soldiers. At present, the combat power of the Baize mercenary group has a considerable level."

"You can also borrow the general."

"That's right, General Zhang Sheng is Miss Shang Qian's grandfather. Miss Shang Qian personally went to tell me how it would be possible to not borrow it in the future."

"After using these generals, they will be returned immediately, and they will not be kept." Lin Muyu said.

"I know." Zhuge Heng was also an old fox and smiled and said, "As sooner or later, the Bai Ze mercenary will fight with Zhang Sheng's army, so the enemy will naturally not be able to keep them."

"Haha, that's right, come and transport goods, and return to Winter Frost City overnight."

"yes."

...

It was galloping at night and returned to Dongdu Dongshuang City at noon the next day. Lin Muyu didn't sleep, so he personally sent twenty cars of Demon Heart Stone to the Weapons Department to find Qin Ziling.

Qin Ziling felt as if he had found so many demon heart stones, and was so happy that he almost danced: "Your Highness, where did you get so many demon heart stones? It's great... it's great."

"I have a secret channel, so Ziling doesn't need to worry too much. By the way, what are you fiddling with these days."

"Your Highness will come with me and see."

"oh."

Lin Muyu, Wei Qiu, Situ Sen, and Situ Xue looked at each other and smiled, then followed Qin Ziling into the large campus in the backyard of the Weapons Department. There was a jingle sound from afar, and I don’t know what was being cast, but this is the secret base of the Great Qin Empire. Lin Muyu knew very well that the development of the Weapons Department was related to the fate of the entire Great Qin Empire, and that technology would prosper the country.

Not long, the shooting experiment base for the arrow box is conveniently located in front of him. A group of weapons officers are busy filling arrows, and then shooting the rocks in front. In the sound of "Dangdang", arrows sank into the rocks, leaving only feathers outside.

"That is the hardest stone in Lingdong Province, called Jimkoon Stone." Qin Ziling smiled and said, "I have improved the torque device of the arrow box, which greatly enhances the shooting speed. Moreover, these arrows have tempered the magic heart stone and the double elements of the white diamond, and the lethality is doubled. General Sen should also know the principle of shooting."

Situ Sen nodded: "I know a little bit about Long Yu Douxuan."

"That's right."

Qin Ziling said: "Although my cultivation is low, I also know that Long Yu Douxuan is an energy field similar to a whirlwind. The power of Long Yu Douxuan is similar to that of willow branches rotating with an axis, and the speed is very fast, so that relying on the centrifugal force and dragon crystals on the periphery can withstand the bombing of the magic crystal cannon. Even after several bombings in succession, I can ensure that I am safe. So I focus on increasing the shooting speed of the arrow, as long as I can send the arrow into the gap of the Douxuan's airflow."

Lin Muyu pondered silently.

"Your Highness, what do you think?" Qin Ziling said.

"no."

Lin Muyu shook his head: "I have fought with the Dragon Knight many times and know the flow speed of Long Yu Douxuan. Even if you have improved the shooting speed of the arrow box, you still can't keep up with it. The speed limit of the torque device is almost destined to not keep up with Long Yu Douxuan. I can give you an exact number. In the same point in the field of Long Yu Douxuan, at least fifteen Douxuan airflows pass by in one second. An ordinary arrow box may never be able to catch up with such speed in your life."

"Oh my god, so fast..." Qin Ziling was stunned and became a little depressed. After half a month of hard work, Lin Muyu's words became a bubble, and the blow was too big.

On the drawings next to it, the hand-drawn operation principle of Dragon Yu Douxuan was drawn. The dragon and Dragon Knight were vivid. Lin Muyu reversed several drawings in succession and had to be amazed at Qin Ziling's diligence. Unfortunately, the level of development of technology is far from enough. Because of the lack of gunpowder, it lacks the most fundamental driving force. If the arrows can reach the speed of the bullet, it may cause a certain lethality to the god-level dragon knight.

"Gunpowder, gunpowder..." He couldn't help but sigh inwardly. Could it be that God was tormenting himself? But there was no sulfur in the Broken Cauldron Realm and was born unable to develop gunpowder.

"What is gunpowder?" Qin Ziling was stunned.

"Nothing..." Lin Muyu leaned against the table, thought for a while, and said, "Gunpowder is a product of another plane. Once it explodes, it will produce a huge impact on the airflow, which will make the object reach an unexpected speed. If we have gunpowder, we will push the demon heart arrow to shoot and kill it, and we should be able to achieve unexpected effects."

