In the deepest part of the practice area, Shi Long came to an ancient-looking but spotless practice room, and it seemed that there were still people who maintained this practice room.

Shi Long opened the door of the practice room and walked in, before the formation was opened, he could feel that there was this kind of heat in the practice room, which was not the heat that ordinary people could withstand.

This made Shi Long couldn't help but be overjoyed, and when Xingtian told him about this practice room, he didn't have much interest.

He felt that even the practice room with fire energy refining body was the same as the practice room he had entered with sect points before, and it would not have much effect on him.

But now he found out that this was the core position of the fire spirit vein in the real Tianxing Gate, and only the core position of the fire spirit vein could emit such heat.

"This is actually the core area of the Fire Spirit Vein, so after opening the formation, I don't know if the heat energy generated can improve the realm of Xuanwu Cultivation Technique. ”

As he spoke, Shi Long directly opened the formation such as the practice room, and then the fire energy of the fire spirit vein was directly released into the practice room.

And feeling that his body was washed by the heat energy, he began to burn and pain, so that Shi Long ran the Xuanwu Refining Body Determination for a week and began to inhale these heat energies into his body and began to temper his body.

Ever since the last time he borrowed heat energy to temper his body in several fire-based practice rooms on the periphery of the practice room, he had been stopping at the fifth level of the Xuanwu practice technique and had not been improving.

But this is the fire energy that erupted from the fire spirit vein, and after tempering Shi Long's body, he found that the fifth level of the Xuanwu Refining Body Determination had already shown signs of breaking through.

This made him inevitably accelerate the absorption of fire energy into his body, and accelerate the tempering of every part of his body.

And the feeling of fire, though not to the extent that it was unbearable for him.

But after my energy reached a certain heat, his body also emitted some black impurities from time to time.

At the same time, the whole body is soaked with sweat, but the sweat is directly evaporated by the heat energy when it comes out.

Because this practice room does not use any sect points and contributions as starting energy, as long as Shi Long does not suspend the formation by himself after the formation is activated, then the formation will continue to run.

The underground fire spirit vein energy was continuously injected into the practice room, so Shi Long didn't know how much fire energy he had absorbed in the practice room to temper his body.

But from the very beginning, every pore on his body was about to be burned to dry, and gradually after the hot energy entered his body and could not create any burning sensation, Shi Long also stopped cultivating.

And at this time, his Xuanwu practice technique was finally a breakthrough in the sixfold realm.

However, the strength of his physical body has not improved much, and he is still at the level of a heaven-level inferior mystic weapon.

"Although the Xuanwu Refining Body Duel has broken through to the sixth level, the strength of the physical body has not been significantly improved, and it seems that it can only be directly tempered with the flames of the earth spirit veins to achieve the real tempering effect. ”

Shi Long was a little dissatisfied after checking the strength of his body.

Although the Xuanwu Cultivation Body Technique had broken through one level, before breaking through, his Xuanwu Cultivation Body Technique had also reached the level of the fivefold peak.

So the breakthrough didn't surprise him, and the strength of his physical body didn't improve at all, which surprised him a little.

Therefore, he knew that if he wanted his body to be stronger, he could only directly bake it with the spiritual fire of the fire spirit vein in order to achieve further tempering.

Therefore, Shi Long was now thinking about how to go down to the fire spirit vein and use the flames of the fire spirit vein to temper his physical body.

"Hey, the Heavenly Treasure Map actually lit up automatically, could it be that under this practice room is the fire spirit vein?"

Shi Long originally wanted to go to his master Xingtian to ask if he could enter the core of the fire spirit vein and use the spiritual fire to temper his physical body.

But when he got up, the Heavenly Treasure Map in his sea of consciousness automatically detected the location of the fire spirit vein, which made him couldn't help but be surprised.

You must know that this kind of spiritual vein of the sect is generally blocked by the large array, and the Tianbao Diagram is also difficult to detect, but now it can be detected in the practice room.

Then it means that the formation was not used to shield the underground spiritual veins under the practice room where he was located, which made Shi Long interested and wanted to dig a passage through the underground spiritual veins in the practice room.

"Shilong boy, the underground fire spirit vein is shielded by various large arrays, you can't enter the fire spirit vein by digging a passage, you can directly enter the fire spirit vein by laying a crossing spell in the practice room, but you have to think clearly, if you directly enter the core of the fire spirit vein through the crossing spell, it is likely that your body will not be able to bear it and will be burned directly into ashes. ”

The black dragon knew that this method was very dangerous, but if he wanted to improve Shi Long's physical body again, he could only use the flexibility of the fire spirit vein to directly temper his body to have an effect, so he had to say his method.

"Really, it turns out that I can directly enter the fire spirit vein, but if this is the case, then there is no need to think about it, with my current strong body of the heaven-level lower grade mystic weapon, it is impossible for it to be directly burned to ashes by the fire spirit vein. ”

Shi Long still has some understanding of the spiritual fire of the fire spirit vein, how to say that when he was in the fairy world, he had seen the power of the fire spirit of the fire spirit vein.

He couldn't directly melt the heaven-level mystical weapon, otherwise he wouldn't dare to enter the fire spirit vein and borrow the idea of flexibly tempering his body.

After knowing the methods such as entering the fire spirit vein, Shi Long also directly laid a passage spell in the practice room and hit the ground, and then a passage leading to the bottom appeared on the ground.

And a scorching force rushed to his face in the passage, which made Shi Long even more sure that he had passed through this portal, so he appeared directly in the fire spirit vein.

Although there would still be some dangers, he also knew that this was an opportunity, and there must be a lot of fire spirit stones and other genius earth treasures in the fire spirit veins.

So he didn't think much of it, he jumped straight down, and then his body passed through the portal, and immediately appeared in a sea of fire.

The clothes on his body were burned clean in an instant, and even the long hair on his head and all the hairs on his body were burned to the ground.

At the same time, a scorching force burned Shi Long, and he almost let out a scream.

"Damn, it turns out that the fire spirit of the fire spirit vein is so terrifying, it seems that this fire spirit vein is much more advanced than I imagined, but it is also a rare opportunity for me to temper my body. ”

Although the raging fire made Shi Long's body feel an unbearable burning sensation, there was a feeling that he was going to be burned to death.

But Shi Long still endured it, and the power of the water system in his body spread from the dantian to the meridians of the body, quickly repairing Shi Long's cells and meridians that were burned by the spiritual fire.

And the flexible power is much faster than the repair speed of the water martial power in Shi Long's body, so soon a fire spirit power directly penetrates Shi Long's body and begins to wrap and burn Shi Long's internal organs.

Especially at this time, Shilong's dantian also appeared like an activated black hole, and began to quickly absorb the power of the fire spirit, which made Shilong's dantian feel a burning sensation, making him scream directly in pain.