The Limitations of Divine Sense
Yi Xuan, the designer, was extremely satisfied with the flight capabilities of the Firmament, especially after it underwent a major upgrade following its return from the Artifact Ruins Firmament.
Both speed and attack power have been improved to varying degrees.
In terms of speed alone, the previous Firmament could reach a top speed of Mach 9 and a cruising speed of close to Mach 8, and the current speed is even faster than before.
If this were in my previous life, even the Beautiful Country would kneel down in awe, considering that Yi Xuan's Firmament was capable of carrying people.
The fastest known manned aircraft in the world is the Beautiful Country SR-71 Blackbird reconnaissance aircraft, with a maximum speed of only around Mach 3.3, which is not even in the same league as Yi Xuan's Firmament.
However, as a researcher, Yi Xuan had to admit that what limited the speed of the Beautiful Country manned aircraft was not technology, after all, the largest drones they possessed could reach speeds of nearly Mach 10. What truly limited them was the physical fitness of the pilots, because under the pressure of Mach 10, no matter how excellent a person's physical condition was, they could not withstand it.
An hour later, the Firmament landed back in the middle of Yi Xuan's courtyard. Yi Xuan walked out of the cabin with the quantum communication equipment, then put the Firmament into his Storage Bag and went into his bedroom.
Upon entering, Yi Xuan immediately noticed that someone must have been in her bedroom, as there was an extra item on her desk directly opposite her.
Moreover, this person should be someone Yi Xuan knows; otherwise, No. 01 would have given Yi Xuan a warning the moment he entered Yi Xuan's bedroom.
Don't let Yi Xuan's small bedroom fool you. If someone with ill intentions were to enter, No. 01 would teach them a lesson without Yi Xuan even having to do anything.
"No. 01! Who just came? Was it Junior Sister Mu?"
Yi Xuan remembered that the last time he met Junior Sister Mu was a month ago. At that time, Junior Sister Mu had just taken on a long-distance mission and had to leave the sect for a while. So the two of them agreed that she would definitely come to Yi Xuan's house for a visit after she returned from her mission.
"No, it was Shi Zhenghao who just came! Boss, he's the one who put those things on your table!"
"What else did he say besides this?"
"That's all. But he arrived just as you were leaving on the Firmament. He watched it depart from Firmament doorway and waited a while before coming in!"
Yi Xuan nodded. It seemed that his senior brother, upon seeing the speed of the Firmament, understood who would win between the two.
Sure enough, when he opened the thing wrapped in black cloth on the table, a jade box appeared in front of him, with the word "Master" engraved on the box.
Upon opening it, I found a book lying quietly in the box.
Actually, Yi Xuan was more curious about the Shi Household's array formation manual. After learning about the Shi Household's past, Yi Xuan couldn't understand why the same manual could exert the power to suppress the Southern Frontier in the hands of the Shi Household's ancestors, but was so ordinary in the hands of later generations.
Even now, Shi Zhenghao, the only heir of the Shi Household, disdains to learn the formations on this!
However, Yi Xuan had more important things to do, so he put the jade box into his Storage Bag and entered No. 1 Base with the quantum communication equipment in his arms.
"How's it going? No. 01, how's the situation on your end?"
As soon as Yi Xuan entered No. 1 Base, he couldn't wait to ask.
In fact, when the Firmament approached the Azure Cloud Sect, the Firmament and No. 01 had already established communication.
However, after learning about cultivators' perception of electromagnetic waves, Yi Xuan began to consciously reduce his use of electromagnetic wave communication.
This is especially true when it comes to his own position. Yi Xuan is even now somewhat impatient to replace all communication devices and modules within them with quantum communication.
Unfortunately, you have to eat one bite at a time and walk one step at a time. Sometimes, being too eager for quick success will only lead to taking too big a step and making a mess of things.
Although Yi Xuan tried his best to avoid electromagnetic wave communication, his power was now almost completely covered by this form of communication, so no matter how much he tried to avoid it, it was just self-deception.
Just like now, there are countless different kinds of signal transmissions in No. 1 Base.
To cultivators at the Nascent Soul Realm and above, Yi Xuan's No. 1 Base was like a searchlight, dazzlingly illuminated by electromagnetic signals.
Of course, all of this is based on the premise that there really is a cultivator who is bored and uses his Divine Sense to scan a place 500 meters underground, and that his cultivation level is strong enough.
At least according to Yi Xuan's understanding, cultivators at the Nascent Soul Realm cannot use their Divine Sense to explore a place 500 meters underground.
This is also what the old lady told Yi Xuan before: that the Divine Sense of cultivators is not all-pervasive. The simplest example is Shi Zhenghao from before.
A master who Grain Avoidance Perfection is just one step away from advancing to the Golden Core.
His Divine Sense has a radius of about 30,000 meters, meaning that his Divine Sense can cover an area of 30,000 meters centered on him.
However, exploring upwards and downwards with one's Divine Sense is different from the surroundings.
Although it's unclear whether it's due to the rules or the inherent principles of Divine Sense itself.
However, when a cultivator's Divine Sense explores the sky and the earth, it is indeed weakened to varying degrees, with the sky causing relatively less weakening of the Divine Sense.
Let's take Shi Zhenghao, who Grain Avoidance Perfection, as an example. His Divine Sense can explore a distance of 30,000 meters in all directions. However, if he explores downwards, his Divine Sense will begin to weaken after more than 10 meters. The deeper he goes, the more severe the weakening becomes.
When he reached about thirty meters, his Divine Sense would be unable to descend any further.
Nascent Soul Cultivator like Xiao Anhe are more than twice as strong as cultivators who have reached the Grain Avoidance Perfection; they can explore to a depth of about 80 to 100 meters.
Yi Xuan's No. 1 Base is located 500 meters underground; perhaps only experts at the Tribulation Transcendence Realm could discover it!
The attenuation of Divine Sense in the sky is much less severe; at least within the first thousand meters of the low altitude, there is no attenuation. However, the attenuation level increases with every additional thousand meters.
In any case, according to the old lady, the highest place he could explore was only about 5,000 meters. If he were to use a flying Law Treasure, he could only reach a distance of 10,000 meters at most, and he would be powerless to go any higher.
Over there, No. 01 had finished processing the data from the two quantum communication devices and projected it onto the screen in the main control room of No. 1 Base.
Yi Xuan was carefully examining the data.
The result is that quantum communication is far superior to electromagnetic wave communication in terms of communication speed, communication distance, and signal transmission quality.
Yi Xuan was trembling with excitement, but unfortunately, apart from the cold machines in No. 1 Base, there was no one to share his joy.
Only one Pangu, under the control of No. 01, silently came behind Yi Xuan. Just as it was about to reach out and hug Yi Xuan, it was interrupted by Yi Xuan.
"No. 01, do you think I'd feel good being hugged by a lump of metal?"
"Uh! I thought you would like it!"