It took three days for Gu Changsheng to refine the Qihuang Body Sculpting Pill, the Tongue Spirit Removal Gu San, and also boiled two large pots of Bone Refining and Washing Marrow Soup and Tiger Claw Poison Removal Soup.

After some consideration, Gu Changsheng felt that it was really a good idea to detoxify, refine bones and wash the marrow in that secret room. At the very least, you don't have to worry about someone breaking in and interrupting the retreat! After all, in order to facilitate the absorption of medicine, you can't wear clothes when making medicinal soup.

So, Gu Changsheng, who had already made up his mind, asked Bai Ruoxi to take the Tongue Spirit Removal Gu San, and Gu Feichen to take the Qihuang Body Sculpting Pill, and then soaked them into the corresponding medicinal soup. The two of them faced each other with their palms to balance the spiritual pressure in their bodies, and then the exercise began to dissolve the medicinal power!

Gu Changsheng stayed in the hall outside, helping the two of them protect the Fa.

The medicinal power of the pill was very fast, and after just a few hours, Bai Ruoxi felt that there was a fire burning more and more in the dantian, but the limbs and other places were extremely cold, forming a very distinct feeling of heat and cold!

And this feeling became more and more violent, the fire in the dantian was like a small flame that quickly turned into a huge fire dragon rising into the sky, and her limbs and other parts also became hot, which made Gu Feichen a little stunned!

A stream of spiritual power poured into his body through his palms, Gu Feichen's puzzled color flashed, his face changed suddenly, his hands felt an unbearable tingling pain, and a huge amount of spiritual power suddenly poured into the dantian, and his entire body seemed to be about to burst.

The next moment, Gu Feichen's whole body was filled with a sharp pain that was like countless sharp knives frantically inserting into his body at the same time. This painful taste was completely beyond Gu Feichen's expectations, and he saw that his face was extremely pale, and beads of sweat the size of soybeans kept falling down his chin. The whole body trembled violently!

Gu Feichen held on in pain, holding Bai Ruoxi's palms with both hands, not letting the body curl affect the contact between the palms, once the palms were separated, the spiritual power in Bai Ruoxi's body had nowhere to vent, and he would explode and die.

Gu Feichen kept cheering himself up in his heart, and at the same time, he was glad that his eldest brother had told him in advance that there would be extremely painful things in this process, so that he knew that once he let go of his wife, his life would be in danger, so he would desperately clasp the other party's palms.

But all this was just the beginning, and a sharp pain suddenly erupted in the dantian.

This explosion turned into countless heat streams, which immediately spread throughout the body along the meridians, and even penetrated deep into the bone marrow.

But then, the heat immediately turned into an unbearable itch, and it seemed that countless ants were crawling all over his body, making him want to hit his head against the barrel so that he could relieve the pain a little!

This kind of torture that almost made Gu Feichen crazy lasted for most of the day before it gradually subsided. At this time, both of them were already in a trance, barely holding on to their bodies to ensure that their palms did not let go!

At this time, Gu Feichen was already sweating profusely, and the soaked medicinal soup had turned blue-black, and it was sticky, exuding an indescribable strange smell.

But Gu Feichen didn't care about all this! What he cared about was that the spiritual pressure in Bai Ruoxi's body had stabilized, and her palms were warm, and the soup in her wooden barrel had become pitch black and thick!

Obviously, the process of the 'wood spirit' releasing spiritual power has ended, the poison on Bai Ruoxi's body has been resolved, and he himself has improved his physique, and he has come to wash the marrow and change the tendons. As for this warm feeling on the body, it should be caused by the follow-up medicinal power of the elixir not being exhausted, and it will slowly calm down after it is completely absorbed.

This is also the reason why the eldest brother asked the two of them to retreat for nine days, otherwise the lack of absorption of medicinal power will leave future troubles.

In fact, Gu Feichen only guessed half right, the strongest wave of spiritual power impact has indeed passed!

However, Gu Changsheng's Tongue Spirit Removal Gu Disperse can not only remove Gu, but also treat the 'Wood Essence' as the main medicine and turn it into the 'Tongue Spirit Wood Spirit Washing Spirit Soup', which is equivalent to purifying the Wood Spirit Root for the two of them, and can also play a role in continuing to improve the physique.

