Chapter 631: Heavenly Stone
"Hey, this is a fourth-grade 'Du' Immortal Pill.'" Qin Ziling continued to count the pills and was quite surprised to find that one of the bottles actually contained a fourth-grade "Du'e Immortal Pill."
The fourth-grade "Du'e Immortal Pill" is a very precious elixir even in the Jiuxuan Sect. It is even harder to find in the outside world and there is no market for it.
The best "Du'e Xiandan" Qin Ziling has on hand now is only of the third grade.
Firstly, the herbs required to refine the fourth-grade "Du'e Xiandan" had not yet been found, and secondly, the fire dragon did not have the ability to refine the fourth-grade "Du'e Xiandan" at that time.
Now the fire dragon has recovered a lot and is able to refine the fourth-grade "Deliverance Pill".
As for medicinal herbs, with Qin Ziling's current strength, it shouldn't be a problem to find them all.
However, getting a precious fourth-grade "Du'e Xiandan" for free is naturally a good thing.
"What is this?" Qin Ziling put away the fourth-grade "Deliverance Pill" and his eyes were quickly attracted by a huge, dark and cold box.
Qin Ziling opened the big box.
A cold breath of death and decay came to my face.
There were some rare medicinal herbs and some dark pills placed in the box.
It is obvious that these medicinal herbs and pills are not what normal people use to improve their cultivation.
There was also a brocade box in one corner of the big box.
Qin Ziling opened the brocade box, inside of which was a scroll made of exotic animal skin.
Qin Ziling opened the book and his heart couldn't help but tremble slightly.
This scroll records the "Secret Art of the Underworld and Life-Devouring Technique" performed by Yan Gu.
According to the book, this "Secret Art of Life-Devouring in the Underworld" has a total of ten levels. Yan Gu has only cultivated to the third level, and the skills recorded in this book only go up to the fourth level, and there is nothing after the fourth level.
Many of the medicinal herbs and pills in this big black box are things that need to be taken when practicing this secret technique.
Qin Ziling quickly read through the "Secret Art of the Netherworld's Life-Devouring Art" and couldn't help but feel surprised and delighted.
What is shocking is that Yan Gu has such power after only practicing to the third level. If he practices to the fourth level, and the power of death suddenly erupts, he may be able to fight against opponents of higher levels.
That is to say, once Yan Gu cultivates to the fourth level, Yan Gu, a sixth-grade True Immortal, will be able to fight against a seventh-grade True Immortal by performing this secret technique at the cost of his blood, vitality, and lifespan.
It just so happened that he had the means to restrain the secret art of the Netherworld's Life-Devouring Art, and also had a way to conceal the truth, which led to the death of Yan Gu.
If Yan Gu had discovered it earlier, changed his strategy, and used other variations of the "Secret Art of the Underworld Life-Devouring" instead of fighting him to the death, Qin Ziling might not have been able to kill him so easily, and might have had to call in the Fire Dragon.
The Fire Dragon's help would not only be extremely costly, but the most critical thing is that once the Fire Dragon is sent out, if it happens to escape from Yan Gu, it would be a disaster.
So if the Fire Dragon doesn't take action, it's fine. But once it does, Qin Ziling must have 100% confidence in killing the enemy.
And if he cultivates to the fourth level and bursts out with the combat power of a seventh-grade true immortal, Qin Ziling and Yin Ranyue will probably have no choice but to run away again.
There is a huge gap between a sixth-rank True Immortal and a seventh-rank True Immortal.
Even though Yin Ranyue had the Purple Sky Thunder Staff in his hand, he was only a relatively powerful sixth-rank True Immortal and was no match for a seventh-rank True Immortal.
Of course, the higher the level of the "Underworld Life-Devouring Secret Art", the greater the cost of using it.
The good news is that this "Secret Art of Life-Devouring in the Underworld" seems to be a secret art specially tailored for him and the five Hades Immortal Generals.
He comprehended the principles of Yin and Yang, life and death, and cultivated two immortal infants of Yin and Yang, which could transform life into death and death into life. However, the five Hades Immortal Generals were originally dead objects, but they were born with intelligence. Their original power was the power of death.
