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

The spiritual liquid contained such a vast amount of spiritual energy that Lin Yu and Hermione felt as if they were immersed in an ocean of spiritual energy.

It's impossible to finish it all, there's simply no way to finish it all.

Even with their Foundation Establishment stage cultivation level, and even when they were fully utilizing the Devouring Heaven Divine Art, they still felt that the spiritual energy was inexhaustible.

Lin Yu was so excited that his body was trembling. It was the first time he had ever felt so rich.

The two stopped wasting words and closed their eyes to focus on their cultivation.

The aura emanating from the two individuals began to rise steadily.

With their current Foundation Establishment Stage 4 cultivation level, plus the remaining spiritual energy after their previous advancement, each of them now only needs 100 million low-grade spirit stones of spiritual energy to advance their cultivation level.

Therefore, they quickly reached the fifth level of the Foundation Establishment stage.

Advancing from the fifth to the sixth level of the Foundation Establishment stage requires 524,288,000 low-grade spirit stones per person.

Compared to the "gold content" of the spiritual liquid, it naturally doesn't matter.

As a result, the two of them quickly advanced to the sixth level of the Foundation Establishment stage.

Next, each of them needs 2.297152 billion low-grade spirit stones.

The spiritual energy in the elixir can still sustain it.

Until they advanced to the seventh level of the Foundation Establishment stage in one go, at this point, if they wanted to advance further, they would need 8.3886 million and 0.8 million low-grade spirit stones, and that was the amount required for each person.

Lin Yu wasn't in a hurry. He waited until the two of them had completely absorbed all the spiritual energy from the first drop of spiritual liquid before slowly taking out another drop.

Inside the "Always-Awaiting" room, the spiritual energy, which had just been depleted, was instantly replenished by a massive amount of spiritual energy once again.

The two continued to frantically improve their cultivation. Supported by a massive amount of spiritual energy equivalent to 26 billion low-grade spirit stones, they simultaneously advanced to the eighth level of the Foundation Establishment stage.

Having traversed four minor realms in one breath, when the two reopened their eyes, their internal energy surged continuously, even causing the ground to tremble, as if the entire Hogwarts Castle had been alarmed.

Many people are at a loss.

"What happened?"

Even Dumbledore sensed it.

But even he couldn't detect where the change came from. Could it be an earthquake?

Fortunately, this series of twists and turns came and went quickly and inexplicably.

Inside the "Always Required" room, Lin Yu and Hermione concealed their presence.

The higher their cultivation level, the more terrifying the resources they need become.

For example, if they want to advance their cultivation level, each of them will need a total of 33.554432 billion low-grade spirit stones.

The sheer number of low-grade spirit stones alone could pile up into a small mountain.

(That's equivalent to over 30 billion billiard balls piled together.)

Such a vast amount of spiritual energy, even for someone at the Foundation Establishment stage, is enough to cause a huge upheaval.

Rather, it's more accurate to say that this is only the Foundation Establishment stage, yet it already possesses such imposing power.

Lin Yu and Hermione were not surprised, after all, one of them was a Chaotic Dao Body and the other was an Innate Sacred Body Dao Embryo, their talents were terrifying and they needed a lot of resources.

Moreover, they cultivate supreme Dao techniques, and the Devouring Heaven Divine Art is extremely domineering, requiring even more resources.

Even the sect leaders admit that during their Qi Refining stage, they already require five times the resources of ordinary cultivators.

Upon reaching the Foundation Establishment stage, the rate is ten times that of ordinary cultivators.

However, although more resources are needed to advance to a higher realm, the combat power at the same level will also be stronger.

They can even defeat powerful enemies who are above their level.

To reiterate, if cultivation realm is like a level in a game, then the resources needed for cultivation will be transformed into attributes.

In the case of equal levels, without considering equipment factors, the winner is naturally determined by the difference in attributes.

