These things look ordinary, but they all have special powers, and they emit light and evolve into various forms of figures, including birds and beasts, as well as human monsters, and so on.

"Brother Yan, where did you get these things?" Han Feng asked, his eyes were strange, he pondered for a while, and then asked.

"By chance, I got it from an ancient cave on an island, including the Danfang, from there. Yan Yijian explained.

"You're unlucky!" Han Feng said with emotion.

"It's all some miscellaneous things, it's useless, I wanted to sell it before, but those merchants' bids were too low, and I was too lazy to sell, so I went to participate in the trade fair of the Muyang Chamber of Commerce." But fortunately, I went, otherwise I wouldn't have been able to make friends with Brother Ge, and I wouldn't have been able to get the Derivative Spirit Biochemical Pill. Yan Yijian said with a smile.

"I'm a little interested in these five things of yours, but I'm not sure that the alchemy master can refine five Soul Derivation and Biochemical Pills, I don't know if they can be resold to me, I can exchange them for other things. Han Feng asked.

"It's okay, you take one of them first, and after I prepare the spiritual materials needed for alchemy, I will notify you to come and get it from me, as long as you and I are still in the area of Penglai Main Island, we have contact with each other, and we are not in a hurry. Yan Yijian said with a smile.

"Brother Yan is so refreshing, then I might as well be respectful. Han Feng directly asked for the gourd, and put it in the storage ring along with the pu fan.

"I'm leaving, waiting for your notice. Han Feng arched his hand and said goodbye.

Yan Yijian put away those things, nodded, bowed back, and said, "There will be a period later." ”

......

After Han Feng walked out of the Longyuan Inn, he went straight back to his unknown inn, rearranged the shielding formation, entered the alchemy room, and took out the pu fan and the gourd.

After he carefully checked it, he found that there was no potential problem, and he was not at ease, so he communicated with the remnant talisman, attracted its power to come out, and after carefully probing it, there was really no problem, and then he took out the Five Elements Rune Treasure, and after urging it, let it absorb their original power by itself.

Han Feng exuded his soul power and observed silently, and found that the pu fan and the gourd were emitting a trace of special green light, like life, slowly wriggling, trying to resist the devouring of the Five Elements Rune Treasure, but with his assistance, he could not do anything, and all of them merged into the Five Elements Rune Treasure, allowing the internal cracks to gradually recover.

It seems that these two things don't have much green light, and it is just a stick of incense, and they are absorbed by the Five Elements Rune Treasure and become a dull object.

"What is that trace of green light, I wonder if its source is in the ancient cave in Yan Yijian's mouth?" Han Feng secretly guessed in his heart.

After trading with Yan Yijian a few more times in the future, they have mutual trust, but they can probe his tone, and maybe they can get the location information of that ancient cave.

He settled down in his heart, so he didn't think much about this problem, and then took out the bag of spiritual materials for refining the Spirit Derivation and Biochemical Pill, poured it out and looked at it, and it was indeed eight parts.

Originally, according to the rules, how many spirit pills were refined, he had to give back Yan a sword as many as he could, but considering the difficulty of the Soul Extraction and Biochemical Pill, in the oath he made before, he promised that if it was successfully refined, no matter how many pieces, he only needed to give the other party one, so he had fulfilled his oath and could use these spiritual materials of the other party at will.

Naturally, he carefully reviewed these spiritual materials again, so as not to be manipulated.

After confirming that there was no abnormality, he waved one hand, and the three-color stone flew out and fell into the bottom of the Dan furnace, opening the furnace for alchemy.

......

Time flies, and a month has passed before he knows it, and Han Feng has finally refined the Erhua Grade Spirit Biochemical Pill through ten attempts, and the medicinal power has doubled dramatically.

After he took it, his mana cultivation had really improved a lot, but there was still a long way to go before he broke through the bottleneck of the late stage of psychic.

He believed that as long as he refined the Five-Flower Level Derivative Spirit Biochemical Pill and reserved a certain amount, over time, he would definitely be able to advance smoothly.

It's a pity that the existing spiritual materials are still too few to practice repeatedly, and it is difficult for him to improve again, just relying on the practice in the soul sea, it is difficult to truly replace the practical operation after all.

Han Feng sighed secretly, there was no way at the moment, he could only wait for the news from Yan Yijian's side, it was not appropriate for him to purchase the materials of the Derivative Spirit Biochemical Pill on a large scale now, otherwise he would be targeted, so as to find out the so-called alchemy master in his mouth, maybe his true identity would be exposed.

During this period, Fang Hanyuan also looked for him several times, but he politely refused and did not agree to go to the Black Sea with them.

At this moment, Wang Quan summoned him and asked him to gather at the Muyang Chamber of Commerce.

Han Feng frowned, he didn't know what Wang Quan was looking for him, but the other party was not an ordinary person, he was also the manager of one party's forces, and dealing with him well would help him purchase some things.

He immediately went as a disciple of the inner sect of the Yuxian Sect, and soon went to the main hall of the Muyang Chamber of Commerce, and saw Wang Quan waiting at the gate.

"Brother Wang, I don't know what happened when I was summoned in such a hurry?" Han Feng said with a smile.

"Stop, what is summoning, you are the inner disciple of the Feather Immortal Sect, I still have to rely on you!" Wang Quan scolded with a smile and raised his hand to block it, looking flattered.

"What is that going on?" Han Feng stopped talking nonsense and asked straight to the point.

"Don't worry, go up to the third floor and talk again, in short, it's a good thing. Wang Quan smiled slightly.

Han Feng nodded, followed him into the hall, and went up to the private room on the third floor, but he kept thinking about the reason in his heart.

"Come, drink tea first. After the two of them sat down, Wang Quan's subordinates came in to pour tea and water, and the service was considerate.

Han Feng saw that he was calm and relaxed, so he was not in a hurry, silently took a sip of tea, and praised a good tea.

"Of course, this is Lu Xiang Tea, and a cup of tea will cost 10,000 spirit stones!" Wang Quan said with a smile.

Han Feng listened quietly and no longer asked him why he was looking for him.

"Brother Lai, I recently heard that you made a deal with Yan Yijian and really helped him refine the Derivative Spirit Biochemical Pill, right?" Wang Quan asked coldly.

Han Feng's face was calm, and he said slowly: "That's right, it's true, but he shouldn't know that I'm an inner disciple of the Feather Immortal Sect, Brother Wang, don't leak it out." ”

Since he traded with Yan Yijian, he knew that this news could not be hidden, it was originally semi-public, and there was no need to cover it up.

"Of course not, our Muyang Chamber of Commerce has always done a good job of protecting the privacy of customers, and it will never be leaked, you can rest assured of this!" Wang Quan hurriedly said.