Huh? There's a magic school here.

At this moment, Ke Xiaotian, also known as Bolvar, was also having a frantic brainstorming session, because Bolvar himself had never explored the ruins of the divine kingdom. Mainly, such opportunities were extremely rare; if the continent of Karen were filled with these things, it would have long since descended into chaos. After all, those so-called gods also needed to strengthen themselves, and the most direct and effective way to do so was to devour the divine essence of others and seize their divine authority.

Similarly, weaker gods needed to ensure they weren't discovered or devoured by more powerful ones, making the concealment of their divine kingdoms paramount. While the ancient gods were equally powerful, their divine kingdoms were confined to the plane of Karen due to the limitations of their era. It wasn't until the interplanetary wars began that these gods started relocating their kingdoms to other planes.

This approach has several advantages. First, it's more covert. In this nested-plane model, unless directly exposed, it's extremely difficult for a divine kingdom to be discovered. Second, it's more beneficial for the gods to spread their faith. The continent of Karen is the base of all the gods, and they all compete for believers in this region to gain faith. However, interdimensional warfare is different. As long as the methods are covert, conquering another world makes it easy to unify faith there, since the conquered have no choice.

This only illustrates the difficulty of finding the various divine kingdoms. More importantly, the fall of a god is not so easy, or rather, the probability of a divine kingdom still existing after a god's fall is extremely small. This is because the primary reason for the fall of a god is war between gods. When one god defeats another, they are often completely annihilated, both physically and spiritually.

Destroying an opponent physically is easy to understand and relatively simple; it can be done by being stronger than the opponent or using special methods. The difficulty lies in destroying the opponent spiritually, because as deities, they all have their own sects and followers. As long as these followers continue to provide faith to the deities, they are not truly dead but merely in a state of slumber.

Because these deities can be reborn if the power of faith is strong enough, this is why spiritual destruction is actually more difficult than physical destruction. When one deity launches a war against another, it must be with complete certainty and thorough preparation to achieve a swift and decisive victory, directly sending the opponent to the afterlife.

Without proper preparation, these gods would never wage war against the other side, as it could easily become a protracted war of attrition, from which no one would benefit and the third, fourth, or even the Nth party could easily gain an advantage.

As for why such a divine kingdom has appeared in the edge of the canyon, Bolvar guesses that the god himself had a problem, and the worshippers within the kingdom also perished, leaving behind this divine kingdom. This is also Bolvar's biggest concern right now: what went wrong within the divine kingdom that caused the death of both the god and his followers? Although he doesn't need to risk going in directly, if the problem isn't solved, he'll eventually face the same issue if he wants to enter. The worst part is that his current identity is just that of an ordinary dragon kingdom researcher, and he can't bring this up. Because it doesn't fit his status, Bolvar scratched his head for a long time before finally deciding to let these otherworldly humans go in first to test the waters.

"Professor Wang, Mr. Darris, this is what I'm thinking. To sneak in, we need an access card, or someone with an access card to help us get in. Finding someone to help us in is obviously unrealistic, so we need to focus on the access card itself. What would be a valid access card for this divine kingdom's protective shield?"

"Yes, what could be an access card? Access card, access card, what could possibly be an access card!"

Darius paced back and forth in the tent, pondering the lich's suggestion.

"Or we could just find the access control mechanism. For example, is it facial recognition? Or fingerprint recognition? Or just a password? I personally think facial recognition or fingerprint recognition is definitely impractical. If there are too many believers, how big of a database would it need to store so much information? So it must be a universal password. So as long as we find this universal password, we can come and go freely."

Upon hearing this, Professor Wang suddenly understood, nodded in satisfaction, and began to praise Ke Xiaotian.

"Hmm, young people are so smart! We old folks always think about brute force, it seems we still need to use our brains."

Darius nodded in satisfaction, then spoke to Professor Wang.

"Then I'll go back now and tell everyone about Researcher Ke's idea, and see if anyone has any good ideas. Professor Wang, please help me think of some solutions as well."

"Definitely! We are part of the expedition team, after all, this is our duty."

"Alright, I won't waste any more time. We are very grateful for Researcher Ke's suggestion; he has done a great job! We will reward Researcher Ke handsomely after this expedition is completed."

After saying this, Darius quickly returned to his tent with this thought in mind. Seeing that everyone was still there and just gathered together discussing that everything was alright, Darius relaxed and then came to stand in front of everyone.

"Ahem, everyone, please be quiet for a moment. When I was patrolling the Dragon Kingdom's scientific expedition team earlier, one of their researchers proposed an access control theory. He meant that this protective shield is like a dormitory access control for the Divine Kingdom. If we can't crack the access control by force, we need to find the access card! And this access card is most likely not based on personal information, because that would be too much information and too troublesome. So the access card should be a universal and usable thing for the Divine Kingdom, so as long as we find this thing, we can come and go freely!"

Everyone listened quietly to Darius's description, then began to think. Suddenly, Professor McGonagall seemed to remember something, and covered her mouth as she spoke.

"Isn't this based on the same principle as using Parsley to open Slytherin's Chamber of Secrets?"

“That’s right, Professor McGonagall is right! Our biggest problem now is, what is the Parseltongue that opens this secret room?”

"Could it be the faith of this divine kingdom? After all, only those who believe in this god will have the corresponding power of faith, and this selection mechanism is simple and easy for this divine kingdom to use! Since those who are not one of us will not have the corresponding faith, then those who are not one of us and force their way in are enemies!"