Therefore, neither of them felt it was a waste; the enormous resources they needed today would become their powerful foundation in the future.

"Continue," Lin Yu said, and then released more spiritual liquid.

The third drop, the fourth drop, the fifth drop.

This time, it wasn't until Lin Yu took out a full six drops of spiritual liquid, which, under the effect of the Spirit Gathering Array, was equivalent to the spiritual energy support of seven or eight drops of spiritual liquid, that the two finally advanced to the ninth level of the Foundation Establishment stage.

Although they still had a great deal of spiritual energy after their successful advancement, it was unfortunately not enough for them to continue to improve much further.

Of course, they didn't waste it; instead, they divided the remaining spiritual energy equally, which was equivalent to the spiritual energy content of hundreds of billions of low-grade spirit stones.

However, if they want to advance from the ninth level of the Foundation Establishment stage to the tenth level, they will need a total of 134.217 million,728,000 low-grade spirit stones.

Moreover, it is a resource needed by everyone.

"If we use spiritual liquid instead, each person will need at least ten drops of spiritual liquid," Lin Yu sighed.

Sure enough, he and Hermione were both money-devouring beasts.

He had been saving up for three months, and even that was four months' worth of spirit liquid, but he had only managed to accumulate sixteen drops of spirit liquid.

Based on this calculation, it would take another three months to save enough.

He currently has eight drops of spiritual liquid, not even enough for one person to advance.

Hermione also opened her eyes, looking at Lin Yu with a complicated expression.

Lin Yu seemed to guess what she wanted to say, and raised his hand, saying, "Stop telling me to advance first. Now that we have the Qiankun Creation Bottle, even if we can no longer count on the meager rewards from the system, we can slowly accumulate enough."

System: Is this my fault?

Lin Yu knew that the problem they faced was that this world completely lacked the resources they, as cultivators, needed, which was why it seemed so difficult.

If this were a fantasy world, even without spirit stones, as long as you find a place with abundant spiritual energy, you could steadily improve your cultivation level every day.

Now, however, they can only rely entirely on spirit stones or spirit liquids.

Moreover, Lin Yu has many good things in his possession, such as those great medicines that are hundreds of thousands of years old.

The problem is that his cultivation level is not high enough. Even if he wanted to refine pills, he couldn't handle 100,000-year-old elixirs.

As for low-grade pills, they are useful, but their effects are generally limited.

It's better to take it slow and get promoted gradually.

As I said before, his plan not only included the idea of ​​using formations to convert spiritual energy, but also some pill formulas that he had his eye on.

Therefore, Lin Yu was very confident.

Besides, this is only the beginning; the first year at Hogwarts isn't even over yet, and he's already at the ninth level of the Foundation Establishment stage.

"My goal is to reach the Golden Core stage before the second year. By then, I won't have to look after anyone anymore," Lin Yu said, narrowing his eyes. Right now, he was a Foundation Establishment cultivator and still had to give face to some people.

But when he reaches the Golden Core stage, what should you call me?

Shouldn't we call him "Ancestor"?

Seeing Lin Yu's confidence and considering the matter of the Qiankun Creation Bottle, Hermione breathed a sigh of relief and refrained from proposing that Lin Yu monopolize the resources and instead allow him to advance to the Golden Core stage first.

However, she also knew that she was the one who had slowed down Lin Yu's progress.

If Lin Yu had been the only one enjoying the resources, he would probably be at the Golden Core stage by now.

So Hermione took the initiative to come closer, snuggled into Lin Yu's arms, and whispered, "Am I really useless? I should have chosen the dual cultivation technique back then."

Just as Lin Yu was about to comfort her and tell her not to think that way...

System: "Triggering quest: Sect Trial (Quidditch Match). Represent Gryffindor of Canaan School and defeat Ravenclaw of Canaan School. Quest complete. Reward: Original copy of the Yellow Emperor's Inner Classic and 100,000 mid-grade spirit stones."