"Hey, why is there a trace of weak aura here?" Cheng Qian, who was wandering around the room alone, suddenly frowned, as if he felt something, and his figure swept out, and he asked in some surprise.

"Hehe, Daoist friends don't know, when the old man went to the immortal cemetery, he didn't just bring out the iron box. I also found a small spiritual spring by accident, it is indeed rare to be able to give birth to a spiritual spring in the underworld, the old man was happy to see the hunting, so he spent a lot of precious materials to transfer the spiritual spring intact, and set it in my Dongting Mountain Range, so the Taoist friends will feel the slightest aura!"

Cheng Qian was stunned after hearing this, and asked with interest: "Cheng has never heard of a spiritual spring in the underworld, this immortal tomb is really strange, it can actually derive a spiritual spring?"

"Cheng Daoyou doesn't know, you haven't been to the Immortal Tomb, it is full of all kinds of aura, yin and demonic energy, it is a very strange place, and the old man is also confused about this, but this spiritual spring can be brought out of the cemetery, and it is also a chance. ”

"This spiritual spring may not be anything in the spirit world, but it is a rare treasure in the underworld, and with the spiritual energy, you can grow spiritual grass in other interfaces. The old man was a disciple of the Medicine King Valley before his death, and the arrival of this spiritual spring is tantamount to sending charcoal in the snow. The withered leaf fierce spirit seemed to be afraid that the explanation would not be detailed, so he didn't wait for Cheng Qian to open his mouth and continue.

"There is such a thing, this is really beyond my expectations, so it seems that there should be a lot of spiritual grass in the world planted in the hands of Daoyou, right?" Cheng Qian had a flash of inspiration and couldn't help asking.

"Hehe, it's not as exaggerated as Daoist friends say, there are spiritual grasses but not many, after all, the seeds of these heaven and earth spiritual objects are also difficult to find in the underworld. The withered leaf fierce spirit touched his beard, laughed strangely and said: "The reason why the old man will promise Daoyou to make alchemy for you is precisely because there are several flavors of spiritual grass with elixir. ”

Cheng Qian was overjoyed when he heard this, and immediately said, "So to speak." Daoist friends can refine the Tenglong Pill?"

"Although these spirit grasses are there, they are only more than seven hundred years old, but they also last less than a hundred years of alchemy, and this Tenglong Pill can only be refined for more than ten years before the spirit grass will be exhausted, if you want to wait for the next batch of spirit grass to grow and form, it will take at least three or five hundred years!"

Cheng Qian, the other party's words, naturally understood that it was indeed not easy to grow these spirit grasses at the interface of the underworld, which did not have the aura of heaven and earth, and wanted him to refine the Tenglong Pill for a hundred years. It is reasonable that this spirit grass is not old enough, Cheng Qian didn't say anything, and with a flash of inspiration in his hand, a spirit grass appeared in his hand.

"It doesn't matter, Cheng Mou also has a lot of spirit grass here, and he has done it before, most of the spirit pill materials come out from now, and these are naturally prepared!" Cheng Qian said quietly, and the spirit grass in his hand was checked.

Seeing this, the eyes of the dead leaf fierce spirit lit up. He didn't seem to hear Cheng Qian say anything, and shouted directly: "It's actually a dragon grass that is more than five thousand years old, this is an unattainable thing, even in the spirit world, it is extremely rare." Where did Daoist friends come from?"

In the underworld, where there is no grass, it is extremely rare to find a spirit grass that is more than a hundred years old, but Cheng Qian casually took out a thousand years old spirit object, so how could he not be surprised.

Seeing this, Cheng Qian's face sank. Looking at the dead leaf fierce spirit with some unkindness, he said angrily: "Where did this spirit grass come from, it's not something that Daoists should worry about, right?"

The dead leaf fierce spirit blushed when he heard this. Suddenly realized with a hint of apology and said: "I just saw such a good spirit grass in the next place, and I am a little out of shape, I hope that Daoist friends don't mind!"

He was originally born in the Medicine King Valley, and his enthusiasm for the Heaven and Earth Spirit Grass was comparable to that of a generation of medicine idiots. Cheng Qian also understood this very well, but he was still a little dissatisfied with his abrupt Cheng Qian, and said with an unchanged expression: "Daoist friends only need to do what they need to do, and the Heavenly Punishment Thunder Bead will naturally be less than one of you, if you can refine the best elixir, Cheng will naturally double the reward!"

"Is this true?" the Withered Leaf Fierce Spirit asked in disbelief as he overjoyed when he heard this, leaving the embarrassment behind him.

"As for whether it's true or not, it depends on whether Daoyou can satisfy Cheng!" Cheng Qian said indifferently, and didn't seem to want to say anything more.

"Then immediately start alchemy, there are no other ghost servants in the lower mansion, if the Taoist friends do not dislike it, then stay here, if there is any inconsiderate hospitality, it is good not to be surprised!" The withered leaf fierce spirit was a little impatient, this kind of impatience was not aimed at the punishment of the thunder bead that day, but the spirit grass in front of him that was more than a thousand years old, as a disciple of the Medicine King Valley, with such a year of spirit grass refining, he was naturally overjoyed.

