Zhang Mo didn't find anything else in the storage bag surnamed Chen's demon cultivator except for some lower-grade spirit stones, and the things that the young Taoist priest put in were also lower-grade spirit stones, and there were no other exercises and magic weapons.

However, if he can get a magic weapon and sign a soul contract with the soul of a late-stage Jindan monk, Zhang Mo will also make a lot of money.

This time, the income of the spirit stone actually made Zhang Mo's net worth exceed one million, which was also an unexpected gain.

Especially the Ten Thousand Poisons True Sutra, because Zhang Mo himself is a pure yang body, and his body contains pure yang power that ordinary people can't reach, so cultivating the Ten Thousand Poisons True Scripture doesn't have the side effects of the Poison Venerable at that time, but now he has to think about finding that kind of strange poison as an auxiliary to his formation.

However, this strange poison is not the more poisonous the better, because at the beginning, the Ten Thousand Poison True Scripture said that the formation engraving is more difficult and more powerful at the same time, but the formation at the beginning cannot use the strange poison that is too high, otherwise Zhang Mo, who is the eye of the formation, will not be able to bear it, and he will fall down first before he hurts the enemy.

Of course, the lower the better, the lower the ranking, the strange poison will make it difficult for Zhang Mo's strange poison formation to improve the level in the future, so this degree is the most difficult to grasp.

However, Zhang Mo's poisonous venerable predecessor is here, so naturally there is no need to worry about this aspect.

The Poison Venerable had already helped Zhang Mo choose the strange poison needed for his first Strange Poison Formation, the arrow poison wood.

This is a plant-based poison, and if the wound of an immortal cultivator is invaded by this venom, it will cause muscle relaxation, blood clotting, and heart beating slowdown, and finally cause the heart to stop beating and die.

Moreover, once the juice of the arrow poison wood splashed into the eyes, the immortal cultivators below the Jindan stage were directly blinded, and the domineering nature of its poison could be seen.

It's just that this kind of tree grows in the southern Xinjiang of the Great Qin Kingdom, and Zhang Mo needs a huge amount, and at the same time, it also needs to be harvested and used, so Zhang Mo has to go to southern Xinjiang for this reason.

Of course, all of this must be done with Zhang Mo being able to save his life from under the hands of the green-robed old man.

Therefore, after Zhang Mo gave the Poison Venerable a flower on the other side, he began to devote himself to the study of Xuanyin Duel, which is a demonic exercise.

The Demon Dao pays attention to quick success, and at the same time, he also likes to quickly improve his cultivation.

This Xuanyin Determination is a technique that can quickly transform the Yin Qi between heaven and earth into the spiritual energy in the body, and it also comes with some mantras for manipulating Yin Qi.

Although the speed of directly converting Yin Qi into Spiritual Qi is much faster than absorbing Heaven and Earth Spiritual Qi and transforming the Spiritual Qi in the body, the spiritual energy transformed in this way is easy to be mixed with Yin Qi, which will eventually make the Yin Qi in the cultivator's body excessive.

If there is an imbalance of yin and yang in the body, there will eventually be big problems.

Although Zhang Mo had some eyes on the cultivation speed of Xuanyin Decision, he no longer envied the side effects of cultivation when he thought of it.

Of course, Zhang Mo only needed to cultivate to the first layer of the Xuanyin Duel, which had little impact on him.

On the contrary, some of the formulas that urge yin qi in the Xuanyin decision are quite practical, and Zhang Mo is a blessing in disguise, and he unceremoniously began to study these formulas.

There are three of these mantras, one is to condense yin into armor, one is to condense yin into a device, and the last one is to condense yin into thunder.

With these three formulas, you can condense yin qi into magic armor, and you can also condense some weapons to fight, as for the final condensation of yin into thunder, it is to refine yin fire thunder beads.

However, this mantra for refining the Yin Fire Thunder Bead can only refine the lower-grade Yin Fire Thunder Bead, but even if it is a low-grade Yin Fire Thunder Bead, it is enough for Zhang Mo, a person who has the strength of the third layer of qi.

Then Zhang Mo sat down cross-legged and began to try to transform yin qi.

Reciting the mantra silently in his heart, Zhang Mo's body was like a magnet that inhaled all the black yin qi around him.

However, there was a lot of yin qi in the Yin Soul Valley, and as soon as Zhang Mo finished absorbing it, the surrounding yin qi was immediately replenished.

At this time, Zhang Mo also began to compress the yin qi inhaled into his body into the dantian according to the method of Xuanyin Decision, and then began to condense the yin qi little by little, after all the black yin qi was incorporated into Zhang Mo's dantian, Zhang Mo pinched a strange seal in his hand.

A mysterious black rune suddenly appeared in his dantian, and then these runes began to burrow into the yin qi in the dantian, and then these yin qi began to boil violently, and then the color of the yin qi began to fade little by little, and after about half an hour, Zhang Mo's nostrils spewed out two turbid gases, and at the same time recovered from the state of meditation.

The aura vortex in the dantian was obviously a little thicker, this Xuanyin was really good, but it was too domineering, it was easy to go mad, and it was not as stable as the righteous path after the level was raised.

Zhang Mo then went directly out of the stone room to find the green-robed old man, and he also wanted to take the opportunity to ask some questions about the refining of the Yin Fire Thunder Bead.

Because Zhang Mo's stone room was next to the green-robed old man, Zhang Mo didn't take a few steps before he saw the green-robed old man sitting cross-legged on the stone pier.

"If you have anything to ask, just say it. The green-robed old man said directly without opening his eyes.

"I'd like to ask you about the refining techniques of the Yin Fire Thunder Bead. Zhang Mo said respectfully, after all, if you ask someone else, you still need the attitude you should have.

