Lin Bai sat cross-legged on the ground. As he concentrated on it, a trace of mist seemed to gradually fill the cave of the sword god Dugu Yunhe.

Lin Bai circulated his sword intention and spread it throughout the cave, trying to use his sword intention to communicate with the remaining sword intention left by the sword god Dugu Yunhe in the cave.

Half an hour later, Lin Bai shook his head helplessly, opened his eyes, and whispered: "No, after too many years, the sword intent in this cave has basically dissipated!"

"It is basically impossible to use sword intention to communicate with Dugu Yunhe's sword intention."

"Then we have to think of other ways."

Lin Bai stood up from the ground and walked in the cave, looking at the vague words left on the stone wall and looking at some vague sword marks around him.

"What do these words and sword marks mean?"

Lin Bai said with a strange expression.

After walking back and forth in the cave for several times, Lin Bai stopped again and whispered: "There are a total of eighteen sword marks and twenty-seven characters in this cave!"

"Eighteen sword marks..."

"Twenty-seven words..."

"What does this mean?"

"And these sword marks and words have been washed over the years and have become almost illegible."

Lin Bai shook his head in distress.

As he wandered around the cave again, Lin Bai had a strong feeling in his heart. It seemed that the secret of the "Mist Sword Art" lay in these eighteen sword marks and twenty-seven words.

Immediately, Lin Bai looked carefully at the sword marks and writings in the cave.

But after reading it this time, Lin Bai looked suddenly shocked and said in disbelief: "How is this possible...how could it become nineteen sword marks and thirty-one characters?"

"There were clearly eighteen sword marks and twenty-seven words just now!"

Lin Bai was a little surprised and felt that he had counted wrongly.

Immediately, Lin Bai hurriedly returned to the entrance of the cave, and slowly counted the sword marks and words one by one.

But this time, the sword marks Lin Bai got actually had forty-one sword marks and seventy-two characters.

"Forty-one sword marks and seventy-two characters again?"

Lin Bai frowned a little.

Immediately, Lin Bai started over again and counted one side again.

But this time, Lin Bai found that there were eighty-one sword marks left in the cave, but there were seven hundred and twenty characters.

"It's really strange. Every time I count the sides again, there will be more words and sword marks in this cave. Why is this?" Lin Bai stood in the cave in confusion.

Although Lin Bai didn't know why.

But this aroused Lin Bai's interest. He smiled and said: "I really want to see how many sword marks and writings can appear in this cave..."

"Come again!"

Lin Bai returned to the entrance of the cave and once again counted the sword marks in detail.

"Ninety-nine sword marks..."

"One hundred and twenty-seven sword marks..."

"Three hundred and sixty sword marks..."

"..."

"Nine hundred and eighty-two words..."

"One thousand five hundred and thirty-one words..."

"Three thousand three hundred and thirty-nine words..."

"..."

As Lin Bai kept traveling back and forth in the cave, he saw more and more sword marks and more and more words!

At this time, Lin Bai stood in the cave and looked up. Inside the cave, the walls were densely covered with sword marks, and between those sword marks, some words could be faintly seen.

In the cave of Sword God Dugu Yunhe, Lin Bai counted for three days in a row.

And when Lin Bai was tensed up, every time he counted more sword marks and words, his head started to hurt more and more.

When Lin Bai counted "seven hundred and twenty sword marks", Lin Bai's head almost exploded, as if there was a force inside that was constantly trying to break Lin Bai's head.

"Come again!"

Lin Bai gritted his teeth and continued counting.

On the fifth day, Lin Bai saw nine hundred and ninety-nine sword marks and fifteen thousand words. At this moment, Lin Bai reached his limit, as if there was a mysterious force in his body that was tearing him apart crazily. His body was about to tear him into pieces!

"Nine hundred and ninety-nine sword marks, fifteen thousand words!"

"Are these all the sword marks and writings in this cave?"

Lin Bai's face was livid, and his blood-red eyes looked at the sword marks and writings in the cave.

From three hours ago, when Lin Bai counted again, the number of words in this cave had stopped increasing, and had remained at 999 sword marks or 15,000 words.

Lin Bai tried several more times to make sure that the number would not change.

Lin Bai stood in the cave, his eyes blood red. He looked up and saw that the walls around the cave were densely covered with sword marks, but between these sword marks, there was a word.

These words are so separated that it is almost impossible to connect them into a sentence.

"Then what do these sword marks and these words mean?"

Lin Bai had a splitting headache, and his mentality began to become impetuous. There was a hint of murderous intention in his words.

Look at these sword marks, look at these words.

Lin Bai, whose head was about to explode, had no intention of thinking about the mystery of these sword marks and words at the moment.

With no choice, Lin Bai could only sit down first and slowly began to understand the mystery.

After stabilizing his fluctuating emotions, Lin Bai looked at the sword marks and words again.

Suddenly at this moment, Lin Bai's eyes flashed and he whispered: "There is nothing weird about these sword marks, but these words... seem a bit..."

"These words don't seem to be words, but...a magic circle!"

"Is there a formation in this cave?"

Lin Bai's eyes flashed, he stood up from the ground, picked out the words one by one among the sword marks, and began to arrange them in his mind.

At this moment, Lin Bai had a thought in his mind, and a sword intention fell on one of the words. The words immediately emerged with a golden light, and then the surrounding sword marks also lit up with a dazzling golden light.

"It's indeed a formation!"

Lin Bai's eyes paused.

Immediately use the sword intention to light up other words.

But when Lin Bai's sword intention touched another text, the text did not light up. Instead, the previously lit text also dimmed in an instant.

"Huh?" Lin Bai was stunned, looked at the words he had lit before, stood in front of him, thought for a long time and said, "Is the order I lit them wrong?"

"If I click in the wrong order, the previous text will be extinguished!"

"Then where is the secret to rekindling this formation?"

Lin Bai looked at these words and pondered for a long time, and finally his eyes fell on those sword marks.

At this time, Lin Bai said with a wry smile: "Dugu Yunhe, Dugu Yunhe, you are such an old fox!"

"Leave invisible sword marks and writings in this cave. If you are not a true swordsman genius, you would have to visit the thatched cottage three times to see the sword marks and writings you have hidden!"

"And even if we see it, we still need to discern the mystery in your sword marks and words!"

"Words are the key to opening the magic circle!"

"And the sword marks are the order in which the words are lit!"

Lin Bai smiled slightly and returned to the entrance of the cave. He looked up at the stone wall on the left. There were one hundred and twenty words between the sword marks.

Among these one hundred and twenty words, Lin Bai carefully studied them, and based on the marks and techniques of those sword marks, he considered them bit by bit.

Immediately, Lin Bai walked over, his sword was touched, and the words lit up on the stone wall one after another.