Genshin Impact.

Under the guidance of the old man, Lin Feng and Li Er began their journey to the mortal world to experience tribulations. This tribulation was related to their future immortal path and was also a major test of their Taoism.

As soon as they entered the mortal world, Lin Feng and Li Er were shocked by the scene before them. The mortal world was completely different from the fairy world. There was no brilliance of immortal magic, no floating fairy clouds, only bustling crowds and streets full of fireworks.

"Master, what should we do next?" Li'er asked the old man, blinking her bright eyes.

The old man stroked his beard gently and looked into the distance with deep eyes: "The road to tribulation is something you need to explore by yourselves. The hardships, difficulties, joys and sorrows in this mortal world are all the tempering of your immortal heart. Remember, keep your original heart, and you will succeed." After that, the old man disappeared in a flash.

Lin Feng and Li Er looked at each other, confused but more determined. They decided to walk in this world first and understand the rules and ways of the world.

The two came to a prosperous town with busy traffic and numerous shops. With his extraordinary wisdom, Lin Feng soon found a job as a waiter in an inn, while Li'er became an embroiderer in an embroidery workshop. They tried hard to integrate into this ordinary world and experience the life of ordinary people.

However, the peaceful days did not last long. One day, a group of robbers came to the town, burning, killing, looting, and committing all kinds of evil. Lin Feng and Li Er witnessed the suffering of the people, and a sense of justice arose in their hearts.

"Lier, we can't just sit there and watch." Lin Feng clenched his fists.

Li'er nodded in agreement: "Well, even if we are going through hardships, we must not forget our original intentions."

So, the two used magic to subdue the gang of robbers. However, their actions attracted the attention of a local mysterious person.

This mysterious man was wearing a black robe and his face could not be seen. He secretly observed Lin Feng and Li'er, thinking about something in his mind.

After solving the problem of the robbers, Lin Feng and Li Er continued their journey of overcoming the difficulties. They helped the poor people and solved various problems, gradually winning the respect and love of the local people.

But at the same time, the mysterious man's conspiracy was quietly unfolding. It turned out that he was an evil cultivator who had always coveted the immortal arts of Lin Feng and Li'er. He secretly laid a trap and waited for the two to take the bait.

One day, Lin Feng and Li Er received a mysterious letter, which invited them to a deserted temple outside the city. Although they realized that there might be a trick, they decided to go there to find out the truth.

The moment they stepped into the deserted temple, a mist suddenly rose around them. The evil cultivator appeared, casting evil spells and attacking Lin Feng and Li'er.

Lin Feng and Li Er were not afraid of danger, they used their magic and started a fierce battle with the evil cultivator. However, the evil cultivator's magic was strange and tricky, and gradually, Lin Feng and Li Er fell into trouble.

Just when they were about to collapse, the old man suddenly appeared. With a wave of his hand, a powerful immortal power surged out, instantly subduing the evil cultivator.

"Master!" Lin Feng and Li'er shouted in surprise.

The old man looked at them, with a trace of relief in his eyes: "When facing danger, you did not retreat, and you held on to your immortal heart. You have passed this test."

Lin Feng and Li'er smiled at each other. They knew that this journey of trials and tribulations had made their resolve to become immortals more resolute and had also allowed them to take a solid step forward on the path to immortality.

The old man took Lin Feng and Li Er away from the mortal world and returned to the fairyland. They will continue to explore the fairyland and pursue a higher realm.