Since the physical body has been tempered by the Nine Grades of Earth Heart Fire, the next item is the bone quenching chapter.

With the familiar process, Zhang Yiyang ran relatively smoothly, and the slowly burning geocentric fire rushed towards Zhang Yiyang's bones like a wild horse.

Following his fingers, the fire began to wrap around Zhang Yiyang's hand bones, arm bones, and shoulder blades...... Clavicles, skulls...... Up to the leg bones, ankle bones, phalanges, and every bone in the body, accompanied by a strange itch in the bones around the body, a feeling of scratching the heart and liver, captured every nerve in Zhang Yiyang's body.

Zhang Yiyang's teeth gritted "squeak...", and the sound of "click...", every second, he was suffering, a special torment, not pain, but itching, a kind of itching that can't be scratched or reached, this feeling is not heartbreaking, but it is full of helplessness, even if it is pain, it can be more crisp, but this itch can only persist and endure.

Five days seemed like centuries to Zhang Yiyang, so long that he thought he might collapse at any time, and if it weren't for his strong will, he would have been burned by fire.

The itching finally stopped on the fifth day, but in exchange for the burning pain of high temperature, the burning pain that penetrated deep into the bone marrow, which was also the last step of the bone quenching chapter, refining the marrow and turning the wound. It is to remove all the impurities in the bone marrow and quench the inner wall of the bone.

Bean-sized beads of sweat dripped from his forehead, and Zhang Yiyang's back was already soaked with sweat.

The reason why "Forging Bones" is a nine-rank Xuan-level auxiliary secret method is mainly because of its clumsy trajectory.

Normally, the more advanced the Mystical Codex, the more nearly perfect the operation and refining method is, which is why the higher the level of the Mystical Codex, the more rare it is.

But whether it is a high-level secret book or a low-level secret book, it mainly depends on what materials you use to refine it, because even if you use the highest-level secret book, but use ordinary beast fire to refine it, the effect is meager.

However, if you use the lowest-level secret tome and use the highest-level fire source to refine it, then the effect is also very good. Just like Zhang Yiyang now, although he uses the auxiliary secret book of the Nine Rank Xuan Rank, the Nine Rank Earth Heart Fire is the highest fire source on the Nine Rank Continent after all, except for the Heavenly Fire.

The tempering finally ended on the tenth day, Zhang Yiyang found that his height had increased by ten centimeters, he was originally more than one meter four, but now he was more than one meter fifty, you must know that Zhang Yiyang is only ten years old now.

"It's finally over!" Zhang Yiyang let out a long breath, clenched his fists, and condensed the physical strength of his whole body and blasted towards the ground, "Boom...... The red black reef directly sank into a fist-sized pit, and there was no diffuse shattering.

Zhang Yiyang looked at the fist pit on the ground, he knew how much power he used just now, but he didn't smash a little reef, what does this mean, it means that the red black reef here is a metal, and it is a very flexible metal.

Zhang Yiyang looked at the vast red-black ground, and said to himself: "So many metals, what a treasure land! As long as this unknown metal is forged a little, then it will definitely be able to forge a lot of weapons and ammunition!" Thinking of this, Zhang Yiyang planned to quench some more metal ingots, which would be used when he went out in the future.

But when Zhang Yiyang excitedly prepared a pair of tools and fire spirit stones, this elated thought was directly extinguished by a basin of cold water.

Because Zhang Yiyang suddenly thought just now, how to get out, Zhang Yiyang didn't even know how he survived.

The tumbling magma is right overhead, and even if you try your best, you can rush into it, but what about the aftermath?

These are all unknown to Zhang Yiyang, and then his face became gloomy and helpless, although he is not dead, he is imprisoned in this special space, like a bird in a cage, let the treasures here be abundant and you can mine at will, but a person who has lost his freedom, even if there are more, what can he do!

Zhang Yiyang sighed, and then lazily lay on the red black ground, tilted his head, looking at the Jiupin Earth Heart Fire suspended in mid-air, his heart was full of helplessness and sighs!

"Maybe I can only die here in my old age!" Zhang Yiyang couldn't help but think, but when he saw the strange blue flame beating constantly, he had a bold idea in his heart.

"If this is a unique space, and the magma in the sky will not fall, plus these rare metals formed, does it mean that all the formations are changed because of the Jiupin Earth Core Fire?" Zhang Yiyang thought of this, couldn't help but sit up, and made a bold decision.

This decision is to absorb this nine-grade earth heart fire, although it is bolder, but it is much stronger than being trapped here, although he has the determination to die, but Zhang Yiyang still has a little bit of confidence in his heart, although the probability is not large, but he must give it a try.

His only reliance is that because there is a secret book of corrosive attributes in the Qiankun Ring, Zhang Yiyang believes that relying on his super mental arithmetic can also deduce the cultivation method of the fire attribute.

At that time, Zhang Yiyang was looking at this corrosive attribute secret book and some cultivation poisons, and he was very moved, but later he knew that these so-called outcasts in Wuzun had cultivated these forbidden attributes before they were regarded as outcasts, so Zhang Yiyang gave up this idea.

The secret book was turned out by Zhang Yiyang and watched carefully, after breaking through the Nine Rank Xuanzun, the attributes must be poured into the dantian gold liquid in the body and fused with it, so that it can be called a spiritual power.

Because the dantian of the Nine Rank Xuanzun is the Nine Rank Gold Liquid formed after the Jin Dan is turned into liquid, it is relatively easy to accept the attribute and fuse with it, and this secret book of poison attributes records its absorption method and operation method.

Absorption is to control the absorbed attributes with a special sealing method, so that its attributes run through the eight meridians, and finally through the dantian, the purpose is to allow the human body to be familiar with the attributes to be accepted in advance, so as to promote the rapid fusion of the gold liquid in the dantian, this process mainly depends on the adaptability of the person, some people only need a short ten days when accepting the attributes, and some people need half a year.

Once there is a familiar matching process with the meridians in the dantian, then there is full preparation for the next step of fusing spiritual power.

It's not that with a match, you will definitely be able to fuse successfully, because fusion requires super perseverance and tenacity, even if you have perseverance, but your Nine Rank Gold Liquid is not strong enough, then you will fail in the end.