Genshin Impact.

Under the guidance of the old man, Lin Feng and Li Er stepped into the secret realm of immortality and started their journey to the mortal world. In this mysterious realm, they overcame numerous difficulties and hardships. At this moment, they are about to usher in new opportunities and challenges.

In the secret realm of Xianyuan, Lin Feng and Li'er carefully explored every corner. The mysterious fairy mist filled the air, making it difficult to see the road ahead. Lin Feng held the fairy sword in his hand, his eyes revealed determination and vigilance, ready to deal with possible dangers at any time.

Li'er followed behind Lin Feng, the fairy staff in her hand flashing a soft light, lighting the way for them. "Brother Lin Feng, this fairyland is full of dangers, we must be careful." Li'er said softly.

Lin Feng nodded and responded: "Don't worry, Li'er, I will protect you."

At this moment, a strong wave of immortal power suddenly came from the front. Lin Feng and Li'er looked at each other and quickened their pace to walk in the direction of the wave. They saw an ancient immortal platform standing in front of them, emitting a brilliant light, attracting their attention.

The old man appeared beside them, stroked his beard and said, "This is the opportunity in the secret realm of immortality. If you can climb the immortal platform, you may get unexpected gains."

Upon hearing this, Lin Feng and Li Er walked towards the immortal platform without hesitation. However, when they approached the immortal platform, a strong pressure came over them, making it difficult for them to move forward.

Lin Feng gritted his teeth, resisted the pressure, and moved forward step by step. Li Er was not to be outdone, and used all her power to follow closely behind Lin Feng.

Finally, they boarded the immortal platform. On the immortal platform, there was an ancient immortal book, with mysterious runes flashing on it. Lin Feng reached out and picked up the immortal book, and suddenly a powerful immortal power surged into his body.

His body began to change, his meridians continued to widen, and his immortal power became more powerful. Li'er watched Lin Feng's changes from the side, with a look of surprise in her eyes.

However, just as Lin Feng was immersed in the joy of his increased immortal power, the immortal platform suddenly shook violently, and countless black cracks appeared around it. From the cracks, a group of powerful demons emerged.

These demons rushed towards Lin Feng and his companions with their fangs and claws bared. Lin Feng immediately took the immortal book into his arms, picked up the immortal sword, and started a fierce battle with the demons.

Li'er also used her magic, and rays of light shot out from her magic staff, hitting the demons. The old man blessed them with magic power and gave them a helping hand.

With the joint efforts of the three, the demons were gradually repelled. However, before they could catch their breath, new changes occurred in Xiantai.

The fairy platform began to slowly sink, and the fairy mist around it became thicker, making people lose their way. Lin Feng held Li'er's hand tightly to prevent her from getting lost.

"Everyone be careful, the danger in this secret realm of immortality is not over yet." The old man warned loudly.

At this moment, a mysterious voice sounded in their ears: "If you want to get the real opportunity, you must pass the final test."

As the sound disappeared, a light gate appeared in front of them. Lin Feng pulled Li'er without hesitation and walked into the light gate with the old man.

On the other side of the light gate was a mysterious space filled with powerful immortal energy, and the surrounding walls were engraved with ancient runes.

In the center of the space, there was a huge fairy stone, which was shining with colorful light and exuding a strong attraction.

Lin Feng felt that this immortal stone contained tremendous power. He slowly walked towards the immortal stone, and the moment his hand touched the immortal stone, a powerful immortal power surged into his body.

His body was wrapped in immortal power and suspended in the air. Li'er and the old man watched him nervously, fearing that something might happen to him.

Under the baptism of immortal power, Lin Feng's realm began to break through continuously. His immortal power became purer, and his immortal skills became more sophisticated.

After an unknown amount of time, Lin Feng slowly opened his eyes. There was a dazzling light in his eyes, and a powerful aura emanated from his body.

"Brother Lin Feng, you succeeded!" Li'er excitedly threw herself into Lin Feng's arms.

Lin Feng smiled and touched Li'er's head, saying, "Thanks to this opportunity, my strength has improved a lot."

The old man stepped forward and said, "Now that we have obtained the opportunity, we should leave here."

Lin Feng and Li'er nodded and followed the old man out of this mysterious space.

When they walked out of the secret realm of immortality, they found that the outside world had undergone tremendous changes. Anime was everywhere, and the world of the second dimension appeared before their eyes.

"What's going on?" Li'er asked in surprise.

The old man pondered for a moment and said, "Perhaps this is part of our experience in this world. We need to find new opportunities and breakthroughs in this world."

Lin Feng looked at this strange world in front of him, his heart full of expectations and challenges. He knew that in this two-dimensional world, they would have new adventures and journeys.