Li Feng quietly returned to the Baoshi Town, came to the Black Stone Tower, and found Master Poison Xi who was lying on the top of the tower.

"Master, why haven't you studied the potion?" Li Feng walked over and asked curiously. Every time he came over, Master Du Xi was busy studying the potion, and he had never seen him as leisurely as he is now.

Master Du Xi glanced at Li Feng and said, "Are you waiting for you to come."

Li Feng's eyes moved and said in surprise: "Master Du Xi has predicted that I am coming to seek help, it's so amazing!"

"Hehe, you kid is so good. He was hunted by the empire and became friends with Jonshi. I remember that your inheritor's mission is to kill Jonshi. Do you want to give up your inheritor qualifications?" asked Master Du Xi, with a hint of inquiry on his old face.

"If the inheritor mission must have me kill Jonsi, then I have to give up." Li Feng said seriously.

Master Du Xi stood up from the chair and said, "Boy, you are lucky. The inheritor mission has been changed. Tell me, what potion do you need when you come to me this time?"

Li Feng's face was happy and immediately said, "Master Du Xi, I don't know if you have a top-level hidden potion here. I want to go to Xingfeng City."

"Yes, there are, but I won't give it to you for nothing." Master Du Xi said.

"What does the master need me to do?" Li Feng asked, amazed in his heart. Master Du Xi is so powerful that he can even take out the top potion.

"Do you still remember the corpse of the Blood Evil Bone Demon you sent last time?" asked Master Du Xi.

Li Feng nodded and said, "Of course I remember that I came here this time to learn about the master's research progress."

Du Xi looked at Li Feng and said, "I have almost studied the body of the Blood Evil Bone Demon and have gained a lot. Now there is only the last problem left that has not been overcome. If you can serve as an experimental subject for me, it may be solved. Then I can give you generous rewards, including the top-level potion formula you need now!"

Li Feng's face stagnated and said with some embarrassment: "Master, why do you want me to do the experimental subject again? Can't you find other animals?"

He had tasted the taste of being a master Duxi experimental subject before, and it was definitely a terrifying memory that he didn't want to recall. The whole process had to be destroyed and tortured by various forces, and it made people feel scared if you think about it.

"Why, don't you dare to come?" asked Master Du Xi, with a somewhat contemptuous tone.

For the reward, I took the initiative! When I thought of the top potion formula as a reward, Li Feng's eyes became firm. He gritted his teeth and said, "Why don't you dare?"

Master Du Xi nodded with satisfaction and said, "Very good. As an alchemist, you should not be afraid of alchemy experiments, otherwise you will never reach the level of a top alchemist. Come with me, and we will start the experiment immediately."

So, Li Feng followed Master Du Xi into a huge laboratory at the bottom of the tower.

In this laboratory, there are many samples of giant beasts, and even dragon corpses, with many experimental equipment inside. It can be seen that this is a very important laboratory, much more powerful than the laboratory on the top of the tower.

"I have almost studied the power of blood evil, and have found the response method, but there are still defects and need to be investigated in depth. I will inject the power of blood evil into you later to conduct experiments. The process may be a bit long, so you have to endure it."

"I can." Li Feng nodded.

Soon, Master Du Xi's experiment began. It was not until now that Li Feng understood what was going on when the process was a bit long.

After eight hours of continuous suffering, Master Du Xi's experiment was finally successful, and Li Feng was able to get rid of the experiment.

"If I promise to do the experimental subject in the future, I will just slap my mouth a hundred times!" Li Feng thought depressedly in his heart, and made up his mind to never do the experimental subject again. No matter what the reward is, we must firmly believe.

"Very good, boy, this time you completed my experiment gloriously again, allowing me to successfully find a stable solution to the power of blood evil. This is the reward you deserve, take it."

Master Du Xi waved his hand and fired a green ball of light towards Li Feng.

"bite!"

System prompt: Congratulations on assisting Master Duxi to complete the research on the Blood Evil Bone Demon. You have obtained [Master Duxi’s Satisfaction Gift Pack], reputation value +1000, experience value +5000.

Li Feng opened the package and saw a big green gift bag lying inside, emitting a treasure light.

"Master Du Xi, that top hidden potion..." Li Feng asked.

"I have given you the formula. You can find medicinal materials to refine. If nothing else is done, you can escape. Don't disturb me to refine a brand new potion." Master Du Xi said, picking up the data obtained from the experiment just now and then studying it, and soon entering the state of drug research.

Now that the things have been received, Li Feng didn't stay for too long and left the Black Stone Tower.

After finding a quiet place, Li Feng opened the [Master Du Xi’s Satisfaction Gift Pack], and he obtained a lot of good things: a light golden refining furnace, two top potions formulas, two bottles of top potions, and three top potions.