"The push of gunpowder explosion."

Qin Ziling stood there blankly, suddenly slapped his thigh, laughing: "Thank you for your reminder, hahaha, it's great... Thank you for your reminder."

Lin Muyu looked at him in shock: "Zi Ling, why are you doing? It seems like you have won the Mark Six lottery."

Qin Ziling was very excited, his whole body trembled, and he stared at him with a disheveled face, "It was His Highness who reminded me that the airflow generated by the explosion can greatly increase the speed, and perhaps break through the speed limit and destroy Long Yu Douxuan's defense."

"So what."

"Have you forgotten the amazing power generated when the magic crystal cannon exploded? If we cast the cluster of arrows of the magic crystal cannon into the periphery of the magic crystal cannon, and then use the power generated when the magic crystal cannon exploded, we will send the magic heart arrow to destroy the Dragon Yu Douxuan."

"It's really possible." Lin Muyu was shocked.

"Yes, at least we can try."

Qin Ziling burst into laughter excitedly, and Lin Muyu also laughed, as if she had seen the dawn.

On the side, Wei Qiu poured cold water on his face: "Your Highness, Lord Ziling, don't forget how high the temperature generated when the magic crystal cannon exploded. When they fought against the demons, their armored demons were wearing thick armor. A magic crystal cannon was not even a little bit left, let alone the small cluster of arrows of the demon heart arrow."

Lin Muyu was stunned: "It's right..."

Qin Ziling had not calmed down from his excitement, and was covered in sweat and said, "It doesn't matter, we just need to find some substances that can withstand high temperatures to fusion and temper the Demon Heart Stone."

"But how can even the substance that can withstand the high temperature of the magic crystal cannon melt the quenching demon heart stone?" Wei Qiu said.

"ah……"

Qin Ziling was stunned for a moment, then reached out and pointed to the gate of the Weapons: "Duke Wei, go out, you are not welcome here..."

Lin Muyu laughed and patted Qin Ziling on the shoulder: "Don't be anxious, think slowly, there will always be a solution."

"Um."

Qin Ziling nodded and said, "Please rest assured that Ziling will definitely come up with the right way to cast this magic weapon to help my Qin family turn the world around."

"Well, it's up to you, so we won't bother you. Ziling, remember to eat on time, and you've lost weight. Did you use a few demon beauties I gave you as concubines a few days ago?"

"No...not yet..."

...

Late at night, Lin Muyu tempered a demon king-level demon spirit stone again. Since practicing the Elephant Invisible Art, his body is like a dry well and longing for the moisturizing of spiritual power. It is strange that the sea of ​​qi seems to have been widened a lot by the Elephant Invisible Art, and it is not bottom-out. Even the demon king-level demon spirit stone can absorb at least 80% of its strength.

"call……"

With a gentle breath, the demon spirit stone had completely disappeared from his palm, while the turbid breath flew along the mouth and nose in the room. It had just been tempered, which made Lin Muyu feel his blood boiling and rolling, which made him very excited. Could it be that he was about to break through again?

This elephant invisible technique makes him feel as if he is helping him. I am afraid that there are not many people in the three realms to see the speed of breakthrough.

He began to gather the divine power in his body and impacted the Qihai Entrance again and again.

The first thirty levels of waves were very relaxed, and it was not until the thirty-first level that it was a little difficult, but it was still able to control it. In a blink of an eye, the thirty-sixth level of waves had already broken through. He continued to gather all his divine power together without hesitation, and rushed to the entrance of the entrance frantically. With a "puff", the entrance was broken.

Severe pain came from his body, but Lin Muyu still maintained the clarity of the spiritual platform. He had already broken through the thirty-seventh level of cave heaven just now, but he felt that there was still some potential in his body and could continue to be stimulated.

A crazy idea flashed through my mind, breaking through two levels of realms in one fell swoop.

The 38th level of waves surged wildly and began to impact the 38 Cave Heavenly Entrance that had just been established. The bright entrance began to twist under the crazy impact, and the pain brought by nature was not something that ordinary people could tolerate.

Lin Muyu spat out a mouthful of blood with a whimper, and the power in his body flowed out like a river. The power of the God-Binding Lock, the Seven Immortal Gourd, the Dragon Blood Battle Shield quickly penetrated his body, buzzing with light, which was about to go astray.

He was slightly stunned, his brain began to blur. Sure enough, he was not able to practice radically.

At this moment, Lin Muyu began to regret it, but what's the use of regret?

"Red Crystal Dragon."
Chapter completed!