"Boom".

There was a loud, dull thud, as if the entire basement was shaking.

After a while, Merlin got up from the ground, and he patted his head slightly, his head and clothes were covered with dust. And on the ground, where the huge fireball was hit, a large crater with a diameter of half a meter was directly formed, which showed how terrifying the power of the huge fireball just now was.

Merlin hurriedly checked in Zhihai and found that the horizontal frame had turned gray again, and the spell model had not changed much except that the mana had been consumed again.

Looking at the huge hole on the ground, Merlin still had some palpitations, the power of that fireball exceeded his expectations, and the appearance of that huge fireball must be closely related to the horizontal frame that appeared for no reason in the sea of knowledge.

Next, Merlin tried everything he could, he paid close attention to the changes in the horizontal frame in the sea of consciousness, and finally, Merlin discovered the role of the horizontal frame.

It turns out that as long as Merlin releases the fireball three times, the color of the horizontal frame will change from gray to red, and at this time, as long as the horizontal frame is stimulated with mental power, then the spell model will be affected, releasing a giant fireball, which is terrifying, at least three times stronger than ordinary fireballs.

The reason for the appearance of the horizontal frame, Merlin is puzzled, perhaps because of the redesigned spell model of the "Matrix", or maybe because of the physique of Merlin's traverser, so the horizontal frame appeared.

Whatever the reason, though, this frame has a huge advantage for Merlin, at least for now, as it can be three times more powerful than a normal zero-level spell. Although Merlin didn't know how powerful the first-level spell was, if the horizontal frame was activated, the fireball released by it should not be much worse than the first-level spell.

Moreover, this is Merlin's hidden strength, which can be used as a killer weapon.

According to the huge fireball released by the horizontal frame, Merlin called the fireball technique activated by the horizontal frame the Great Fireball Technique, and this name is also very apt and vivid.

Next, Merlin continued to practice the fireball technique in the basement.

In the dead of night, Merlin lay on his desk in the dim candlelight, carefully flipping through the last volume of the Spell Codex.

There are three volumes of Old Man Aita's spell codex, the first of which is Old Man Aita's introduction to spellcasters, as well as some experiences when casting spells.

The second volume is dedicated to recording the various spell models that the old man Aita has worked hard to build over the past ten years. Merlin finished reading the first two volumes of the Spell Codex, so he reconstructed the spell model, and also simulated the spell model of the fireball spell in the sea of knowledge, but he discovered some of his current deficiencies in the process of practicing the fireball technique in the basement.

One of the most important points is the lack of mental strength!

The spell model is related to whether you can become a spellcaster, and the mental power is related to whether you can become a more powerful spellcaster, so a powerful spellcaster, whether it is in the construction of a spell model or in mental power, must be very good, in order to overcome all the obstacles along the way, and finally become a powerful spellcaster from above.

And the only way to improve mental power is to meditate.

Merlin's current mental power can only control a spell model, and if he wants to build a second spell model in the sea of knowledge, he is also powerless. That's why Merlin looked through Old Man Aita's spell codex, and he believed that Old Man Aita would definitely leave a spiritual meditation method in the spell codex.

The mysterious third codex, Merlin slowly opened, and from the few pages inside, he did find some spiritual meditation methods, but these spiritual meditation methods, according to the introduction of the old man Aita, are only primary meditation methods, and the effect is limited.

These meditation methods also have some different characteristics, some meditation methods are good at restoring mental power, once the mental power is depleted too much, meditation at this time, can be recovered in a very short time.

And some meditation methods can increase mental power, and Merlin wants this kind of meditation method to increase mental power.

After careful selection, Merlin chose a primary meditation method, and began to follow the method of this meditation method, closing his eyes and keeping his mental power stable.

This kind of spiritual meditation method requires a long period of practice before it can change subtly, so after Merlin mastered the steps of the meditation method, he opened his eyes and stood up, without checking the situation of his spiritual power, and he did not expect the spiritual meditation method to work immediately.

"Master Merlin. ”

Outside the door, Lucica's voice rang out.

"Come in. ”

Merlin was up and dressed by this time.

Lucia pushed open the door, bowed her head and came to the room, and said to Merlin: "Master Merlin, the housekeeper asked me to measure the young master's body so that I can make some clothes for the young master." ”

Merlin looked down at his body, he also felt it recently, the clothes on his body seemed to be a little smaller, and he didn't know what the road was for, these months were like blowing up balloons, and he quickly became stronger, and the clothes he used to wear looked very ill-fitting, and his movements were very inconvenient.

"Come on. ”

Merlin hesitated, but took off his coat and wore only a thin shirt, and opened his hands to signal Lucia to come up and measure herself.

Lucia hurriedly stepped forward, with a measuring stick in her hand, to measure Merlin's height.

