In the cultivation realm, there are a total of thirty-two kinds of strange fires, all of which are born and earth-made, and they are divided into two categories, one is the heavenly fire, and the other is the earth fire, comparatively speaking, the difference between these two types of fire in terms of power is not too much, each has its own characteristics, but the only difference is that the heavenly fire can be promoted, while the earth fire cannot, this is why it is the reason why among the thirty-two kinds of flames, the top ten are all heavenly fires.

Heavenly fire, as the name suggests, is a flame from the heavens, in some specific environments, under certain conditions, it is possible to give birth to heavenly fire, heavenly fire is different from earth fire, each kind of heavenly fire at the same time and can only exist one, that is, only after one heavenly fire disappears, the heavens will give birth to the next one to replace it.

So far, there are only ten kinds of Heavenly Fires that have been discovered, which means that whether it is in the Cultivation Realm or in other planes, there are only ten Heavenly Fires, and there will never be two identical Heavenly Fires, and in the Thunder Essence that Tang Lin obtained, there is a hidden Heavenly Fire, and it is also a very aggressive flame in the Heavenly Fire - Lei Xinyan!

"Lei Xinyan" ranks fourth among the ten kinds of heavenly fire, not that its power is not as good as other fires, the ranking of the heavenly fire is not measured by the power of the fire, but by the order in which they appear successively to rank, among the ten heavenly fires, each has its own characteristics, take "Lei Xinyan" as an example, this flame is extremely aggressive, among the ten heavenly fires, in terms of the degree of danger, "Lei Xinyan" is definitely ranked first, from ancient times to the present countless monks who have died in its hands, all monks who want to refine it have to bear "Lei Xinyan." "The crazy attack, after surviving it, you have the qualification to refine it, pay attention, just the qualification, it doesn't mean that you can refine it, because "Lei Xinyan" also has a characteristic, that is, only a monk with a thunder spirit root can really refine it, and then it can be used for his own use.

Among these ten kinds of heavenly fires, "Lei Xinyan" is undoubtedly the most special, but this is not to say that other heavenly fires are worse than it, strange fires can devour each other, especially heavenly fires, once the two heavenly fires meet, there is only one ending, one of them is devoured and refined by the other, and at the same time, the characteristics of the heavenly fire will also be absorbed.

There is no limit to the devouring between the strange fires, the heavenly fire can devour the earth fire, and the earth fire can also swallow the heavenly fire, in the cultivation world and various planes, there has been a legend, according to legend, as long as any kind of fire, the remaining thirty-one fires will be swallowed up, there will be a qualitative change, this flame is called the "Fire Emperor", "Fire Emperor" Once it appears, it can easily burn a plane to ashes, in front of it, any resistance is futile and ineffective, in the cultivation realm, there has been a great power, his flame is also a heavenly fire, it is said that his flame has devoured the other nine kinds of strange fire, this great power when fighting with people, as long as he sacrifices his fire, then his opponent can only wait for death, relying on it, the original great power can easily cross the level to kill the senior monk, and it does not take any effort, but also because of the existence of this terrifying fire, in the end, this great power was surrounded by more than a thousand top monks, the most rear, although the great power died, but only a few of the top monks who participated in the siege and killed him came back alive, and the terrifying flames dissipated by themselves with the death of that great power.

There is no way to verify this matter, no one knows whether the Dao is true or not, but the devouring between the strange fires does exist, and now Tang Lin has obtained the "Lei Xinyan", if this news is known by others, then Tang Lin has 100,000 lives and is not enough to die.

At this time, Tang Lin in the room was very entangled, he was thinking about whether to refine this "Lei Xinyan", the risk of refining "Lei Xinyan", he knew the Tao, for the characteristics of this flame, Tang Lin was very understanding, in the book of heaven "Qi", the characteristics of each strange fire were recorded in detail, when he refined the "Wood Fire" from Dongfang Xiao, it took considerable effort, and now there is another "Lei Xinyan", the most troublesome thing is that if he wants to use this "Lei Jing" to refine "Lei Yuan Dan" , then you must first refine the "Lei Xinyan", otherwise, this "Lei Jing" will not be able to enter the Dan, and without the "Lei Yuan Dan", then he will have no way to derive the Lei Ling Root.

Looking at the thunder essence in his hand, Tang Lin's face flashed with a wry smile, "Lei Yuan Dan" He must refine it, there is no doubt about it, but before that, he must first refine this "Lei Xinyan" To be honest, Tang Lin is not confident that he can refine it, first of all, he does not have a thunder spirit root, which does not meet the refining conditions, but Tang Lin has a more rebellious Qiankun Jue, and another point, after the last thunder tribulation, because of the Qiankun Jue, he absorbed a large amount of thunder and lightning power, although they were all refined by the Qiankun Jue and became his true yuan, but Tang Lin always felt that there was something wrong with his Yuan Baby.

After the thunder tribulation, he can cast a thunder spell without a thunder spirit root, of course, there is a shadow of the Qiankun Jue, the Qiankun Jue is a thing against the sky, it stands to reason that it should not exist, but it is in Tang Lin's hands, and he can still cultivate, Invincible told him at the time, under the whole world, those who can cultivate the Qiankun Jue, I am afraid that in addition to myself, I am afraid that there will be no second person.

Also, there is something wrong with his Yan Thunder Sword, since the Thunder Tribulation, the color of this sword has stayed in dark blue, Tang Lin can feel that the Yan Thunder Sword at this time is full of violent thunder and lightning power everywhere, but there is no shadow of the Yan Huang Sword, and the attributes have completely changed, before, there were two attributes on the Yan Thunder Sword, but now there is only the power of thunder and lightning.

For these problems, Tang Lin has no clue at all, in terms of cultivation, he is a rookie, his knowledge is basically from Long Xiaotian, or the invincible brother in the sea of spirits, I want to ask the invincible, but Tang Lin found that since the last time he woke up, this guy has fallen asleep again, no matter how Tang Lin tosses, the invincible has no intention of birds at all, which makes Tang Lin very painful.

"What's the matter, why are you frowning, shouldn't you be happy to find a treasure?"

Seeing that Tang Lin was a little hesitant, Shen Qinghan asked very considerately.

"It's okay, this thing is a treasure, yes, but it also needs to be usable. ”

Tang Lin sighed secretly, what he said was absolutely the truth, "Thunder Essence" is indeed a good thing, not to mention that there is a heavenly fire in it, if this thing is placed outside, it will definitely be able to sensational the entire cultivation realm, among the ten kinds of heavenly fire, the most offensive "Lei Xinyan" was born, I am afraid that people outside will not be able to calm down even if they want to.

Heavenly Fire is different from other heavenly and earthly treasures, there are several of these things, there are ten in total, there are countless cultivation planes between heaven and earth, and heavenly fire may appear in any plane, Tang Lin is not sure if there are other heavenly fires in their plane, but he is sure that this "Thunder Heart Flame" of his is absolutely unique.