"I'll just demonstrate it once, you have to take a closer look!" The green-robed old man stretched out his right hand to support it, and a black cloud of yin qi immediately began to rotate on his palm.

Then the green-robed old man pinched the seal with his left hand, and the yin qi in his right hand began to rotate rapidly, and at the same time, the surrounding yin qi also began to be absorbed by the rotating yin qi, and the adsorption of yin qi has not stopped for a full time of tea.

In the end, the yin qi in the palm of the green-robed old man's right hand had become pitch-black as ink, condensed like substance, and at this time, the green-robed old man began to inject mysterious runes into the yin qi.

Half an hour later, the infusion of the runes stopped.

Airplanes!

At the last moment, just after the green-robed old man punched in the last rune, the Yin Qi that had become very condensed floated up and let out a humming sound, finally forming a round Yin Fire Thunder Bead.

"Okay, this Yin Fire Thunder Bead will be given to you for enlightenment. The green-robed old man casually flicked the Yin Fire Thunder Bead that had just been refined to Zhang Mo and said: "The refining runes and seals are all on the Xuanyin Decision I gave you, and when you give me the pure Yin Qi in your body, I can give you the refining method of the medium-grade Yin Fire Thunder Bead." ”

"Thank you for your advice. Zhang Mo caught the Yin Fire Thunder Bead and put it in the storage bag and said. "The juniors took their leave first. ”

"There you go. The green-robed old man closed his eyes again and began to meditate and cultivate.

Zhang Mo also took the opportunity to retreat and returned to his stone room.

Then he also began to refine the Yin Fire Thunder Bead, but at the beginning, he couldn't even condense Yin Qi in the palm of his hand, but as time passed, Zhang Mo gradually began to master the trick.

Time flies, and it has been half a year since Zhang Mo entered the Yin Soul Valley.

During this period, Zhang Mo refined dozens of Yin Fire Thunder Beads, and at the same time cultivated the first layer of the Xuanyin Duel.

At the same time, during this period, Zhang Mo also promoted his cultivation to the fifth level of Qi training, which of course has the credit of Xuanyin Decision, and it is also related to the fact that Zhang Mo has reached the Jindan stage of cultivation in his previous life, plus there are two Jindan stage monks in the green robe and the poison venerable, and it is difficult for him to practice fast or not.

If an ordinary immortal cultivator wants to improve the strength of the first layer during the Qi refining period, it will take more than a year or even two years, and the more he retreats from the Qi cultivation period, the more difficult it will be to upgrade, because what is needed at that time is not quantitative change, but qualitative change.

It also takes a certain amount of opportunity and luck to break through to the foundation building period during the Qi cultivation period, and some people are even stuck in the realm of the eighteenth layer of Qi training, which is very common in the immortal cultivation world, and many people run out of life in this way and die helplessly.

Zhang Mo didn't have too many surprises, what he was worried about now was whether he should hand over his pure yin qi to the old man in the green robe.

Regarding the transaction between Zhang Mo and the green-robed old man, the Poison Venerable, who is a demon cultivator, has a negative attitude, he thinks that the green-robed old man must have other conspiracies, so the Poison Venerable suggests that Zhang Mo take the opportunity to escape.

Zhang Mo didn't take the Poison Venerable's suggestion, after all, with his current strength, the possibility of escaping in front of a Jindan stage monk was almost zero.

However, because there was a medium-grade Yin Fire Thunder Bead in the storage bag of the Demon Cultivator surnamed Chen, coupled with the dozens of low-grade Yin Fire Thunder Beads that had been painstakingly refined during these days, Zhang Mo's confidence was also much stronger, after all, even the monks of the Jindan period were subjected to so many Yin Fire Thunder Beads.

Even the green-robed old man didn't think that Zhang Mo could refine so many Yin Fire Thunder Beads, but Zhang Mo Leng had refined them.

Refining the Yin Fire Thunder Beads is very time-consuming, especially for ordinary people who have cultivated in the Qi refining period, but Zhang Mo is not ordinary, so he can also secretly refine dozens of low-grade Yin Fire Thunder Beads.

After gaining confidence, Zhang Mo decided to try it out with the old man in the green robe, he still had to go back to Wuling County, and there were still many things to do.

After the Yin Fire Thunder Bead was hidden on his body, Zhang Mo went to find the green-robed old man.

It's just that when Zhang Mo just walked to the door of the stone room, there was a sudden loud noise from the entire cave, accompanied by a violent shaking, and the earth shook the mountains, as if the earth dragon had turned over.

What's going on? Zhang Mo was secretly shocked in his heart.

Then he quickened his pace and walked out of the stone room, the old man in the green robe did not sit on the stone pier to meditate, there was a burst of dragon groans outside the cave, and at the same time there were various explosions and thunderous sounds, obviously someone was fighting at the door of the cave.

After hesitating for a moment, Zhang Mo decided to go out and have a look.

After cautiously leaving the cave, Zhang Mo suddenly saw the green-robed old man stepping on a strange-shaped magic weapon and opposing a black-covered dragon.

This dragon is about ten zhang long, the body is enough for two adults to hug, the scales on the body are dark and metallic, the head has horns, the abdomen has three claws, the claw tips are extremely sharp, a pair of dragon eyes are staring, the pupils are erect like snakes, and when he opens his mouth, he spits out a jet black dragon breath and rushes straight at the old man in the green robe.

The green-robed old man drove the magic weapon to dodge immediately, and this dragon breath sprayed directly on the rock above the green-robed old man's cave, instantly devouring that piece of rock, leaving a black hole the size of a head, it seems that the dragon breath spit out is not small.