The speed of cruise missiles within the atmosphere depends on the engine.
That is, the scramjet engine.
What are the technical challenges of this engine technology?
Fuel, design, materials, thermal balance, injectors!
Hypersonic missiles need to overcome all these problems.
And these technologies...
Fuel, acquired from the Co-spirit.
Materials, Wujin is enough.
The remaining design and flame injection aspects will depend on the blueprints given by them.
As for thermal balance...
He would arrange it himself.
But he believed, with True Spirit Possession, when he and the missile merged into one, getting a handle on this would not be a difficult task.
Soon, Gu Jinlai had received materials from the person in charge of the external civilization exchange command center on Blue Star.
It concerned whether he could deter the Divinity Transformation Cultivator, so Gu Jinlai quickly began to look over the materials with serious concern.
"Well, I just want to build a missile, and you’re telling me to use nuclear explosions to generate power to propel missiles for hypersonic flight? I can create nuclear explosions with my hands, what do I need your missile for?"
He felt like he couldn’t keep up with their train of thought.
Besides, the theory of using the shock wave from nuclear explosions as propulsion for an engine...
He had indeed heard of it, just that this technology was for use in spacecraft, wasn’t it?
To release nuclear propulsion in space thereby granting a spacecraft incredible velocity.
Gu Jinlai looked at the material with concern.
Was his explanation not clear enough?
Did they think that, as an alien, I should use this type of engine to repair a cosmic spacecraft?
Gu Jinlai had no choice but to send another message, "This technology has significant security risks and has been abandoned by us, and I do not have enough material to produce enough nuclear bombs for propulsion. Therefore, please provide me with the complete ’Sky Arrow’ related materials."
However, having sent the message, Gu Jinlai didn’t receive a response even after several hours.
After a moment, he calmed down.
It’s not strange to be suspicious. An alien precisely asking for ’Sky Arrow’ related materials might seem a bit...
Too eager for quick success.
If only he had asked for all the missile data from Blue Star, such a vague request could have both concealed his purpose well and allowed Blue Star room to maneuver.
If he had asked for all the missiles, it would be like draining a pond to catch all the fish. Even if the missile data obtained in the end might not be satisfactory, he could still gain something.
Now, he could only wait.
"Once they verify the specific performance of the Wujin material I provided, this metal that is an era ahead of Blue Star, they won’t be afraid to come to me for further trade," Gu Jinlai said.
With that, he left the observatory.
Outside, Gu Junxiu waited with a solemn expression.
"Keep listening, and contact me the moment they send information."
Gu Jinlai instructed.
"Also, how’s the mold I ordered coming along?"
"The Xuan Nu Fighting Machine, due to its large size, has not yet been completed. However, the second large radar has been cast as per your request, and we have moved it to the cave."
This large radar was an instrument Gu Jinlai planned to use to forcibly co-spirit after the Demon Realm Rift opened.
Once the co-spirit was complete, based on its power...
It was estimated that it could scan for Divine Thought Fluctuations within a hundred, or even two hundred kilometers radius.
With this radar, from now on, the moment anyone approached Lingxiao City, he would be the first to notice.
This way, he could effectively prevent himself from being assassinated by a flying sword from a Divinity Transformation Cultivator.
Would have to wait until the Demon Realm Rift opened.
Thinking of this, he glanced towards the cave, "Report any activity inside to me immediately."
Gu Junxiu responded earnestly.
Gu Jinlai left Qiushan Mountain and returned to Lingxiao City.
He didn’t return to his mansion but went to the Military Workshop instead.
Zong Heng, Qiu Shuiyue, and Zhou Mingshi, who lived in a courtyard next to the Military Workshop, stopped all their activities and greeted him with cupped fists the moment they learned of Gu Jinlai’s visit.
"Heavenly Monarch Gu."
"The three of you need not be overly formal."
Gu Jinlai waved his hand and greeted, "How goes your practice with the Great Sun Demon God Body Refining Method?"
"This Body Refining Method is exquisitely peerless. Thanks to it, all three of us are seeing our Essence growing stronger by the day. In at most a fortnight, we will have completed the refining of the organs and the blood exchange, afterwards to refine essence into energy."
Zong Heng said, once again bowing deeply, "We thank the Heavenly Monarch for entrusting us with such a magical technique."
"As long as it’s effective. I happen to be free today, so I will cleanse the demonic nature from inside your bodies once more."
No sooner had Gu Jinlai finished speaking than he began the Visualization Great Sun.
In an instant, a blazing, brilliant radiance swept across in all directions.
Even though the three Heavenly Masters had witnessed the marvel of the Great Sun more than once, they were still utterly astonished by the intense, pure power it contained.
"In the cultivation of the Grand Sun Nine Refinement Visualization Method, the Heavenly Monarch has indeed become unsurpassed throughout history. Even the founder of this legacy would feel inferior in comparison to the Heavenly Monarch," Zong Heng praised.
Gu Jinlai replied, then moved on to the main topic, "The three Heavenly Masters have been immersed in this path for many years and carry your inheritances; with your extensive connections, you must know of the existence of the Demon Realm Rift?"
Zong Heng nodded, "The Demon Realm Rift is the source of Demon Spirits and Devils, as well as the root of chaos in the world."
