Being at Hogwarts, something's not right with this system.

The spiritual energy equivalent to 5.4 million low-grade spirit stones, plus the 30% amplification effect of the Spirit Gathering Array, is equivalent to 7.02 million low-grade spirit stones. At this moment, it turned into a dense fog of spiritual energy that was so thick that you couldn't see your hand in front of your face, completely filling the entire House of Response.

Lin Yu and Hermione sat facing each other, their eyes closed, focusing all their energy on their cultivation techniques.

The Devouring Heaven Divine Art truly lives up to its reputation as a supreme Dao technique. When fully activated, it absorbs the surrounding spiritual energy like a whale swallowing its prey.

Moreover, they are already exceptionally talented, so there is no need to worry about their foundation being unstable.

Improving one's cultivation level is as natural as drinking water.

Within their dantian, foundation stones were laid out one by one.

Finally, as their auras changed simultaneously, they both advanced to the second level of the Foundation Establishment stage.

However, they soon discovered that as their spiritual energy requirements increased, each of them needed a total of 2,048,000 low-grade spirit stones to reach the first level of the Foundation Establishment stage.

Therefore, there is now less than three million low-grade spirit stones of spiritual energy left in the room.

Not even one person is enough for a promotion.

Lin Yu did some calculations in his mind and came to a conclusion.

They advanced from the first level of the Foundation Establishment stage to the second level of the Foundation Establishment stage, each requiring 2,048,000 low-grade spirit stones.

To advance from the second level of the Foundation Establishment stage to the third level, one needs 8,192,000 low-grade spirit stones.

The two of them together have a combined value of over 16 million low-grade spirit stones.

Without hesitation, Lin Yu released all 100,000 high-grade spirit stones from his Qiankun Ring.

One high-grade spirit stone is equal to one hundred mid-grade spirit stones, or one thousand low-grade spirit stones.

One hundred thousand high-grade spirit stones are equivalent to one hundred million low-grade spirit stones.

In addition, the amplification effect of the Spirit Gathering Array is equivalent to the spiritual energy of 130 million low-grade spirit stones.

The spiritual energy in the room was almost tangible.

Lin Yu and Hermione even seemed to be getting soaked by the spiritual mist.

Is the spiritual energy so concentrated that it's about to turn into spiritual liquid?

Hermes sensed Lin Yu's movements, and the two continued to immerse themselves in cultivation without needing to communicate with words or their spiritual senses.

Soon, they all broke through to the third level of the Foundation Establishment stage, and then continued to break through to the fourth level of the Foundation Establishment stage.

Only then did the spiritual energy gradually stop being able to keep up with their absorption, until the spiritual energy was exhausted and the room returned to silence.

The two of them slowly opened their eyes at the same time.

In an instant, two powerful auras burst forth from the two men, and because they had practiced swordsmanship, a sharp glint flashed in their eyes.

Fortunately, their cultivation levels were similar, so they had no effect on each other.

Lin Yu sighed and said, "Over a hundred million low-grade spirit stones, and we've only advanced to the fourth level of the Foundation Establishment stage. And to advance to the fifth level, we'll both need at least another hundred million low-grade spirit stones."

At the fifth level of the Foundation Establishment stage, each of them needs 131,072,000 low-grade spirit stones.

Even including the remaining spiritual energy, they still need at least 100 million low-grade spirit stones to advance.

Moreover, as their cultivation level continues to improve, the resources they need will only become more terrifying.

If Lin Yu hadn't received such a huge gift package during his Foundation Establishment, acquiring so many spirit stones...

I'm afraid I don't know when I'll be able to save up enough spirit stones for the second level of Foundation Establishment.

Hermione said helplessly, "If I had known, I would have chosen dual cultivation. That way, I wouldn't have been a burden to you, and I could have improved my cultivation with you."

Hermione is no longer a clueless newbie; she now knows what dual cultivation is.

Furthermore, dual cultivation is not just about doing that thing; you can cultivate without actually doing it.

However, the effect will be greatly reduced.

Lin Yu reached out and took Hermione's small hand, smiling as he reassured her, "You forgot? We still have the system. Once I become the first Golden Core cultivator in this world, I might be able to ask for another reward."

System: You're not even going to act anymore?

In fact, Lin Yu knew that they could only cultivate by relying on the spiritual energy in the spirit stones. If they could absorb the natural spiritual energy of heaven and earth, it wouldn't be so difficult.

Moreover, with the domineering power of the Devouring Heaven Divine Art, he could absorb spiritual energy like a whale swallowing it whole. If this were a fantasy world, he would not be in such a predicament.

But there was nothing he could do, so he could only sigh silently.

As for Hermione's statement, he disagreed. Since he had chosen Hermione, he naturally wouldn't treat her as a vessel.

"Furthermore," Lin Yu said earnestly to Hermione, "we may not reach the Golden Core stage yet, but in my vision, once we reach the Nascent Soul stage, I might be able to touch upon the true essence and laws of this world. At that time, perhaps I will be able to truly grasp what magic is. And in my knowledge of formations, there is a conversion formation that can transform magic into spiritual energy. At that time, we will not lack spiritual energy."

Therefore, Hermione's worries were only about her current predicament; Lin Yu had already made plans.

He simply hasn't grasped the true essence of magic yet, so naturally he can't convert it.

"Besides, I also have the Qiankun Creation Bottle," Lin Yu said, taking out the Qiankun Creation Bottle. "We also have spiritual liquid, although we only get four drops a month. But according to my observation, every drop of spiritual liquid is made of pure spiritual energy, and every drop is equivalent to one hundred top-grade spirit stones."

One top-grade spirit stone is equivalent to the spiritual energy content of ten million low-grade spirit stones.

This demonstrates the power of a single drop of the elixir.

At this moment, Lin Yu had eight drops of spiritual liquid in his hand, representing the quotas for last month and this month.

In other words, these eight drops of spiritual liquid are equivalent to eight hundred top-grade spirit stones.

"What a pity," Lin Yu sighed, looking at the Qiankun Creation Bottle in his hand. "We used to get ten drops of spiritual liquid every day, which allowed us to improve our cultivation. Now we only get four drops a month."

The Qiankun Creation Bottle was sealed for some unknown reason; otherwise, the spiritual liquid inside alone would have been a priceless treasure.

Inside the Qiankun Creation Bottle, a woman with a captivating figure and stunningly beautiful features raised an eyebrow and subconsciously looked towards the spiritual spring well.

In her eyes, the Spirit Spring Well was already full of spiritual liquid, and there were even countless "bricks" at the bottom of the well. These were the result of the accumulation of too much spiritual liquid, which eventually led to a qualitative change.

Each brick was equivalent to a million drops of spiritual liquid.

This can be considered another type of "spirit stone".

Even more remarkably, some of the "spirit stones" condensed into crystals, which she called spirit crystals.

Each spirit crystal is equivalent to billions of spirit stones.

She couldn't help but sigh, "System, you really dare to expose me. If this brat gets the treasure in this well, he can ascend to immortality that very day. You might be free, but how will you explain this to Father God? The Divine Realm is facing a dark invasion and needs war gods who are skilled in battle, not useless trash who rose to power on drugs."

Therefore, she must be sealed away.

Trying to force growth by pulling up seedlings is absolutely not advisable.

"However, although this world may seem weak and barren, there are some interesting things about it."

"Magic? No, this is the law of the mind, the power of words, the supreme way. Interesting, truly interesting. Is this following the path of God Father?"

"If a second supreme being emerges in the Divine Realm, then even the most terrifying darkness will be nothing to fear."