After this lasted for half a while, the stone box finally let out a slight cracking sound, and the black hard object on its surface continued to fall off, and countless gorgeous spiritual lights were transmitted from it, illuminating the entire cave as bright as day.

"Click!" finally opened a crack in the closed place of the stone box. The spiritual energy that permeated the cave finally began to dissipate slowly.

Thunder fell to the ground with a thud, and the pain was so severe that it was difficult for him to move his fingers. The old dragon was also stunned, and left a sentence of 'I'm going to digest it!', and then there was no more sound.

"If there is nothing in this broken box that satisfies me, I will curse the eighteenth generation of the people who made this box!" After lying down for a while, Thunder scolded, broke up, and once again fixed his eyes on the stone box.

At this moment, the stone box has already turned into a jade box with a green body, and the faint fluorescence flows on the surface, which is very beautiful. Thunder gently opened the stone box with excitement.

A strange blade as thin as a cicada's wing, crystal clear and transparent, the size of a palm, was immediately presented in Thunder's gaze.

"Thunder Devouring Heart Method!" As soon as Thunder's fingers touched the blade, a tidal wave of information poured into his mind.

"Yu Tiansheng was born alone in the stone vein, persevered in refining his body for thirty years, and finally the dragon soared into the sky and set foot in the martial realm! Before the age of fifty, he became the peak powerhouse of the earth martial arts with his self-created thunder devouring heart method, and since then he has been happy to take revenge, and he has been in great Qin, and there are few rivals! Later, because of his reckless and arrogant personality, he finally provoked a very powerful opponent, escaped with serious injuries, and his life was not long ......"

Thunder took a deep breath, and the owner of the stone box was also a lonely stone vein. The other party's perseverance and refining for thirty years took him to open the meridians, and this perseverance is really admirable.

"Looking back on my life, I have no regrets. There is no need to talk about revenge. Only the creation of a lonely life, can not bear to be buried in the yellow sand, especially on the occasion of death, exhaust all the energy to exert great means, leaving a lonely life's unique learning, for the later fate, so that it can see the light of day again, carry forward, lonely wish is enough......"

"The maker of this stone box is also a strange senior!" Lei Ting sighed and sighed: "The other party seems to be the Great Qin clan, but for some reason, this stone box fell to Dayan." But now that I've gotten it, I won't insult this master......"

The energy information that remained on the blade before, in addition to a brief introduction to the life of the owner of the stone box, was to leave the content of this senior's self-created mastery.

Thunder Devouring Method: A special mental method that uses the power of thunder and lightning to temper the body and true qi. Once refined, his cultivation can soar with the help of thunder and lightning! Although this senior's cultivation speed is ten times that of ordinary people after the Lonely Stone Vein is opened, he can soar to the peak of the Earth Martial Realm before the age of fifty, and it can also be seen that the cultivation speed of this Thunder Devouring Heart Method must be extremely terrifying.

After thirty years of quenching, this senior must have stepped into forty when he stepped into the martial realm. To be able to break through the Void Martial and True Martial realms in a row within ten years, and almost even break through the Earth Martial Realm, it is impossible to rely on the talent of the Lonely Stone Vein alone!

This mental method can be called against the sky!

There are only three simple levels of mental level: superior, medium, and inferior!

Being able to help this senior cultivate to the pinnacle of the Earth Martial Arts is enough to show that even if this mental method is not a superior mental method, it should be the best in the middle spiritual method. Although Thunder has not yet entered the Void Martial Realm, this Thunder Devouring Heart Method cannot be cultivated for the time being. However, I believe that it will soon become a great help for Thunder's cultivation.

In addition, the weird blade that carries these contents is a treasure in itself. This knife is as thin as a cicada's wing, and its thickest point is no more than a piece of paper. The thinnest part of the blade is almost impossible to see with the naked eye if it were not for a little bit of brilliance reflected in the sunlight.

This spirit knife can blow hair and cut hair, cut gold and jade, and is indestructible! It is a medium-grade spiritual weapon - cicada wing spirit knife!

There was no harvest at the auction, and it was a surprise to be able to find a medium-grade spiritual artifact in the stone box. Thunder immediately called the old dragon out again.

"Can I use this artifact?" asked Thunder expectantly.

The old dragon took a closer look, and then said slowly: "This shouldn't be a spirit weapon for spirit masters, but according to my inference, it's not difficult for you to control it." ”

"How?" said Thunder excitedly.

"Spiritual power, in our world, is actually a kind of spiritual power. And with you, it becomes a kind of physical energy. However, there is no essential difference between the two, the source of the strength comes from the soul!" The old dragon paused for a moment before he said again: "And to control this spiritual weapon, you don't need the spiritual power of the spirit master, just use it to engrave your soul imprint on the spirit of the instrument, and you can control this cicada wing spirit knife with spiritual power." ”

"How do you imprint the soul brand?"

"With your current soul level, I'm afraid it's still a little difficult, but I'll help you, old dragon!"

According to the method taught by the old dragon, Thunder probed out his spiritual sense and began to search for the existence of the spirit spirit in the spirit weapon.

The Cicada Wing Spirit Knife trembled slightly, and Thunder finally caught the trace of the machine spirit, but the other party was obviously a little resistant to Thunder's spiritual sense, and was unwilling to give in. It is also the spirit of a medium-grade spiritual weapon, if it is not the realm above the true martial arts, it may not be able to lower it.

"Hey, hey, hey, little thing, if you don't obey again, Lao Tzu will swallow you!" The old dragon's breath poured in at a very timely time. A threat and terror filled with the coercion of the superior immediately shocked the machine spirit and did not dare to move. If the machine spirit was a living person, it must have trembled with horror.

The thunder took the opportunity to pour into his soul imprint and engraved it deeply on the center of the machine spirit.

"Huh~" A torrent merged into the spiritual sense of the thunder, and the various characteristics of the cicada wing spirit knife immediately appeared in the thunder's mind - the cicada wing spirit knife was a thunder spirit weapon.

"Silent, without a trace, as fast as lightning, as sharp as thunder!" a satisfied smile gradually appeared on Thunder's face.

"Go!" Thunder Spirit's thought moved, and he saw a faint flash of electric light in the air.

Immediately, five bowl-thick trees on a line not far away broke and fell from the same height in a "click" sound. The place where the fracture is like a lightning strike, showing a faint charred black.

"Hmm...... Very good!" As soon as the Thunder Spirit thought was received, the Cicada Wing Spirit Knife immediately flashed back and landed in his hand: "This kind of power, presumably the Void Martial Realm's body protection true qi, may not be able to resist it!

A random blow caused a small half of Thunder's soul power to be lost, and with Thunder's current soul level, he could only perform two consecutive sneak attacks of the Cicada Wing Spirit Knife at most. However, with the invincible terrifying power of this move, it is enough to become a killer weapon hidden by Thunder.