Lin Mu looked at the blue flame that was burning above Shaoyan Qianyu's palm. He could tell that it was a Qi flame, but it was quite different from his own that he had ignited before when he was purging the impurities from his body.

His Qi flame was yellow in color but this one was blue. Another thing that was different was the method by which Shaoyan Qianyu had ignited it. The level of compression was much higher than his.

"What is this senior?

" Lin Mu questioned.

"That is an intermediate rank Qi flame. It is better than the low rank Qi flame that you made. An intermediate rank Qi flame is one of the basic requirements for Peak rank pills.

" Xukong answered.

"I see… wait does that mean she is about to refine a peak rank pill?!

" Lin Mu wondered.

"Hmm… could be, why don't you wait and see.

" Xukong replied.

Lin Mu nodded his head and watched as Shaoyan Qianyu began to refine. She opened the lid of the cauldron with her spirit sense and levitated it to the side. She then picked up a few spirit herbs and dropped them inside.

Then she placed her palm onto the cauldron and the blue flame started swirling around the cauldron, heating it up rapidly. In less than thirty seconds, the bottom of the cauldron was already red hot.

~shua~

Smoke was released from the top of the cauldron as the herbs in it were getting burned. But they did not burn up directly, rather they first started to shrink due to the heat which caused them to release their juices.

These juices were able to bear the heat better than the herbs themselves and dripped to the center of the cauldron. Once the juice of the herbs was completely released, the herbs themselves turned into ash due to the intense heat.

But just as the ash was about to fall back into the juice, Shaoyan Qianyu flicked her other hands and executed a hand seal, causing a gust of wind to swirl inside the cauldron. This gust of wind swept away the ash out of the cauldron and deposited it into a small basket at the side.

But the function of the wind did not end just here. The wind also dissipated some of the excess heat of the cauldron and prevented the juices from getting burned. The woman then controlled the blue flames again and reduced their intensity.

She picked up a few more ingredients and tossed them into the cauldron, using the same method as before. But there was still a difference here, such that the timings and periods of cooling were different. Even the time at which the herbs were added changed.

Some of the herbs were refined to extract their juices, while some of them were allowed to directly mix with the juice at the bottom of the cauldron. For some, the ash was removed while for others the ash was allowed to mix with the juice.

Overall, Lin Mu got to witness the different methods that were used in the field of Alchemical Pill refinement. He paid his full attention to this, even though he knew he was spending the precious time he had to check the other vaults.

This was not something he could witness often and thus did not want to miss out on it. Besides Pill refinement was something that even Senior Xukong did not know much about. Even if he knew some theories behind it, he actually did not know how to refine alchemical pills.

Thus Lin Mu watched Shaoyan Qianyu refine with rapt attention. Two hours had already passed and she had used up a lot of herbs and other materials. Then finally came the turn of the ingredient that was kept in the brocade box.

She carefully opened the brocade box and pulled out a large red mushroom from it. It was the size of a palm and was as thick as a finger.

"Is that… Vitalizing Red Lingzhi?

" Lin Mu muttered upon recognizing the herb.

He had read about a lot of spirit herbs and alchemical materials from the records and could now identify them by name and appearance at least. This Vitalizing Red Lingzhi was a High rank spirit herb and took over five hundred years to grow.

If a cultivator were to consume this directly their injuries would heal rapidly and if they had experienced blood loss, it would also be remedied. The Vitalizing Red Lingzhi had the medicinal property of stimulating Blood production in the body.

Another thing that was different about the Vitalizing Red Lingzhi was that unlike other herbs, it did not have a specific aroma. Even if one placed it next to their nose and took a deep whiff, they would not smell anything. This was one of the reasons why it was hard to find it in the wild.

Even cultivating it artificially was a pain and took many decades of effort before the specific conditions required for it were made. Only after these conditions were met would the Vitalizing Red Lingzhi be able to grow.

Lin Mu had not seen any of them growing on the path here, which meant that this Vitalizing Red Lingzhi was likely found in the wild, which only increased its value by a great margin.

"What kind of a pill is she making such that it would require a valuable herb like this?

" Lin Mu wondered.

While Lin Mu had learned about various herbs, he still did not know what kind of pills would be refined from them. There were simply far too many different formulae such that a single pill could have multiple permutations and combinations to make the same thing.

Lin Mu could only see the end result to know what she was making. He also did not dare to check what kind of a pill it could be, as that would mean taking his attention off her.

The woman stared at the herb in her hand carefully for a few seconds before finally dropping it in the cauldron.

But the moment the Vitalizing Red Lingzhi touched the liquid at the bottom, a violent reaction happened.

~BOOM~