Zhonghe County is not big, it is located in the interior of the Great Jin, at most it is a slightly larger county seat, except for a few bandits around, life is still very peaceful.

Liu Siyi and the eight of them are now in an inn in this Zhonghe County City, and the reason why they came here is entirely because there is an underground fire vein located under this city.

The underground fire veins sound mysterious, but in fact, it is clear from real-world science that 100 to 150 kilometers below the earth's crust, there is a "liquid zone", in which there are molten silicates containing gaseous volatile components at high temperatures and pressures, that is, magma. Once it washes out of the surface of the earth from a weak part of the earth's crust, it forms a volcano.

This is the case with the magma in the real world, and the magma in the heavenly world, which contains a strong fire vitality, is a very good place to cultivate the fire attribute exercises.

"Rodney, we only have one cultivation method now, the Nine Dragons Divine Fire Skill, although it is the top exercise, do you think we are all suitable for cultivating this exercise? Is it to find a few more exercises to cultivate? Liu Siyi sensed the faint and inaudible fire vitality in the city, and asked while searching in the Magic Mirror of the Heart.

For example, the ice dragon Skasa, the body is an ice dragon, ice attribute, is it really good for you to let him practice the fire attribute exercises? There is also Lan Pill, transplanted Bing Dun cells, can he also cultivate? These are all things that have to be clarified.

In addition to the Nine Dragons Divine Fire Technique, the Silver Moon Sword Technique naturally also has a unique internal qi cultivation technique-Bright Moon Sword Qi Technique, although the two sets of exercises are of similar level, they definitely do not have the effect of the Nine Dragons Divine Fire Technique.

"Master, at this time, you can see the role of the Hero Invincible World." Rodney explains, "Not only has the skills of the World of Heroes not only increased our control and power over magic, but most importantly, it has given us a variety of different attributes, so we can practice this skill. ”

"Found it, it turned out to be here." As you can see from the Mirror of the Heart, the underground fire vein is generally a huge underground passage that leads directly to the underground rock flow. This passage is naturally formed, and it is very likely that tens of thousands of years ago, or even hundreds of thousands of years ago, it was an active volcanic crater, which is why such a passage was formed. This passage gradually decreases as it reaches the surface, and only then is it hidden by the city on the ground, and it has not been discovered.

It's just that even if the passage is small, even if there is only a gap left, the fire vitality will come out. From the Magic Mirror of the Heart, you can see that such a tiny gap leads to the civilian area. This also explains why this underground fire vein was discovered by Zoroastrianism, after all, Zoroastrianism is a sect that penetrates deep into the common people.

At this time, maybe the Zoroastrian Sect has discovered this underground fire vein, but in addition to the main passage leading to the depths of the fire vein, there are many branch passages, even if there are Zoroastrian people who go down to investigate, they will not come across it so coincidentally, so there is no need to worry.

Liu Siyi and his party came to the top of the gap, because this is a civilian area, the houses are messy and relatively hidden, and no one will find that there are a few people missing. Sensing that there was no one around, a dimensional door opened, and the group quickly disappeared into the civilian area, appearing on the passage to the underground fire vein.

"It's so rich in fire vitality, if we can let go of cultivation, I don't know what kind of height we will be raised to in two thousand years." Feeling the increasingly strong fire vitality, Long Hao couldn't help but say: "If it weren't for the continuous survival of the thunder tribulation and obtaining the avenue and divine powers that suit you, hey! ”

"Think about it, the vitality here is strong, but the bottleneck between each level of strength is not so easy to overcome, you don't feel the pain of strength stagnation to say this." Liu Siyi persuaded him in turn, he really felt the gap between the peak of the ninth order and the tenth order, and at that time, no words were enough to describe his depression.

"Okay, let's stop here, the concentration of vitality here is enough for us to cultivate." Rodney led the group to the depths of a branch passage, a large underground cavern with rocky cliffs that made it less susceptible to accidents like collapses. It's not far from the ground, but it's just a little deep into the underground fire veins, and you can't even see the shadow of the magma.

"Why don't you go deeper down, the aura below is more intense, and it's more suitable for cultivation, isn't it?" Long Xue asked.

"Xiaoxue, our purpose is not to cultivate deep internal qi, so as long as the fire vitality is enough to cultivate, we can go down when we need it." Liu Siyi replied.

While the two were talking, Rodney had already practiced the Body Refining Fist Method, that is, the Liancheng Leather Tempering Fist obtained from the Wu family. After a set of boxing techniques, he shook his head, changed to a more rigorous boxing method, and began to practice. After a long time, he stopped, shook his head and said, "Master, it seems that our physical strength has at least reached the Yijin realm, and the Liancheng Leather Tempering Fist and the Full Moon Forging Bone Fist obtained from the two families have no effect at all. ”

"Hehe, this is good news, at least it will save us a lot of time to practice boxing. Okay, now that we've finally arrived at the place, let's practice separately first. Liu Siyi looked at everyone and said, then walked to the side alone, took out the space-time scepter, and released the time acceleration formation on himself. The preparation is not done in vain, this kind of BUG-like space-time scepter, each of the eight people here has one hand, and each of them can cultivate at a hundred times faster than cheating.

The others also found suitable positions one after another, separated from each other by a certain distance, and began to cultivate.

First of all, I have to scrap the real chakra in my body, I am a little reluctant, this is a powerful power that took a long time to cultivate, but now it has to be discarded, hey~

"That's fine, just try to fight with the chakra that was temporarily extracted."

The consumption of the true chakra is very simple, as soon as the multiple shadow clone technique is released, the true chakra in the body is cleared by half, and after a few times, the true chakra is consumed.

"White eyes!" When the true chakra in his body was completely consumed, Liu Siyi immediately opened his white eyes, but because he had always operated the true chakra from the meridians to release ninjutsu, he had never had the experience of temporarily extracting chakra like now, so he couldn't even open his white eyes. However, after a few more experiments, he successfully opened his eyes and released other ninjutsu.

"It's really troublesome to temporarily extract chakra." At this time, Long Hao also successfully released the ninjutsu with the temporarily extracted chakra, and complained.

"Have you cleaned the chakra from your body?" Liu Siyi asked, seeing that everyone nodded, before he said longingly: "Okay, now let's cultivate the Nine Dragons Divine Fire Skill, let me see how powerful this Divine Skill is." ”

"Remember the amount of internal qi in the body of the Black Dragon Society Long Haoran, the three grades, don't exceed this range when you cultivate." In the end, Rodney did not forget to advise.