"Master!"
Lu Feng stood up from the ground, and said respectfully.
"Lu Feng, I'm sorry to have kept you waiting!" Bi Ling saw that Lu Feng seemed to have been waiting for a long time, and apologized.
"Master, that … Is that girl okay!? " Lu Feng asked after hesitating for a while.
Because he felt that the girl's injuries were severe, coupled with the fact that Bi Ling was only here now, the situation was obvious.
"She's fine now, thank you for your concern!" Bi Ling thanked him.
If Lu Feng had not found out in time, she would have lost her only sister.
"Master, she should also be a disciple of the Dimly Discernible Sect, so saving her is also within reason, but …" Lu Feng was unable to continue on until this point.
Although Lu Feng had saved the girl, the situation at that time made him a little unsure of what to say.
"I know what you want to say, it's not your fault. After all, saving people is more important. Alright, let's go in!" Bi Ling said softly.
"Yes, Master!"
Lu Feng replied. Since Bi Ling did not want to say anything, he would naturally not bring it up again. After all, what happened before was somewhat embarrassing.
Just like this, under Bi Ling's lead, Lu Feng quickly arrived at the Ethereal Cistern.
There wasn't a drop of water inside the Ethereal Cistern, there was only a strand of white mist.
This fog was very special. It all gathered in the Ethereal Cistern, and not a single strand floated out from the pool.
"Lu Feng, take off all your clothes, and then jump in!" Bi Ling glanced at Lu Feng, and said softly afterwards.
"Oh!"
Although Bi Ling was a woman, to Lu Feng, the other party was a senior, so he did not have any concerns.
After a short while, all of Lu Feng's clothes were taken off, and at this time, Bi Ling, who was originally looking at him, tilted his head slightly to the side.
Even if Bi Ling treated Lu Feng as a child, when she truly saw Lu Feng's robust body, her heartbeat actually uncontrollably sped up.
As the sect master of a Dimly Discernible Sect, naturally, the relationship between a man and a woman was rather unfamiliar. Let alone the fact that the man was naked, even the man didn't have much contact with him.
Therefore, if not for the relationship with Mu Xiao, Bi Ling would definitely not take Lu Feng as his disciple.
Lu Feng did not notice anything abnormal about Bi Ling, as he immediately jumped into the Ethereal Cistern after taking off his clothes.
This Ethereal Cistern wasn't really that big, and when Lu Feng jumped down with his height of a little over 1.6m, the white colored fog reached only up to his waist.
"Sit down cross-legged and hold your breath!"
Seeing that the important part of Lu Feng's body was covered by the white mist, Bi Ling took a deep breath and spoke out.
Hearing that, Lu Feng immediately sat down, and the moment he sat down, he was completely enveloped by the white mist.
"Lu Feng, for the next three days and three nights, Ethereal Cistern will help you improve your physique, allowing your body to be suitable to possess a Ethereal Power. Of course, this process will be extremely painful, so you need to be mentally prepared." Bi Ling reminded.
"I got it!"
Lu Feng's voice sounded, and at this time, his voice was already somewhat painful.
That's right, when Lu Feng had just sat down and meditated, he already felt that his body was starting to feel pain, but this kind of weak pain didn't have any effect on him.
Of course, this feeling only lasted for a few seconds. When Bi Ling's voice came out, the pain on his body also started to intensify.
"Lu Feng, if you can't persevere for three days and three nights, then it's not suitable for you to cultivate in the Ethereal Power. Of course, you can't force yourself either, or your life will be in danger!"
"The pain in my body will continue to increase as time passes. I'll come back tomorrow at this time. You better take care of yourself!" Bi Ling said a few words, and then her figure disappeared in the next second.
To own a Ethereal Power, one had to suffer, so he could not help in any way, and with that, Bi Ling no longer had to stand guard here.
"Hu!"
After Bi Ling left, Lu Feng let out a light breath. He had endured the pain brought about by the Indestructible Body, so the pain he felt from his body right now wasn't much to him.
That was why Lu Feng was currently bored.
"Brat, if you want to speed up your progress, you can circulate your Qi Method and actively absorb the white mist into your body. Of course, if you do so, the pain you will suffer will be doubled. Mu Xiao's voice sounded at this moment.
Regarding Lu Feng's situation, Mu Xiao still had some understanding, so he knew that the very first day wouldn't do much to him.
Rather than wasting time here, he might as well speed up his progress.
"Active absorption?"
Hearing Mu Xiao's words, Lu Feng slightly hesitated, because doing so would cause the pain to intensify, and he didn't know how much pain he originally had.
"Senior, do you think I can?" Lu Feng asked.
"If you can withstand the pain brought by the body tempering, then your willpower must be very firm, so you can give it a try!" Mu Xiao suggested.
