Autobiography of Li Yunfei, a time traveler

After Li Yunfei and Lin Ya finished their retreat, they continued their journey. One day, when they passed through a small town, they accidentally heard the legend about the Sword Qi Great Wall.

It is said that in the distant border, there is a Great Wall formed by the sword energy of the ancestors of the human race, which resists the invasion from foreign races and protects the peace of the human race. But now, the Sword Energy Great Wall seems to be facing a huge crisis.

"Yun Fei, do you want to go and see the Sword Energy Great Wall?" Lin Ya asked curiously.

Li Yunfei pondered for a moment and nodded, "Now that we know, let's go and take a look. Maybe we can do something for the human race."

So, they headed towards the Jianqi Great Wall according to the direction they had inquired. Along the way, they saw many people who suffered because of foreign invasions, which further strengthened their determination to go to the Jianqi Great Wall.

After a long journey, they finally saw the legendary Great Wall of Sword Qi from afar. The Great Wall stood tall and majestic, with sword Qi running through it, exuding a majestic and tragic atmosphere.

As they approached, they were stopped by the guards on the city wall.

"Who are you? What are you doing here?" the soldier asked warily.

Li Yunfei cupped his hands and said, "We heard that the Sword Qi Great Wall was in trouble, so we came to help."

The soldier looked them up and down. "Just you guys?"

Li Yunfei smiled slightly, and took out a magic weapon in his hand, releasing a powerful aura. The soldiers saw this, and a trace of surprise flashed in their eyes, and then they were allowed to enter the city.

After entering the city, they met the general in charge of the area. The general looked tired, but his eyes were still firm.

"Thank you for coming to help, but the current situation is very critical," said the general.

Li Yunfei asked: "What happened?"

The general sighed, "The foreign tribes have been attacking fiercely recently, and we have suffered heavy casualties. Moreover, they seem to have found a way to restrain the Sword Qi Great Wall."

"How to restrain the Sword Energy Great Wall?" Lin Ya asked in surprise.

The general nodded, "Yes, our sword energy is becoming less and less effective against them."

Li Yunfei frowned, "How is this possible?"

The general shook his head helplessly, "We don't know the reason either, but if we can't solve this problem, the Sword Qi Great Wall may not last long."

Li Yunfei and Lin Ya looked at each other, and a sense of responsibility surged in their hearts. They decided to find out why the foreign race restrained the Sword Qi Great Wall.

In the following days, they investigated everywhere and communicated with soldiers, trying to find clues. Finally, they got important information in a conversation with a veteran.

"I remember one time, when foreign invaders attacked, a strange light seemed to appear in the sky. That light seemed to have an effect on our sword energy," the veteran recalled.

Li Yunfei and Lin Ya were moved when they heard this, and they realized that the strange light might be the key.

So, they began to look for the trace of the light nearby. After some effort, they finally found some strange runes in a valley.

These runes exude a strange aura and seem to be related to the light.

"What is this?" Lin Ya asked.

Li Yunfei observed the runes carefully. "I feel that these runes may be a kind of formation used to weaken the Sword Qi Great Wall."

"Then what should we do?" Lin Ya asked anxiously.

Li Yunfei thought for a moment and said, "We must destroy this formation."

They immediately started to study how to destroy the formation. After continuous attempts and explorations, they finally found a way to break it.

One night, they quietly sneaked into the valley and launched an attack on the rune. As they attacked, the rune began to flicker, and finally collapsed and dissipated.

At the same time, on the Sword Qi Great Wall, the soldiers were pleasantly surprised to find that their sword energy had regained its former power.

"Great, we succeeded!" Lin Ya said excitedly.

Li Yunfei smiled and said, "It's not over yet. We still have to help them resist the invasion of foreign tribes."

In the following days, Li Yunfei and Lin Ya fought side by side with the soldiers, resisting the repeated attacks of foreign tribes. With their strength and courage, they repeatedly made military exploits on the battlefield and became heroes in the hearts of the soldiers.

However, the foreign tribes did not give up and continued to attack. Li Yunfei and Lin Ya knew that this battle would continue for a long time.

"Yun Fei, no matter what difficulties we encounter, we must persevere and fight for the justice of the human race." Lin Ya said firmly.

Li Yunfei nodded, "Well, we will never back down."

They held their weapons tightly and continued to stand firm on the Sword Energy Great Wall, waiting for the final victory.