Li Feng first picked up the light gold refining furnace. The furnace was exquisite in appearance, well-made, and looked very good.

[Golden Refining Furnace] Top-level refining furnace, very precious, can improve the success rate of potion refining. Effects: Primary potion success rate +100%, intermediate potion success rate +50%, advanced potion success rate +20%, top potion success rate +10%.

"Good thing!" Li Feng was very surprised. The refining furnace he was using now was ordinary goods, which could only increase the success rate of primary and intermediate potions. This gold refining furnace can increase the success rate of advanced and top potions. It is a top-quality refining furnace.

Li Feng’s current alchemy is advanced, and the basic success rate of refining advanced potions is 30%. In addition, he also learned the top skill of [Alchemy Technique], which has an additional bonus to the success rate of refining potions. The success rate of advanced potions can reach 50%, and the success rate of top potions is 20%.

Now with this golden refining furnace as an auxiliary, Li Feng's success rate of potion refining can be improved by a big step. The success rate of high-level potion is 70%, and the success rate of top-level potion can reach 30%. This is a very amazing success rate and has huge potential value!

After putting away the golden refining furnace, Li Feng took out the two top-level potion formulas and looked at it:

[Top Investigation Recipe Formula] Top Investigation Recipe Formula, you can learn to refine the top Investigation Recipe [Top Investigation Recipe Formula] Top Investigation Recipe Formula, you can learn to refine the top Investigation Recipe Formula after learning. It is very rare. At present, few people probably have it. Now I get two at one time, which is very powerful!

Two white lights flashed by, and Li Feng learned these two top potion formulas. In this way, coupled with the [Raging Flame Burning Potion Formula] he learned from the Qiongsi treasure house before, he now has three top potion formulas, which are extremely sharp!

Next are the three bottles of top-level potions. No matter when it is at that time, top-level potions are very rare. Not only can they be manufactured, but the success rate is also quite low and the number is extremely limited. For example, Li Feng, a monster with a successful refining success rate of 30%, can't find many in the entire Shenlin Continent.

[Drunk and Wind Potion] Top potion, after taking it, it will enter a strange drunk state, physical attack +30%, wind class attack +30%, attack speed +50%, movement speed +50%, dodging probability +20%, time lasting 30 minutes, cooldown time 6 hours [Bright and Brilliant Potion] Top potion, after taking it, light class attack +30%, all surname anti-school +500, all damages currently being suffered, ignore all negative states, have a 30% chance of immune control skills, time lasting 10 minutes, cooldown time 6 hours.

The effects of top potions are very powerful. These two potions can greatly improve the character's strength within a certain period of time and can play a huge role at critical moments.

The drunk Qingfeng potion is a kind of Feng surname. Li Feng first thought of Jiangnan Guyi. He was going to exchange this top potion with Jiangnan Guyi. As for the bright light potion, it was completely the top potion prepared for Meng Qingling, the magician of Light. This beauty himself is very strong. If she gets the help of this potion, it will become very terrifying!

Now, there are only three top medicinal herbs left without looking at them. Li Feng is in a good mood and directly checked the information about these medicinal herbs:

[Tianyin Grass] Top-level medicinal materials, the main material for refining top-level hidden potions, is very rare.

[Ji Lei Ling Fruit] Top-grade medicinal materials, the main materials for refining top-grade speed-growing potions, are very rare.

[Black Scale Fragrant Wood] Top-level medicinal material, the main material for refining the Dark Void Immortal, is extremely precious.

Li Feng was very lucky. Among these three top medicinal plants, there was a material to refine the top hidden medicine, so that he would not have to spend time looking for this top medicinal plant.

After reading these treasures, Li Feng opened the friend panel, found Meng Qingling's name, and sent the picture of the Guangming Guidance Potion: "Beauty, please evaluate this potion."

"Wow, handsome guy, you actually obtained the legendary top potion, please give me medicine!" Meng Qingling quickly sent a reply.

"Beauty, do you want it for nothing?" Li Feng asked.

"Tell me, Lord, what do you want?"

"Hehe, beauty, kiss me and I'll give you this potion."

"Bad guy Li Feng, I won't design equipment for you anymore!"

"Well, beauty, you make me a wonderful dinner, is that OK?"

"Of course, this bottle of potion is so beautiful, I want to keep it for collection!"

“…”

Li Feng was speechless. The bottle of the bright light potion was very delicate, and it emitted a brilliant golden light throughout, full of artistic atmosphere. No wonder Meng Qingling liked it so much.

"Remember the wonderful dinner!" Li Feng reminded him and mailed the bright light potion to Meng Qingling.
Chapter completed!