The Immortal Physician's Transmigration: Miraculous Rejuvenation

Ye Yuanchen, Mu Wanyue, Lu Zixuan, and Bai Youruo encountered difficulties in their respective investigations across the Three Realms, but they showed no sign of backing down. These four warriors, bearing the safety of the Three Realms on their shoulders, continued to explore the truth amidst the dense fog of mystery, relying on their unwavering faith and indomitable will.

Ye Yuanchen found himself in the eerie mist of the cultivation world. Although the mysterious figure had vanished without a trace, he hadn't given up the search. He carefully paced through the mist, not overlooking any subtle clue. Suddenly, he discovered a stone on the ground, its surface engraved with strange patterns. These patterns were somewhat similar to the runes he had seen in the Dark Castle, yet subtle differences remained.

"This might be the key to unraveling the mystery of the fog." Ye Yuanchen's heart stirred. He crouched down and gently touched the stone with the Spirit Void Holy Sword. The instant the Holy Sword touched the stone, the patterns on the stone suddenly lit up with a faint light. The light spread along the sword to Ye Yuanchen's arm, and a flood of information rushed into his mind.

Through this information, Ye Yuanchen learned that this mist was formed by an ancient dark barrier, and the mysterious figures in black robes were the guardians of this barrier. The existence of this barrier seemed to be to conceal some more evil entity, or some powerful dark force.

"It seems the conspiracy behind this is more complex than we imagined." Ye Yuanchen frowned, knowing he had to break through the fog as soon as possible and find the mastermind. He once again unleashed the "Spirit Realm Chaos Suppressing God Technique," this time infusing it with the power of the sacred artifact. The golden light became even more dazzling, like a blazing sun, attempting to completely dispel the fog.

Meanwhile, Mu Wanyue engaged in a fierce battle with the mysterious black shadow in the lake within the spirit realm. She discovered that relying solely on the power of her Spirit Whip was insufficient to inflict substantial damage on the shadow, so she began to observe its patterns of movement. During numerous attacks and evasions, she noticed that each time the shadow extended its tentacles to attack, a peculiar fluctuation of spiritual energy would ripple across the lakebed.

"This might be its weakness," Mu Wanyue thought to herself. She stopped blindly attacking the tentacles and waited for the shadowy figure to launch its attack. Following the direction of the spiritual energy fluctuations, she concentrated the power of the Spirit Void Whip at one point and thrust it fiercely towards the bottom of the lake.

This time, the Spirit Whip successfully pierced through the lake water and touched something at the bottom. With a muffled roar, the dark shadow in the lake writhed violently, and more tentacles stretched out from the lake, attacking Mu Wanyue frantically. But Mu Wanyue did not back down. She gripped the Spirit Whip tightly, constantly adjusting the angle and force of her attacks.

In the fierce confrontation, Mu Wanyue finally saw the true form of the dark shadow at the bottom of the lake—a giant dark octopus, its body covered in black scales, its eyes flashing with an eerie red light. This dark octopus seemed to be controlled by some evil force, becoming a tool for destroying the spirit world.

"I will definitely subdue you and restore peace to the spirit world." Mu Wanyue gritted her teeth and used all her skills to fight the dark octopus to the death.

In the abandoned temple in the mortal realm, Lu Zixuan and Bai Youruo remained calm despite the constant emergence of dark figures. Lu Zixuan maintained the operation of the "Spirit Void Sacred Array" while carefully observing the shapes and attack methods of the figures. He discovered that although these figures were numerous, their movements seemed to be somewhat restricted, and their attack routes followed a certain pattern.

"Bai Youruo, use your flute to disrupt their movements, and I'll find a way to break their defenses," Lu Zixuan shouted to Bai Youruo.

Bai Youruo nodded in agreement, and she played the Spirit Void Sound Flute even more passionately. The flute's sound transformed into golden sound waves, forming an invisible wall that blocked the advance of the dark figures. Under the interference of the flute's sound, the dark figures' movements became sluggish, and their shapes began to blur.