As he spoke, he asked, "Does the Heavenly Monarch want to inquire about how the Demon Realm Rift was formed? According to the investigations of our ancestors over numerous years, the cause of its formation...is related to space-time...and even originates from the pursuit and overlap of two worlds regarding space-time."
Gu Jinlai thought of his previous conjecture and was intrigued, "Elaborate on that."
Zong Heng organized his thoughts and spoke slowly about the Heavenly Masters’ research into the Demon Realm and the Demon Realm Rift over the past ten thousand years.
And this research bore a striking resemblance to the theory Gu Jinlai had seen on Blue Star.
Overlap in space-time.
Two worlds existing in the same space but different points in time due to some fortuitous coincidence overlap with each other.
Once the overlap occurs, a variety of phenomena will arise.
Such as informational projection.
This projection could be dreams, thoughts, or simply biological electromagnetic waves.
For ordinary people, they would not pay any attention.
But the Heavenly Masters all possess a heart that seeks the truth in all things.
Therefore, by investigating dreams, hallucinations, and some inexplicable thoughts in their minds that don’t match normal circumstances, they ultimately...
...discovered the existence of the Demon Realm.
When they became aware of the Demon Realm, it also became aware of them.
Like the observable and unobservable states of particles.
When unobservable, there is no intersecting between the two, instead, they drift further apart.
The connection between the two worlds suddenly becomes close.
The Heavenly Masters, through constant research on this state, even invented the "Star Gate" technology.
This technology can use the Demon Realm as a transfer station for cross-space transmission.
With the help of the Star Gate, the Heavenly Masters can travel tens of thousands of miles in one second and return home in the next.
That was the most prosperous and brilliant era of the Heavenly Master Civilization.
"To build a Star Gate in the Demon Realm Rift, using the Demon Realm as the transfer station to traverse vast distances."
Gu Jinlai took a deep breath.
The dominance of the Heavenly Master Civilization during that time could be foreseen.
"However, as the number of Heavenly Master schools increased, and internal conflicts arose among our human clan, coupled with the increasing number of Demon Realm Rifts over the years, by the time the Heavenly Masters reacted and put an end to the disputes, it was no longer possible to completely seal off all the Demon Realm Rifts, and in the past hundred years, even more so..."
As Zong Heng said this, he sighed profoundly.
"So you’re saying there are many Demon Realm Rifts?"
"Many, but most of these rifts are ephemeral, often opening only once. These rifts appear frequently and their locations are unpredictable, which greatly hinders the sealing efforts. On the contrary, those occasionally and regularly opening Demon Realm Rifts are not too dangerous if someone keeps watch over them."
Zong Heng continued, pausing for a moment, "It was only in the past, strictly speaking. The danger of these rifts is greater because the unpredictable ones are small and it’s difficult for large Demon Spirits to traverse from the other side. However, the occasionally and regularly opening Demon Realm Rifts tend to expand over time until they are large enough to accommodate large Demon Spirits, even Catastrophic-level Demon Spirits..."
"Inside Mu State, it was because of a continuously opening Demon Realm Rift that grew unchecked without timely sealing by the Heavenly Masters, leading to the downfall of all four major states in the southeast, northwest, northeast, and southwest."
"How many such regularly opening Demon Realm Rifts are there within the country? What’s the scale?"
"There are six that are known to exist."
Qiu Shuiyue said, "One in Tianhe, one in Mu State, and among the other four, one is in Sun State, two are in Central State, and there is one in the Imperial Capital. As for size, the rift in the Imperial Capital is the largest and can accommodate the crossing of Catastrophic-level Demon Spirits. The two in Central State are slightly smaller, but they are also large enough to accommodate the crossing of large Demon Spirits. The remaining three are on the same scale."
After finishing, she added, "These are what we can confirm. If we include the Demon Realm Rifts that are hidden, the total number is definitely more than ten."
Large enough to allow large Demon Spirits to come and go.
Large Demon Spirits often require several Great Heavenly Masters, or even a Heavenly Monarch using Soul Secret Techniques, to kill.
And now, the number of Heavenly Masters is exceedingly low...
"Apart from the ones in the Imperial Capital and Central State, these Demon Realm Rifts are basically unguarded, allowing the Demon Spirits that surge out to quickly integrate with Fierce Beasts. The larger the Demon Spirits, the faster their growth, and in a year at most, they can transform a Fierce Beast into an Upper-level Demon, and if they devour a large number of the Human Clan, they can even evolve with demonic nature to become Demon Kings that bring disaster to an entire state. This is also the reason for the recent increase in reports of Demon rampages," Zong Lian joined in with a sigh.
Gu Jinlai intended to search for more Demon Realm Rifts to see if he could speed up the efficiency of Co-spirit by refining Demon Spirits, creating powerful weapons.
But with the current situation...
Clearly, it wouldn’t work.
Both Tianhe and Mu State have witnessed the appearance of Demon Kings.
For him to take control of any one of these rifts would be an impossible task in the short term.
He cooperated with Daqian.
As the actions of the Daqian Royal Family suggest, they are still very hopeful of sealing the Demon Realm Rift and solving the issue of Demon unrest at its source.