The Immortal Physician's Transmigration: Miraculous Rejuvenation

Following the clues, Ye Yuanchen and his group identified several ancient ruins that might be related to the rebirth of the Dark Night Demon Lord. They knew that the secrets hidden in these ruins might be the key to completely ending the threat of darkness, so they embarked on a journey of exploration without hesitation.

First and foremost was a ruin located deep in the desert. This desert was ravaged by sandstorms, and the scorching sun relentlessly baked the earth, forcing anyone entering to endure not only the sweltering heat but also the ever-present danger of sandstorms. Ye Yuanchen and the others used their immortal techniques to form a spiritual energy shield around their bodies to resist the onslaught of the sandstorms, while simultaneously increasing their speed as they moved towards the ruins.

When they finally arrived at the entrance to the ruins, a massive stone gate stood before them. The gate was covered with various mysterious runes and patterns, emanating a faint dark aura that resonated with the surrounding environment, as if telling a story of a dark past. Ye Yuanchen stepped forward to carefully study the runes on the gate. He discovered similarities to those he had seen in other dark ruins, yet subtle differences, suggesting a more ancient and hidden system of dark runes.

“These runes are extremely complex and contain powerful dark energy. We must be careful not to trigger any traps within them,” Ye Yuanchen said solemnly, his eyes revealing a hint of vigilance and focus.

Mu Wanyue, Lu Zixuan, and Bai Youruo nodded in agreement. They spread out around the stone gate, each using their immortal techniques to probe it from different angles. Mu Wanyue wielded her spirit whip, which gently touched the stone gate. Through the spiritual energy fluctuations transmitted by the whip, she sensed the energy changes inside the stone gate. Lu Zixuan closed his eyes, maximizing his spiritual senses to delve into the array structure surrounding the stone gate, attempting to find a way to break it. Bai Youruo played her spirit flute, the notes transforming into threads of spiritual energy that wrapped around the runes on the stone gate, searching for connections and weaknesses between them.

After meticulous exploration and research, Ye Yuanchen finally discovered the mechanism to open the stone door. This mechanism was hidden within a specific set of runes, requiring the infusion of spiritual energy at a specific frequency and in a specific order to trigger the mechanism and open the stone door. Ye Yuanchen took a deep breath, concentrated, and slowly infused his spiritual energy into the runes. As the energy was injected, the runes gradually lit up, emitting a ghostly blue light, and the stone door slowly opened, releasing an aura of antiquity and decay.

Upon entering the ruins, they discovered a vast underground palace. The palace walls were inlaid with various luminous gems and crystals, but this light was shrouded in darkness, giving it an eerie appearance. The palace floor was riddled with traps and obstacles; a single misstep could trigger a mechanism and plunge one into danger.

They cautiously made their way along the palace corridor when suddenly, a group of dark puppets appeared ahead. These puppets were tall, made entirely of black metal, with red glowing eyes, and wielding various weapons. They lunged at Ye Yuanchen and the others.

Ye Yuanchen immediately cast a defensive immortal spell, protecting everyone behind him. He said to Mu Wanyue, Lu Zixuan, and Bai Youruo, "These puppets are not to be underestimated. Be careful. I will draw their attention, and you will look for opportunities to attack their weaknesses."

Having said that, Ye Yuanchen charged towards the puppet horde. He unleashed the "Spirit Realm Radiant Sun Soul-Shattering Technique," transforming into a golden ray of light that weaved through the puppets, attacking their vital points. Mu Wanyue wielded her spirit whip, which, like a nimble dragon, coiled around the puppets' weapons, rendering them incapable of attack. Lu Zixuan swiftly set up an attack formation, within which spiritual energy arrows rained down upon the puppets. Bai Youruo played her spirit flute, the notes transforming into sonic attacks that disrupted the puppets' movements, rendering their attacks chaotic and disorganized.

During the battle, Ye Yuanchen discovered that the puppets' weakness lay in the core device in their heads. Destroying this core device would stop the puppets from functioning. He shared this discovery with the others, and they began to focus their attacks on the puppets' heads.

After a fierce battle, they finally succeeded in destroying all the puppets. Continuing deeper into the palace, they arrived at a vast hall. In the center of the hall was a circular stone platform, upon which rested an ancient book radiating a dark light. Ye Yuanchen and the others approached the platform, sensing a powerful attraction emanating from the ancient book, but also perceiving an extremely dangerous dark power contained within it.