Taking advantage of the opportunity, Lu Zixuan arranged some special runes within the formation. These runes were designed on the spot based on the shadow's weaknesses. Once the runes were arranged, he activated the formation, and a powerful beam of spiritual energy shot out from the formation, heading straight for the shadow.

Under the impact of the spiritual energy pillars, the shadowy figures let out screams as their bodies began to gradually dissipate. However, just as the shadowy figures were about to completely vanish, an even more sinister aura suddenly emanated from the depths of the temple, and a huge black figure slowly emerged.

"It seems this is the real mastermind." Lu Zixuan clenched his fists, and he and Bai Youruo were on high alert, ready to face an even greater challenge.

After a fierce battle, Ye Yuanchen finally broke through the misty barrier of the cultivation world. The moment the barrier shattered, a black light shot into the sky and flew into the distance. Ye Yuanchen gave chase without hesitation, knowing that the source of this light was very likely the core of the dark forces' new conspiracy.

In her battle with the dark octopus, Mu Wanyue gradually gained the upper hand. Seizing the opportune moment, she pierced the dark octopus's eye with her Spirit Whip. The dark octopus let out a painful roar, its body rapidly shrinking until it disappeared into the lake's depths. With the dark octopus's disappearance, the lake water gradually returned to its clear state, and the surrounding spiritual plants began to revive.

"Phew, finally it's over." Mu Wanyue breathed a sigh of relief, but she knew that things were not over yet. She had to reunite with Ye Yuanchen and the others to deal with the upcoming crisis together.

The enormous black figure before Lu Zixuan and Bai Youruo was actually a demon formed from dark resentment. The demon was huge and had a ferocious face. It opened its blood-red maw and spewed a cloud of black smoke at Lu Zixuan and Bai Youruo.

Lu Zixuan quickly erected a spiritual energy shield in front of him, blocking the invasion of the black smoke. Bai Youruo then played the Lingxu Lingyin Flute, attempting to purify the evil spirit's dark resentment with the sound. The flute music echoed in the temple, and the evil spirit's body began to tremble slightly, as if it sensed the purifying power contained within the flute music.

"Let's attack together, we can't give it a chance to breathe!" Lu Zixuan shouted. He manipulated the "Spirit Void Sacred Array," launching beams of spiritual energy towards the evil spirit. Bai Youruo also increased the intensity of her playing, the flute music becoming even more passionate, the golden sound waves like sharp blades cutting into the evil spirit's body.

Under the combined attack of the two, the demon's body gradually became transparent, and its dark resentment began to dissipate. Finally, the demon let out a shrill scream and vanished completely into the air.

After resolving the crisis in the mortal realm, Lu Zixuan and Bai Youruo immediately headed to the agreed meeting place with Ye Yuanchen and Mu Wanyue. When the four of them reunited, each of them wore a weary expression, but their eyes were filled with determination.

"I found some clues in the mist. The dark forces seem to be plotting a bigger conspiracy. We must stop them as soon as possible," Ye Yuanchen told everyone.

“I’ve also dealt with the dark octopus in the lake. It seems to be controlled by some force to disrupt the stability of the spirit world,” Mu Wanyue said.

Lu Zixuan and Bai Youruo also shared their experiences in the mortal realm. After some discussion, they speculated that these seemingly independent events were actually a scheme devised by dark forces to stage a comeback.

"We can no longer let the dark forces succeed. We must find their core plan as soon as possible and completely destroy it." Ye Yuanchen clenched his fist, his eyes revealing a firm determination.

Thus, Ye Yuanchen and his companions began a new round of tracking based on the existing clues. They knew that an even more difficult battle awaited them, but they were fearless. For they were the guardians of the Three Realms, and protecting the peace and tranquility of the Three Realms was their inescapable responsibility. In this challenging journey, could they successfully thwart the dark forces' conspiracy and allow the Three Realms to continue to enjoy peace? Everything remained uncertain, but their conviction burned like a blazing flame, illuminating their path forward.