"You know about this formation, and Old Li isn't surprised."
"After all, the fact that Senior Lu Wuya left a formation in the heart of Spine Mountain is common knowledge among the cultivators here; it's no secret."
"Moreover, there's someone guarding the formation every day, just to prevent any Immortal Slave from sneaking in to destroy it."
"Upon hearing your request, Old Li thought for a moment and then personally led you there."
"You successfully entered the heart of Spine Mountain and arrived at the formation left by Senior Lu Wuya."
"In the following days, you constantly observed and pondered over this formation using various formation knowledge."
"But aside from feeling dizzy, you gained nothing. You realized you were too impatient."
"With your current formation skills, this formation is like a book written in an unknown language."
"The principle of formations is to use various basic formation symbols to create different combinations to achieve various effects!"
"You couldn't even see the most basic formation symbols, let alone learn them."
"You knew it was because your formation skills were too low. The combinations of those symbols were too complex for you to comprehend, so you couldn't see them."
"So, you had to leave, deciding to return once your formation skills improved."
"During this time, Old Li followed you closely."
"You knew it was because the formation left by Senior Lu Wuya was too important, and Old Li might not fully trust you yet."
"In the seventeenth year, you secluded yourself again, diligently studying formations; for this, you even temporarily gave up cultivating the Immortal Dao and Martial Dao."
"The reason was simple: you knew that Senior Lu Wuya's formation wouldn't hold until the next descent of Heavenly Thunder and would collapse."
"You wanted to fully enhance your formation skills to try and repair this formation."
"You thought that if you could repair this formation, you could hide inside it when the Heavenly Thunder descended, thus extending the simulation time!"
"Moreover, you now had the 'Longevity of the Southern Mountain' talent, which increased your lifespan by a thousand years."
"As long as you could repair this formation, you could cultivate for a thousand years, and you felt the benefits were immense."
"In the twenty-third year, you successfully set up a mid-grade Gathering Spirit Array, becoming a fourth-grade Formation Master."
"At this point, you finally understood that breaking through formations wasn't as easy as you had imagined."
"After fully digesting the Formation Dao jade slip, it took you six years to advance one grade."
"Old Li, upon learning this, was even more excited than you."
"This opened your eyes; the formation symbols you could see alone numbered in the millions."
"These symbols intertwined, forming various combinations and interweaving with each other."
"For a moment, you were dazzled."
"And what you could see was only a part of the formation; there was still a large portion you couldn't make out."
"You estimated that setting up this formation would require at least a billion formation symbols."
"This was simply unimaginable."
"A billion formation symbols, how many combinations would that entail?"
"Now, as a sixth-grade Formation Master, the formations you could set up required only tens of thousands of symbols, with just a few hundred combinations."
"Even so, in Old Li's eyes, you were already an extremely skilled Formation Master."
"You couldn't imagine how powerful Senior Lu Wuya must have been."
"Of course, what worried you more was the sealing formation outside the Southern Regions."
"If the formation left by Senior Lu Wuya used so many symbols, how powerful must the formation sealing the entire Southern Regions be?"
"Thinking of this, you couldn't help but feel a bit hopeless."
"Soon, you reminded yourself that this was within the simulation, and you still had time to improve."
"You calmed your mind and carefully observed the formation symbols you could see, studying their patterns and operational principles."
"After a day, you had a splitting headache."
"Clearly, with your current formation skills, you couldn't easily understand the complex patterns of these intertwined symbols."
"This formation was still too complex for you."
"You had to leave the place."
"However, a day's study still benefited you greatly."
"You learned many different symbol combinations. If you could understand these combinations, your formation skills might improve significantly!"
"In the forty-first year, you triggered a random enlightenment, gaining a tenfold increase in cultivation speed and more active thinking."
"This enlightenment lasted for ten months, during which you broke through to a seventh-grade Formation Master."
"At this point, your formation skills far surpassed your cultivation level. A seventh-grade Formation Master, compared to cultivation, could be considered a Body Integration stage expert."