However, Merlin's height has also jumped a lot in the past few months, so Lucia can't reach it, so she can only tiptoe, gently next to Merlin's chest, and painstakingly measure Merlin's height.

Lucia tilted her head, wearing a white maid's outfit with a slightly open neckline, and when Merlin lowered her head slightly, she could see a brilliant white inside.

Lucia was already very beautiful, and the few freckles on her face not only did not affect her beauty, but looked a little charming. Merlin's eyes narrowed slightly, and his gaze looked at Lucia a little unscrupulously, and for a while, even though it was cold outside the castle, Merlin still felt that there seemed to be a hot breath rising in his body.

"Master Merlin, it's done. ”

Lucia seemed to notice Merlin's gaze, and the look on her face was a little panicked, and she hurriedly took a few steps back, lowering her head and not daring to look at Merlin.

"Alright, you can get out of the house. ”

Merlin waved his hand and sent Lucia away, he walked to the mirror, looking at the young face inside, Merlin couldn't help but smile slightly, and muttered in a low voice: "It seems that it has been held back for a long time......"

Merlin has always had a sense of crisis since he came to this world, so no matter what he does, he is cautious and cautious.

Later, he came into contact with spells, so he threw himself into spells.

But after all, the age of this body is only sixteen years old, which is the age of blood and qi, even if he doesn't have such a mind, but the body will involuntarily have some reactions.

Merlin put on his coat and went downstairs, but he didn't see Mei Xue.

"Butler, where's Mei Xue?"

"Miss Mei Xue has left for the church. ”

Merlin nodded, he had been busy practicing fireball techniques in the basement for the past month, and often couldn't even see Mei Xue's face. However, seeing that Mei Xue goes out so early and returns late every day, it seems that she still hasn't broken through to become an elemental swordsman.

For the elemental swordsman, Merlin only knows a little rough, and if he wants to break through to become a real elemental swordsman, how to do it, Merlin is not very clear.

However, if you want to become an elemental swordsman, the most important thing is the accumulation of elements, and only when the elements accumulate to a certain extent in the body can you successfully become an elemental swordsman.

Mei Xue is a fire attribute physique, what is needed is the accumulation of fire elements, and the spell model in Merlin Zhihai is also absorbing fire elements, and there may be some commonalities between the two.

"Wait for Mei Xue to come back, find a time, give it a try, and see if you can help her break through to become an elemental swordsman. ”

Merlin secretly made up his mind.

After breakfast, Merlin put a gray scarf around his neck and walked straight out of the castle.

The butler asked with some surprise, "Young Master Merlin, are you going to go out?"

"I'm going out for a walk. ”

"Master Merlin, wait a minute, I'll call Moss. ”

Merlin shook his head slightly and said, "No need, I just want to go out and walk alone." ”

After that, he ignored the butler's surprise and left the castle directly.

Merlin walked a little way to the old man's cabin.

Looking at the cabin from afar, Merlin's expression was complicated.

The cabin has been completely deserted, because this is the place where the evil heresy once lived, so there are usually no people at all, and in the small garden in front of the cabin, there were still some flowers and plants left, but at this time they were covered by heavy snow, and only a white expanse could be seen.

Merlin had his hands in his pockets and a hat on his head, and when he looked around, and seeing that there was no one, he stepped forward and pushed through the rusty iron fence and walked up the wooden staircase.

Merlin took off his hat and gently patted the snowflakes off his hat, he looked up at the second floor, and was about to walk upstairs when suddenly, his eyes narrowed slightly, and his expression instantly became nervous.

"Footprints, someone has come. ”

Merlin said softly, he saw that there were very clear footprints on the stairs that were originally covered with dust, and there were some very wet dirt on them, it was obvious that these footprints were not very long, someone had been here, and even, the other party was probably still upstairs!

Thinking of this, Merlin looked upstairs vigilantly, then gently put on his hat, lightened his steps, and walked cautiously upstairs.

The footprints on the stairs are still very clear, thanks to the fact that the cabin has not been cleaned for a long time, so there is a lot of dust on the stairs, so that the footprints can be seen clearly.

Coming to the second floor, Merlin took a closer look at the handle on the door, there was very little dust on it, and someone should have opened the door with the handle.

"Who the hell is it?"

Merlin didn't rush into the house, he squinted, and his mind flashed one familiar person after another, the footprint looked petite, not like a man's footprint, but a woman.

"Is it Miss Caris?"

Merlin couldn't help but think of Kelis, after all, Old Man Aita is an evil heretic, and the people of Blackwater City generally dare not approach here, and the only people who are familiar with Old Man Aita and often come and go with each other, Merlin and Cariss.

At that moment, Merlin's keen hearing suddenly heard a very soft footstep coming from inside the house, and it was someone approaching the door.

Merlin's heart moved, and he hurriedly hid on the left side of the gate, his eyes fixed on the gate.

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