To perform this secret technique, Yan Gu needs to stimulate it with his own energy and vitality, but the Hades Immortal General can skip this process and directly perform the Hades' killing move.
However, to practice this secret technique, one still needs to spend a lot of time on comprehension and practice, and also needs corresponding medicinal materials and elixirs.
No matter what, Mingxianjiang and Qin Ziling have natural advantages in practicing this secret method, and their progress will definitely be many times faster than Yan Gu.
"What a pity, there are only methods for practicing the first four levels." Qin Ziling closed the "Secret Art of the Underworld Life-Devouring Technique" and felt quite regretful.
Soon, Qin Ziling found another stone that was so dark that it seemed to absorb all the light.
This stone is about the size of a large water tank.
"Tianming Stone!" Qin Ziling couldn't help but be overjoyed.
Tianming Stone, like Chitianxuan Stone, is also a mineral material for refining top-grade immortal artifacts.
However, it is different from the Red Sky Mysterious Stone. The Red Sky Mysterious Stone is often born in the land of Fire and Sun, and is most suitable for refining fire and earth type magic weapons, because fire produces earth.
So after Qin Ziling found the Red Sky Mysterious Stone, he refined it into the Fire Crow Sword and the Wind Thunder Mountain Seal. Both of these magic weapons were upgraded to top-grade immortal artifacts, saving Qin Ziling the trouble of nurturing them for a long time.
To upgrade the grade of a magical tool, the owner of the magical tool can also wash and nourish it with magical power day and night to gradually change its quality, but this is a process of dripping water wearing away a stone, and it is very long.
The Tianming Stone is often born in cold and gloomy places, and is most suitable for refining ice-type and cold and death-type magic weapons.
Yan Gu's Black Prison Demon Blade and White Bone Claw are both rather sinister magic weapons.
Qin Ziling once wanted to refine five immortal weapons for the five Hades Immortal Generals, so Huolong had told him some materials for refining Yinsha death type magic weapons.
"With this Tianming Stone, and by remelting the Black Prison Demon Blade and the White Bone Claw, and adding some more mineral materials, it should be enough to prepare a suitable top-grade immortal weapon for each of the four people and myself." Qin Ziling thought happily.
In addition to this Tianming Stone, Yan Gu also collected several pieces of ores suitable for refining top-grade immortal artifacts, but they were relatively small in size.
After Qin Ziling finished counting the ore, his eyes finally fell on a small black box in the corner.
This black box is made of Tianming Stone.
Qin Ziling opened it and found a tiny bone needle inside with a dark flame burning on the tip of the needle. It was the Netherworld Bone Needle that Yan Gu used to threaten and kill Lei Xiao.
As soon as Qin Ziling's soul got a little closer to the Netherworld Bone Needle, he felt as if he was almost frozen and burned.
"No wonder Yan Gu's speed was so slow when he activated the Netherworld Bone Needle. It turns out that the Netherworld Karma Fire is the exact opposite of the Sun's True Fire. The latter is extremely hot, while the latter is extremely cold. With Yan Gu's cultivation level, he doesn't dare to refine the Netherworld Bone Needle into his body yet. He can only put it in the storage ring. Even when activating it, he has to be careful to avoid getting burned."
Qin Ziling thought to himself and moved the Netherworld Bone Needle out of the storage ring.
After taking out the storage ring, Qin Ziling thought about it, and used the Nether Immortal Infant to release a trace of Nether Death Power to wrap around the Nether Bone Needle, but the Nether Death Power melted like snow as soon as it touched the Nether Bone Needle. He needed to continuously input the Nether Death Power in order to continuously drive the Nether Bone Needle.
"This Netherworld Karma Fire is too cold and overbearing. I cannot control it at will at my current level. But once I can control this Netherworld Bone Needle at will, the power of this magic weapon will be very great." Qin Ziling thought to himself as he put the Netherworld Bone Needle back into the Tianming Stone Box.
He is not able to fully utilize the power of this treasure yet, so he can only put it aside for the time being.
