Chapter 204: The Immovable Underworld King

"Senior!"

As soon as Zhang Nuo's mind cleared, he immediately wanted to stand up; he understood in his heart that he was still alive, and that he had won this clash with the "Hell Butterfly"!

Just as Zhang Nuo was about to turn his head, Chunyangzi's expression changed drastically; he flashed away as if bitten by a snake, quickly retreated out of the Stone Chamber, and with a wave of his hand, closed the stone door!

Feeling a wave of dizziness in his head, Zhang Nuo was startled when he saw Chunyangzi's actions; he repeatedly examined his own body with blurry eyes, but could not find anything wrong at all.

"Senior! What is wrong with you?"

Swaying as he stood up, Zhang Nuo walked to the front of the stone door, where a butterfly shape condensed from a wisp of Yin Qi at the center of his brow was flickering in and out of existence, as if it would dissipate if blown by the wind.

"You brat, you almost killed this old man just now!"

Facing the stone door, Chunyangzi let out a long breath, but the look of lingering fear remained on his face!

"Why do you say that?"

Although Zhang Nuo's mind was not yet fully clear, he heard this sentence from Chunyangzi clearly; he hadn't done anything just now, so how could he have killed him?

"You have just refined the 'Hell Butterfly' and cannot control it well yet. Before you are proficient in manipulating it, just stay in the Stone Chamber! Otherwise, this Remnant Soul of mine cannot withstand it!"

Shaking his head with a bitter smile, Zhang Nuo couldn't help but laugh; it turned out that when Chunyangzi was waking him up just now, he had been accidentally nearly injured by the "Hell Butterfly".

"Understood, Senior!"

Gently pounding his head with his hand, Zhang Nuo wanted to recall as much of the process of refining the "Hell Butterfly" as possible, but his brain felt like paste right now, and many things were only recalled in fragments.

However, the black butterfly condensed from Yin Qi at the center of his brow was clearly visible; he gently swept his hand across his brow, and the Yin Qi was dispersed by the impact, but after only a moment, the black butterfly appeared again.

A look of slight surprise appeared on his face, and Zhang Nuo became a bit anxious; if this butterfly shape formed by Yin Qi stayed at the center of his brow forever, it would be quite troublesome.

Sitting cross-legged on the ground, he turned his focus inward and saw that behind the center of his brow, a black, eerie butterfly was staying quietly inside his body.

It showed no signs of restlessness, but on the surface of the butterfly, a layer of crimson flames was slowly burning, making it look even more bizarre!

"Red Glow Fire!"

Zhang Nuo was stunned; he had not expected that after successfully refining the "Hell Butterfly", the Red Glow Fire would actually fuse with the "Hell Butterfly" as well. Looking at the two, it seemed they had resonated in some way and were even complementing each other!

With a slight movement of his Divine Sense, the "Hell Butterfly" trembled gently within his body, then flapped its wings and flew out from the center of his brow in a rush, stopping more than three feet in front of Zhang Nuo, its entire body wrapped in crimson flames, looking extremely beautiful.

Zhang Nuo beckoned with one hand, and the black butterfly slowly landed on his palm; its gently flapping wings left long trails of red fire every time they swept through the air.

"Little guy! You've really put me through a lot of suffering!"

Stroking the surface of the "Hell Butterfly" with his other hand, Zhang Nuo said with a smile; this fusion with the "Hell Butterfly" had consumed nearly eight or nine tenths of his soul power, and it would be impossible to recover without a dozen years of cultivation.

Soul power is not like the physical body; it requires long-term self-repair. Although he still felt a bit dizzy, the joy of fusing with the "Hell Butterfly" made Zhang Nuo forget the previous pain!

The black "Hell Butterfly" twisted its head, and the two antennae on top of its head collided with each other. At this moment, its voice reached Zhang Nuo's mind!

"Master!"

Zhang Nuo let out a loud laugh; these two words coming through the mental connection with the "Hell Butterfly" were enough to show that his fusion was very successful, though having just fused with it, he could not yet obtain more information!

Raising his palm slightly, a flash of light appeared in Zhang Nuo's eyes, and the "Hell Butterfly" immediately flew out like lightning, vanishing into the center of his brow in an instant.

Forming strange hand seals with both hands, Zhang Nuo proceeded with further fusion! Two months later, the Stone Chamber was quiet; apart from the sound of Zhang Nuo's breathing, there were no other sounds.

The black butterfly shadow previously condensed from Yin Qi at the center of his brow had long since disappeared. Slowly standing up, Zhang Nuo walked out of the door of the Stone Chamber.

At this time, he saw Chunyangzi standing dozens of feet away, looking at Zhang Nuo with suspicion in his eyes.

"Brat Zhang, can you control it freely now?"

Once bitten, twice shy; Chunyangzi had learned his lesson this time, fearing another accident like before.

"Senior can rest assured!"

Looking at Chunyangzi with a light smile, Zhang Nuo said with full confidence.

Hearing these words, Chunyangzi slowly approached Zhang Nuo; he saw that Zhang Nuo's appearance was the same as before, with no visible differences, only a faint, gloomy aura lingering on his body.

"It seems this fusion was very successful!"

Nodding with satisfaction, Chunyangzi was also overjoyed in his heart.

"It's not just as simple as success!"

Zhang Nuo gave a mysterious smile, then narrowed his eyes, and a black butterfly wrapped in crimson flames flew out from the center of his brow.