Ye Yuanchen reached out, intending to pick up the ancient book, but just as his hand was about to touch it, he suddenly felt a powerful dark force surge into his mind, attempting to erode his soul. Startled, he quickly withdrew his hand and activated his immortal technique to resist the invasion of this dark force.

“This ancient book contains powerful dark magic; we cannot touch it lightly,” Ye Yuanchen said, his forehead covered in sweat, clearly still shaken by his recent experience.

Mu Wanyue looked at Ye Yuanchen, her eyes filled with worry. "What should we do? This ancient book might be related to the rebirth of the Dark Night Demon Lord. We can't just give up like this."

After thinking for a moment, Lu Zixuan said, "Perhaps we can try to trap the ancient book with an array, and then slowly study its secrets."

Bai Youruo also agreed: "This method is feasible. I can use the sound of my flute to enhance the formation and increase its stability."

Therefore, Lu Zixuan began to set up a special sealing formation around the stone platform. This formation combined the functions of defense, sealing, and purification, capable of confining the dark power in the ancient text within a certain range while preventing its spread. Bai Youruo played the spirit flute, and the flute music transformed into threads of spiritual energy, merging into the formation and enhancing its power.

After setting up the formation, Ye Yuanchen and the others began to try to decipher the contents of the ancient text. They discovered that the text recorded an ancient dark rebirth ritual. This ritual required specific dark ruins, powerful sources of dark energy, and the sacrifice of a large number of living beings to bring a deceased dark demon god back to life. The Dark Night Demon Lord had used this ritual to complete his rebirth in a corner corrupted by dark power.

“I see. We must find and destroy this source of dark power to completely prevent the Dark Night Demon Lord from being reborn,” Ye Yuanchen said, his eyes revealing a firm resolve.

Following clues from ancient texts, they learned that the source of the dark power lay deep within the ruins. They continued along the palace's passageways, encountering various dangers and challenges along the way. They encountered powerful dark magic traps capable of unleashing attacks from various dark elements, such as dark flames, dark frost, and dark lightning. Ye Yuanchen and his companions, relying on their individual magical abilities and seamless teamwork, repeatedly escaped danger.

Finally, they arrived at the source of the dark power. A massive dark vortex hovered in mid-air, constantly surging with powerful dark energy that spread outwards like a black tide. Around the vortex, several dark mages were performing some kind of ritual, holding various dark magical artifacts and chanting incantations, seemingly strengthening the source of the dark power.

Ye Yuanchen and the others launched their attack without hesitation. Ye Yuanchen unleashed the "Spirit Realm Holy Radiance Demon-Slaying Technique," transforming into a golden ray of light as he charged towards the dark mage. Mu Wanyue wielded her spirit whip, which, like a pink dragon, traced graceful arcs through the air, attacking the dark mage's vital points. Lu Zixuan swiftly set up another attack formation, within which spiritual energy arrows rained down upon the dark mage. Bai Youruo played her spirit flute, the notes transforming into sonic attacks to disrupt the dark mage's movements, preventing their ritual from proceeding smoothly.

During the battle, Ye Yuanchen discovered that these dark mages were incredibly powerful; their dark magic could be combined to form a formidable defensive and offensive system. However, Ye Yuanchen and his companions did not back down, constantly searching for the enemy's weaknesses throughout the fight.

After a fierce battle, they finally defeated the dark mage. However, the source of dark power continued to release its power, and Ye Yuanchen knew that he had to find a way to destroy it.

Recalling his experience fighting the source of darkness in the Spirit Realm, he decided to try using the primal power of the Spirit Realm to destroy this source of darkness. He connected his soul to the primal power of the Spirit Realm and then guided it towards the source of darkness. Mu Wanyue, Lu Zixuan, and Bai Youruo also connected their souls to Ye Yuanchen's, jointly guiding the primal power of the Spirit Realm.

Under the powerful impact of the primordial energy of the spirit realm, cracks began to appear in the source of dark power. As the cracks widened, the source of dark power finally shattered with a deafening roar. The dark aura dissipated, and the dark power within the ruins was completely eradicated.

Ye Yuanchen and his companions successfully uncovered the secrets within the ruins and destroyed the source of dark power associated with the rebirth of the Dark Night Demon Lord. Armed with the invaluable information gleaned from the ruins, they continued their journey to the next ruin that might hold dark secrets, relentlessly striving to completely eliminate the threat of dark forces.