If he really could not endure it, then he would at most withdraw, and even if three days did not come, the improvement of Lu Feng's body would definitely be much better than those who stayed for three days.
"Alright!"
Lu Feng believed that Mu Xiao would not harm him. After all, if he died, it would not benefit him at all.
He wanted to let himself have the Ethereal Power only for the sake of collecting the Nine Heavens Spiritual Array.
After thinking about it, Lu Feng agreed. After all, if he didn't try, how would he know if he couldn't?
"Hu!"
After he let out a light breath, Lu Feng began to silently circulate the Indestructible Mantra, and in the next second, the pain in his body increased by ten times.
Ah!
In less than two seconds, Lu Feng's scream resounded in the entire space.
Although Lu Feng was already prepared, the truth was that she still gave him a fierce slap. The pain was too intense.
If not for Lu Feng's firm willpower, he probably would have fainted on the spot.
"Lu Feng, this is only the beginning. The longer you can persevere, the stronger the Ethereal Power you can cultivate will be." Seeing Lu Feng's painful expression, Mu Xiao hurriedly said out.
"I know!"
Lu Feng painfully replied in his mind, and immediately afterwards, he once again let out a miserable scream.
If someone was in the vicinity at this time, they would definitely be scared stiff by Lu Feng's miserable cries, because that person was simply too terrifying.
Just like this, roughly half a day had passed, and Lu Feng's miserable shrieks had already disappeared. It wasn't that he was no longer in pain, but because he was no longer able to utter a single word after crying for half a day.
After half a day, the pain on Lu Feng's body became several times stronger than it was at the start, and the pain he was currently enduring now had far surpassed the pain of being able to stay alive for three days.
Therefore, as long as Lu Feng could stay a little longer, then the improvement of his physique would have already surpassed most of the disciples in the Dimly Discernible Sect.
"En!"
Seeing that Lu Feng was still persisting, he nodded his head in satisfaction, because only Lu Feng here was what he wanted.
The younger the Ethereal Power, the greater its achievements would be in the future.
Back then, when Mu Xiao and Bi Yun discovered this power, they had already become strong people of their side. At that time, they also wanted to improve their physiques in this way.
Although both of them had finally acquired this miraculous power, many years later, they discovered that this force did not show any signs of becoming stronger.
At first, they didn't know what was going on, but after they transmitted this power, they finally understood why.
It was because their cultivation was about to reach its peak, so it was very difficult for Ethereal Power to have room for growth.
Right now, Lu Feng was only a cultivator of the Early Period of Spirit Gathering Stage, so once he had the Ethereal Power, then the power would increase along with his cultivation, and at that time, its power would be incalculable.
Of course, as I said before, the strength of Ethereal Power s is related to the improvement of their physiques. The more powerful the improvement, the stronger the cultivation of Ethereal Power s will be.
Thus, when Mu Xiao saw that Lu Feng could endure in such a situation for half a day, his heart was filled with satisfaction.
"As expected of the person who could make the Heaven Piercing Tower recognize him as its master, I think it knows that this young man is not simple!" Mu Xiao muttered.
The Heaven Piercing Tower was indeed obtained by Lu Feng by chance, but it had its own spirit, not just anyone could make it obediently recognize its master.
And for Lu Feng to become the master of a Heaven Piercing Tower, it was obvious that he had something extraordinary about him.
Just like this, looking at Lu Feng who was still deep in pain, Mu Xiao felt as if he had seen the day he came out.
Heaven Piercing Tower had always been a treasure that connected to the outside world, but why did it fail that time? Mu Xiao wanted to personally investigate.
Because if not for his good luck, he would have probably died in this Heaven Piercing Tower long ago.
Of course, if it was for a natural reason, then Mu Xiao would accept it. Maybe it was her fate, but if it was deliberately destroyed by someone, then he would definitely find her.
In the blink of an eye, one day and one night passed. However, this one day and one night felt as if a hundred years had passed for Lu Feng.
Especially during the latter half of the night, the pain in his body increased yet again, making it even more difficult for him to endure.
If not for his strong willpower, Lu Feng would have died a long time ago.
"Hmm?"
Just as Lu Feng was struggling to persevere, a light cry came to his ears.
Hearing this voice, Lu Feng knew that Bi Ling had come over.
"Lu Feng!"
When Bi Ling felt that there was something wrong with Lu Feng's aura, she couldn't help but cry out.
It must be known that this was just for a day and a night, but from the looks of Lu Feng's weak aura, it seemed as if he could not hold on any longer.
But Bi Ling never would have thought that even if it was only for a day and night, at that time, Lu Feng's physical improvement had already caught up to all of the disciples in the Dimly Discernible Sect.