"Look, Senior! The crimson flames on its surface are exactly the Red Glow Fire; even I didn't expect that the two could fuse together!"

As soon as the "Hell Butterfly" appeared, Chunyangzi almost ran away again, but seeing it just floating quietly in mid-air, his heart was put at ease; it seemed Zhang Nuo had already tamed it, and without his command, it would not attack him easily.

With his gaze fixed on the "Hell Butterfly", Chunyangzi could not stop praising it; even he had not expected this mutation of the "Hell Butterfly".

"It seems you were right to forcibly refine the Red Glow Fire into your body back then; if not for this fire, you would likely have perished long ago! This is the first time I have seen a mutated 'Hell Butterfly'; it seems my knowledge about it is still very limited!"

Regarding the "Hell Butterfly" of the Underworld, Chunyangzi had only read about it in some classics and did not understand it too well; as for the matter of mutation, it was unheard of!

With a movement of his Divine Sense, the "Hell Butterfly" flashed and vanished into the center of Zhang Nuo's brow.

"Regardless, the success of this fusion will be a great help to me; I am going to study the text in the Black Book now!"

Everything done before was to understand the contents of the Underworld Ancient Book; Zhang Nuo had been waiting for this day for a long time, and now that everything was ready, he was even more impatient.

Chunyangzi nodded in agreement, and after the two sat down in the main hall of the Cave Abode, Zhang Nuo took out the Black Book from his Storage Bag and gently opened the first page; he saw only a few large, flowing characters written on it, but after studying them carefully, he still did not understand their meaning.

With a slight frown, the "Hell Butterfly" flew out from the center of his brow, and closing his eyes, Zhang Nuo communicated with it solely through their mental connection.

The newly appeared "Hell Butterfly", upon seeing the writing on the Black Book, first had its eyes brighten slightly, then began to hum in a low voice; Chunyangzi, standing to the side, could not understand what the butterfly was calling, but Zhang Nuo's expression became increasingly grave.

After about the time it takes for an incense stick to burn, he gently closed the Black Book, retracted the "Hell Butterfly", and after opening his eyes, Zhang Nuo looked at Chunyangzi with excitement:

"Senior! The things recorded in this book are truly no ordinary items!"

In fact, even if Zhang Nuo didn't say it, Chunyangzi could tell from his expression.

"What is it?"

"It is a Body Refining technique! Judging by the time, it must be very ancient!"

Stroking the Black Book with one hand as if it were some great treasure, Zhang Nuo's joy was evident!

"A Body Refining technique?"

Chunyangzi was somewhat disappointed; he did not approve of Zhang Nuo practicing Dharma-Body Dual Cultivation, as this would delay his overall cultivation; after all, a person's energy is limited, and focusing on one thing means neglecting the other—gaining one thing while losing another!

"What is its name?"

Lowering his head in contemplation, it took Chunyangzi a long while before he slowly asked this.

"It is called 'Immovable Underworld King'!"

The moment these four words left Zhang Nuo's mouth, Chunyangzi's expression changed abruptly, and he stared at that big black book in disbelief! Zhang Nuo felt somewhat confused; why did Chunyangzi show such an expression upon hearing the name of the cultivation technique?

"The Hell Butterfly cannot fully understand the contents of the book either; it needs time to comprehend them, but the cultivation methods for the first few levels are no problem!"

Seeing that Chunyangzi remained silent, Zhang Nuo continued.

"Kid Zhang, I don't know whether to say you are lucky or that your fortune is poor! I have heard of the 'Immovable Underworld King' technique before, but as far as I know, no one in the Underworld has ever been able to cultivate it to completion!"

Hearing this, the face that had just been happy for Zhang Nuo suddenly turned dim. What Chunyangzi said could not be wrong; he was knowledgeable and experienced, and since such legends existed even in the Immortal World, he believed there must be a basis for them!

With a solemn gaze, Zhang Nuo looked at the big book in his hands again, feeling very unsettled inside. Ever since his Foundation Establishment, he had been practicing the 'Shangqing Sword Art', but the sword art was a fragmented piece, and whether it could be cultivated to completion remained an unknown!

Later, he obtained the Body Refining technique for the Red Glow Fire, but who would have thought it was another half-finished technique that could only be cultivated to the Foundation Establishment Stage? Now, after risking his life to obtain the 'Immovable Underworld King' technique, although it was not a fragmented piece, no one had ever cultivated it to completion.

One must know that the essence of a cultivation technique often lies at the very end. For someone like Zhang Nuo, not having a single technique cultivated to completion would lead to a very tragic result; it was like a person eating an orange, having spent great effort to finally peel the skin, only to not get to eat the fruit inside!

"Fate plays tricks on people! Truly, fate plays tricks on people!"

Zhang Nuo let out a long sigh, his eyes filled with a look of disappointment.

"Kid Zhang, there is no need to be melancholy. Even though 'Immovable Underworld King' cannot be cultivated to completion, just the first half of the technique is already very terrifying! It is not a bad thing for you!"

Seeing him like this, Chunyangzi found it difficult to continue discouraging him, so he spoke words of persuasion one after another.

"Senior, there is no need to comfort me!"

With a bitter smile, Zhang Nuo interrupted Chunyangzi's words, his expression showing a slight dejection as he stroked the big book in his hands!