In order to completely absorb the 'Tongue Spirit Wood Essence Cleansing Spiritual Soup', you need to retreat for nine days and absorb all the medicinal power, and of course there will be no less pain to be experienced during this period.

But Gu Feichen didn't know that this process would be so long, what he cared about was whether Bai Ruoxi's detoxification was successful and whether his physique had improved!

After another three days of non-stop suffering, Gu Feichen completely understood this, and only then did he understand what his eldest brother had been emphasizing to himself before the retreat, "Hold on!" Even if Bai Ruoxi wants to give up, you have to insist! You must keep your palms inseparable for nine days and nine nights, and you can't let go no matter how painful it is! ”

He asked himself to be a strong-willed man, but on the fifth day, he realized that this kind of ordeal was so desperate! The spiritual power gushing out of Bai Ruoxi's body was endless, and after five days, it was no longer as strong as the first day, but the numbness, soreness, swelling, pain and itching in his body had more than doubled.

The same severe pain, the same itching, but the intensity continued to increase, making Gu Feichen feel that the pain caused by each influx of spiritual power seemed to be heavier than the last time. And the impurities on his body continue to precipitate, and a thick layer of dirt has formed in the barrel, it seems that his qualifications are really enough!

For the first three days, both of them gritted their teeth and persevered, and there was something wrong. Of course, the pain in her body became more and more intense, Bai Ruoxi began to snort in pain, and by the fifth day, she couldn't resist it and wanted to give up.

As a result, Gu Feichen had to endure great physical pain while comforting his wife and encouraging her to persevere. In the remaining four days, the medicinal power continued to weaken, but it also had the same effect of purifying the marrow, prompting batch after batch of impurities in Gu Feichen's body!

But from the eighth day onwards, Gu very clearly felt that the spiritual power gushing out of Bai Ruoxi's body was rapidly declining, the pain on his body had also been reduced a lot, and the impurities were discharged less and less. But at the same time, the spiritual power in his body is also undergoing strange changes.

The tendons that were originally not smooth became unobstructed after bone refining and marrow washing. The spiritual pressure in his body has increased by a level, and he can easily accumulate pure wood spirit qi.

On the ninth day, the wounds in Gu Feichen's body began to heal, and the marrow washing was nearing the end. His whole body has changed from the original scorching hot stinging to the warm feeling of the warm winter sun!

At this moment, the passage staircase of the secret room was opened, and two pills flew down from above.

Seeing this, Gu Feichen finally let out a sigh of relief, which was a signal of the success of removing Gu and refining bones and marrow. After the two of them got the pill, they climbed out of the barrel, rinsed their bodies briefly, and immediately changed their clothes.

The two of them swallowed the pill almost at the same time, thinking that this was just an ordinary Qi Refining Pill, a tonic used to stabilize their own state.

However, as soon as the pill was swallowed this time, the spiritual power in the pill suddenly burst out. The meridians of the two of them were hot, and the person immediately fainted unconscious!

I don't know how long it took, when the two of them woke up hot, they were pleasantly surprised to find that their cultivation had actually improved, Gu Feichen had reached the seventh layer of qi refining, and Bai Ruoxi had reached the eighth layer of qi refining.

Gu Feichen, who was full of surprises, immediately wanted to jump up to vent the excitement in his heart! But as soon as he stood up, his whole body was hot again, and he fell to the ground again, which made him startled!

It turned out that although he succeeded in refining bones and washing the marrow, the physical strength consumed in his body was too great, and he was barely maintained by Bigu Dan in the past few days, and he still needed to supplement some meat to recover his strength!

Bai Ruoxi took out the beef jerky prepared in advance, and the two of them ate some, and Gu Feichen suddenly felt that his physical strength had recovered a lot after he was full!

Gu Feichen, who was immersed in the joy of the success of bone refining and marrow purging, couldn't help but immediately meditate on the spot, and the Dharma Determination continued over and over again, allowing his body to absorb the abundant spiritual energy provided by the Spirit Gathering Array.

I don't know how long I meditated, but when Gu Feichen and Bai Ruoxi sucked up the temporarily strengthened aura of the Spirit Gathering Array, they finally woke up from a wonderful experience.