In view of the instability when Fang had just received the Skeleton Ghost King Zhao Kuo with the Yuan Shen Token, he knew in his heart the real reason why the Blood Immortal Ancestor would be so happy to give this super powerful thug with an innate magic weapon to himself.

"This skeleton ghost king is too strong, even if it is banned and locked in its primordial god body, it is difficult to control it for a long time, and there is a possibility of getting out of control and counterattacking at any time, under the premise of failing to completely control it, it is not so much a super strong helper, but a powerful time bomb that is very likely to distinguish between friend and foe at a critical moment......"

While Chu Yu was secretly thinking to himself, he did not show the slightest expression of disappointment, but instead showed a calm smile on the corner of his mouth, " However, now that the Skeleton Ghost King has changed his master, everything will be different, this Yuan Shen Token is extremely rough refined, and the material is poor, plus Zhao Kuo's own strength is very strong, it is naturally difficult to control him, but if he personally refines a Yuan Shen Token and transfers it into it, although he does not dare to say bluntly that he will definitely be able to control the Skeleton Ghost King, but it is far stronger than the current extremely unstable situation, if he can get the innate thing as a refining material to refine the Yuan Shen Token, he will have a greater grasp, and maybe he can completely subdue Zhao Kuo in one fell swoop。 ”

Thinking of this, Chu Yu's mind began to pass through many superb refining materials that could be used to refine the Yuan Shen Token, considering that it would be done once and for all, after some thought, there was only one refining material in the world that was included in the scope of Chu Yu that could be used as a sacrifice Yuan Shen Token - Taiyin Pole Obsidian.

According to legend, the Taiyin Obsidian Stone is the product of the Yellow Spring at the bottom of the Eighteen Ze of the Netherworld, and it is impossible to say whether this stone belongs to the innate thing, but one thing is for sure, the degree of cherishing of this stone is no less than any kind of refining material that can be found in the world today, and it is even difficult to say whether this thing still exists in the human world.

This stone is made by watering a spring at the bottom of the eighteen Ze Chaos inlays of the Netherworld Thick Earth for thousands of years, and it is attached to the Qi of the Nine Shadows to the Yin, which is the best carrier for the parasitism of ghosts and spirits. Legend has it that the ghost spirit body can practice in this stone for one year to be worthy of the usual hard work of cultivating a Jiazi, and it is also rumored that those who obtain this stone can order all the spiritual cultivation below the level of the ghost king, and can use this stone to avoid the misfortune of the Yin Si soul, beyond life and death, and get out of the six reincarnations.

According to legend, Peng Zu, the great-great-grandson of the emperor, was the first person in the human world who was fortunate enough to get this Taiyin obsidian, although he did not cultivate the true Tao, and was no different from ordinary people, but he lived for 800 years by virtue of the effect of this stone.

He lost forty-nine wives and fifty-four sons in his life, and because he was immortal but his talent was dull, he was never able to get a glimpse of the way of heaven, resulting in countless sorrows. It wasn't until he was physically and mentally exhausted that Peng Zu discarded the Taiyin Obsidian passed down by the Emperor Taizu by himself, and then he detained his soul for Yin Si and entered the underworld, he was really tired of it, otherwise, as long as the Taiyin Obsidian was still on him for a day. will be able to transcend life and death.

"Go and find the piece of Taicathode obsidian that Peng Zu discarded back then...... It's harder to be headless than looking for a needle in a haystack...... Rather than this, it is better to let some go, and the next time the dark and thick soil is eighteen Ze, and this stone is extracted from the eternal yellow spring. ”

Obviously, Chu Yu had a great interest in completely controlling the Skeleton Ghost King Zhao Kuo. In order to get his hands on the Taiyin Obsidian, even the idea of going deep into the Nine Secluded Underground Mansion has arisen.

But he said that he was nine times high that day, and he was poor and poor. The ground is eighteen thick. The lower part is into the Yellow Spring. After the heavens were opened, the clear qi rose to derive the stars of Zhoutian. Above the nine heavens, the chaotic inlay place, there is a gas neck, its shape is just like a gourd cover, the pure qi and chaos are entangled in the meantime, endlessly, the name is Biluo. And between the shock and awe, the turbidity is heavy and gathers the dark and thick earth into eighteen Ze. Eighteen Ze bottom chaos junction, there is a spring, just like the gourd pedicle, turbidity and chaos boiling in the meantime, gurgling forever, the name is called Yellow Spring.

The location of the Yellow Spring is where the Taiyin Obsidian is generated, and it is also the place where the Nine Shadows are deepest, much deeper than the Nine Shades of Blood Sea. After the eighteen Ze, there are called eighteen hells, which are held by Yama, and the eighteen layers of hell are ghosts and gods. On the construction of Fengdu City, collectively referred to as the underworld. It is the place where the six realms of life and death are controlled, and it is also the place where human spirits and livestock are reincarnated.

For all of the above, as a Grandmaster who had already cultivated the Truth Land twice, Chu Yu was naturally no stranger to it, and even he knew a lot of hidden things related to the Cultivator and the Underworld.

You must know that Chu Yu used to be a generation of grandmasters of the Buddha, Dao, and Demon systems, and many of those famous big devils often secretly went to the underworld to steal some refining materials that could not be obtained in the human world in order to cultivate magic skills or refine powerful magic treasures, and handed over these refining materials that were only possible in the underworld to Chu Yu to help refine magic weapons.

For example, the Nine Shadows Blood Pool in the Tianwuling Hundred Mang Heavenly Monarch Demon Cave is that he spent a hundred years sneaking into the underworld more than a thousand times, taking a scoop of the water of the Nine Shadows Blood Sea each time, and accumulating a pool of Nine Shadows Blood Water over the years that can help his cultivation get twice the result with half the effort.

Let's say that those demon cultivators who took refining materials that Chu Yu had never seen before asked him to help refine magic weapons, under the questioning of Chu Yu, who has always been very curious, naturally knew everything, speaking of which, if it weren't for the fact that Chu Yu had never needed the unique refining materials of the underworld in the past, so that he really didn't have to sneak into the underworld, I'm afraid he would have followed the trend of demon cultivation and became a veteran of the underworld's smugglers.

With a decision in his heart, Chu Yu first collected the token of Zhao Kuoyuan's divine land into the Nine Python Ning Bi Bracelet, and then looked at the wolf-like Cangmang Mountain under his feet, and couldn't help but sigh in his heart.

"No matter, first open the secret vault of the Treasure Refining Pavilion, take out all the treasures that were accumulated back then, and then after participating in the ceremony of Li Rong taking over as the head of Que Wuzong, it is time to visit the old devil who has not been born for a long time, if you want to sneak into the underworld to steal things, it is right to ask him to help guide the way. ”

After making up his mind, Chu Yu turned into a rainbow of light, and went straight to a special position of the main peak of Cangmang, before he was about to hit the mountain wall, he hit the secret seal of the Treasure Refining Pavilion with both hands, and the mountain wall that was integrated with the mountain body was sunken into a large piece in an instant, revealing a golden light shining on the road, which actually led directly into the belly of the mountain.