The retreat place that Chen Hao chose was somewhere in a natural cave halfway up a black barren mountain in the extreme western region of the Kengpa Secret Realm.

Here, it is not far from the area where Cheng Da's old goods retreat is located in the late stage of the demigod, and they are only separated by a few mountains.

However, at the moment, Chen Hao is not a retreat to break through the realm, he is just cultivating and improving the level of a martial art, so there should not be much impact on each other.

After entering this natural cave mansion, Chen Hao sat down cross-legged in the depths of the cave mansion, and first ran the "Sorrowful Fire Glass Palm" for a few weeks, and then took out the silver-filled flame law origin crystal......

Don't look at the size of this silver crystal, it looks inconspicuous, but it is formed by the high concentration of pure flame law origin power, representing the purest flame law power.

Although after condensing into a crystal, this small silver crystal feels almost no temperature to the touch, and even a little cold feeling reaches the palm of the hand, but in fact this is just a manifestation of the effect of the opposite of things.

Once Chen Hao really integrated this silver crystal into his body and refined it into his left arm, the heat it emitted after melting was definitely an extremely terrifying and astonishing degree.

Even if it hadn't started yet, Chen Hao already knew that he would experience an unspeakable horror torture at that time. After all, this is the power of the origin of the flame law between heaven and earth, even with Chen Hao's current martial realm cultivation in the middle stage of the demigod, it is absolutely impossible to completely ignore the scorching power of this law origin level.

However, if you want to improve the level of the "Sorrowful Fire Glass Palm", this kind of grinding is obviously unavoidable, Chen Hao has already been mentally prepared, no matter how painful it is, he must grit his teeth and endure it......

Taking a deep breath, Chen Hao raised his hand and swallowed the small silver crystal into his mouth, and Ji'er closed his eyes......

As this silver crystal, which represented the origin power of the Flame Law between Heaven and Earth, entered his body, Ji'er was gradually integrated into the true qi in Chen Hao's body, and a scorching temperature instantly spread......

"Humph!"

Chen Hao, who closed his eyes and entered the state of returning to his senses and looking inside, let out a painful muffled sound in his throat.

The silver crystals that he swallowed in his stomach emitted an unbearable temperature as soon as they began to melt, almost roasting Chen Hao's flesh and blood until they were cooked.

The pain of flesh being roasted to the point of being cooked was really not an ordinary ecstasy, and Chen Hao's entire body couldn't stop trembling.

Moreover, as the melting of this silver crystal accelerated, the heat and temperature emitted from its interior became more and more terrifying...... At this moment, Chen Hao even had a feeling that green smoke had begun to emerge from his abdomen.

This is the rhythm of his flesh being directly burned into ashes by this terrifying high temperature, turning into green smoke.

Intense pain came, Chen Hao's body began to tremble, and he even suspected that the ultra-high temperature emitted from the inside of this silver crystal might be able to almost burn his entire body to ashes in a short time!

"Ah......h

I really couldn't hold back, Chen Hao opened his mouth and let out a painful howl, and between his throats, some green smoke faintly came out, this is a real burning from the inside out, if it is an ordinary person, it is estimated that it will not even last half an instant, and it will turn into a pile of flying ash in the first time.

Even if Chen Hao now has the strength of the mid-stage martial realm cultivation of the demigod, the taste of the flesh and blood in his body being scorched by the super high temperature is also unbearable, and the only feeling Chen Hao has at this moment is ********......

Almost subconsciously, when he felt that he was already a little unbearable, Chen Hao directly used the true qi in his body to wrap this rapidly melting flame law origin crystal.

In an instant, the painful feeling of flesh and blood being scorched by the super high temperature completely disappeared, and due to the wrapping of true qi, the power of the flame that was rapidly melting was isolated, and Chen Hao finally breathed a sigh of relief.

"Ma forced, this kind of ecstasy is really special and not human......"

Panting, Chen Hao secretly whispered a few words in his heart, and Ji'er began to guide the true qi wrapped in this silver crystal, slowly running along the meridians in his body towards his right arm......

His right arm can be said to have been scorched by that extremely high temperature for many years due to the cultivation of the "Sorrowful Fire Glass Palm", so in terms of heat resistance, it is obviously stronger than the rest of Chen Hao's body.

But even so, the meridians and flesh of his right arm would definitely not be able to withstand the ultra-high temperature emitted by this silver crystal, after all, he was condensed by the purest power of the Flame Law in heaven and earth.

The only thing Chen Hao could do at the moment was to introduce this silver crystal into his right arm, and slowly release the layer of true qi wrapped around the crystal, allowing the power of the flame law origin within it to be slowly released one by one......

This kind of action is like boiling a frog in warm water, waiting until all the silver crystals have melted, and all the power of the flame law origin in it has been dispersed, it is like if the water temperature has reached a limit, if the frog is not dead...... That is, if Chen Hao's left arm has not been burned to ashes, his arm will be completely adapted to this super high temperature.

That was equivalent to the Flame Law Origin Power contained in this silver crystal, which had been successfully integrated into Chen Hao's arm.

In the future, when he casts the "Sorrowful Fire Glass Palm" again, the terrifying temperature formed when his left palm is slapped out, even if he is a demigod-level powerhouse, he may not be able to carry it easily......

It's just that although this truth is simple to say, the degree of pain in the process is obviously not clear in a few words that can be said lightly and skillfully.

As Chen Hao gradually spread out the layer of true qi power wrapped around this silver crystal, allowing the power of the flame law origin within it to emanate out little by little, merging into his left arm, Chen Hao's entire left arm became completely red in an instant.

In just a split second, he felt as if his entire left arm was completely unconscious...... No, it wasn't that he was unconscious, but that his whole body and mind were enveloped by a feeling that was burning to the extreme......

"Ah......h

With his eyes closed, Chen Hao's mouth let out a terrifying howl like a madness, at this moment, he was really ********......