"It's okay, Cheng Mou can just stay here by himself, you don't need to blame yourself!" Cheng Qian did whatever he wanted, but someone would feel uncomfortable entertaining, and he also very much agreed with the arrangement of the dead leaf and fierce spirit.

Next, the two chatted a few words, and the wilted leaf fierce spirit also did his best to be a landlord, and arranged two caves for Cheng Qian and Lan Die, and then said goodbye to alchemy.

When this guy entered the alchemy room, Cheng Qian was surprised for a long time, because there was still a fire vein in the center of the earth in this cave, and it was absolutely rare for the underworld to be able to appear in this thing.

For this guy's alchemy, Cheng Qian also had a great interest. Originally, I was still worried about whether the Yin Fire of Ghost Cultivation could really be alchemy, but now that there is the help of the Earth's Core Fire Vein, these worries are completely gone, and they are replaced by a look of interest.

After the withered leaf fierce spirit started alchemy, Cheng Qian was also idle in his cave mansion, and he was really up in the cave mansion alone, and the purpose of this trip to the underworld was almost done, since he had promised Mi Mi Er to let her come to the underworld, he naturally had to start preparing for the teleportation array in the outer realm.

However, this formation, although it is recorded in Xuan Zhen's experience, even this formation master Xuan Zhen has never completed the arrangement, this kind of boundary teleportation array, the required heaven and earth materials are an astronomical amount, with Cheng Qian's current financial resources, it is really impossible to complete the arrangement.

Three months later, Cheng Qian flew out of the Dongting Mountains on his own, and after galloping all the way, he found an extremely hidden canyon, which was close to the River Styx, and it was extremely rare to travel to and from ghost cultivation.

Most of the territory of the Four Abyss Extreme Prefecture was occupied by the Demon Clan, and even the Styx Water Tribes did not mean to let go, so the entire Four Abyss Extreme Prefecture became sparsely populated.

Cheng Qian was extremely satisfied with this, and cautiously checked within a radius of 10,000 miles in the canyon, and saw that there was really no trace of ghosts, so Cheng Qian dug a cave here with peace of mind.

This cave is not an ordinary cave, the cave is 100 zhang high and dozens of zhang wide, which is equivalent to a large square.

Looking at the excavated cave, Cheng Qian was also very satisfied, and arranged a few compound concealment formations, so he was completely relieved.

Standing in the huge cave, Cheng Qian palmed his palm, and a jade sharp cone appeared in his hand, which was an indispensable array pen for carving formation runes.

Checking the array pen in his hand, Cheng Qian took a deep breath, the mana in his body urged, and the array pen in his hand was full of spiritual light, and a 'boom' roar rose to the sky, and a series of spiritual light formed strange lines with the void winding and flipping.

For a while, the aura was rippling, the pen walked away from the dragon and snake, and the obscure and complicated rune imprints were engraved on the stone wall of the cave and the ceiling of the ground.

However, in three hours, half of the cave mansion was engraved with a lot of runes, and Cheng Qian's face was pale and sweating profusely!

It was the first time for him to arrange this kind of formation, not to arrange the array flags and array plates that had already been refined, but to create something out of nothing, and to draw formation runes one by one in a place without aura, which was the mastery of the formation mage.

In the past three months, Cheng Qian has been working day and night to comprehend the profound experience, and has fully understood the evolution and origin of the formation.

The arrangement of the way of the formation is not only limited to the array flag and the array plate, all the things in heaven and earth can be transformed into the formation eye.

Mountains and rivers can be the eyes of the formation, the stars in the sky can be the eyes of the formation, and people can also be part of the formation.

The way of the formation is broad and profound, when he first came into contact with this Xuanzhen experience, he didn't feel very profound, and now he has reached the stage of transformation of the gods, and he has re-comprehended Xuanxin's experience, and he has a sense of experience, and he is also appreciating it in his heart, this Xuanzhen is really worthy of being a genius formation mage.

The sun and the moon turn the flag and the stars into eyes,

Mountains and rivers are made of wood for the spirit!

Demons and monsters are exhausted,

Heaven and earth can be transformed into ten phalanxes!

Cheng Qian can clearly feel that everything in heaven and earth can become a formation, and there is no need for any medium at all, this is a lesson left by Xuan Zhen, but even Xuan Zhen sighed to himself, he did not complete such a big array, and he never used heaven and earth to set up the formation, because his cultivation was not enough to understand the true meaning of the origin.

But with his strength in his infancy, he can actually comprehend heaven and earth, and can realize that all things in heaven and earth form their own formations, this kind of talent is really unprecedented and unprecedented.

With Xuan Zhen's experience, combined with Cheng Qian's cultivation in the Transformation Period, now he is just going straight to rely on mountains and rivers to set up the formation, the real origin formation does not need any heaven and earth materials at all, and the world is a large formation!

In the formation of the world, there are all kinds of people, demons, ghosts, and demons. It's all part of the formation.

Now although Cheng Qian is not an immortal, he has already realized the true meaning of heaven and earth, and the way of heaven and earth is a shortcut to comprehend heaven and earth.

The nine spirits are one, and the chaotic aura derived from the spiritual power of the nine attributes in the body makes Cheng Qian feel a trace of the origin, which is tantamount to opening a door of heaven and earth in his heart, this door is opened, although Cheng Qian doesn't know what it feels like, but there will always be a trace of confidence in his heart. (To be continued......)