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After he thought for a while, an idea flashed in his mind, and he said: "Qingxin Grass can be used to refine Qingxin Powder. This herb is the main ingredient of Qingxin Powder. Qingxin Powder and Qingxin Pill are both fifth-grade, but these two kinds of pills are completely different. If combined with my pill fire, I can refine a flawless pill."

As soon as this thought came to his mind, Hisoka took action immediately. He took out a piece of Purifying Grass and threw it into the fire.

A wave of hot air surged out, and the Qingxin grass quickly turned into liquid, rolling inside. Soon after, the Qingxin Powder began to melt and finally formed a ball of medicinal liquid.

This ball of medicinal liquid contained many impurities. After Xiso decomposed this ball of Qingxin liquid into liquid, he put it into the alchemy furnace.

Xi Suo's technique was extremely skillful, and Zhao Yufan's eyes were filled with shock.

Zhao Yufan had seen these things in some ancient books, but he had never witnessed how Xiso could control them so skillfully. Even he couldn't do it. Xiso was really amazing.

After these impurities were dissolved by the Qingxin Liquid, they turned into crystal clear pills. These pills were all light blue in color, and you could tell at a glance that they were high-level pills.

"This time, should it be enough?" Hisoka murmured.

Then, Xiso took out another pill and put it into the furnace. This time the pill was a marrow cleansing pill. His method was exactly the same as Zhao Yufan's. He also put the liquid medicine into the furnace and then dissolved it into liquid. This pill also became a high-level pill.

"This……"

Seeing that Xi Suo dissolved the medicine into liquid so easily, and it was a high-level medicine, Zhao Yufan felt a black screen in front of his eyes and almost fell to the ground.

He never thought that Hisoka would be so powerful, he couldn't believe his eyes.

Chapter 650: Hisoka's Medicine Cauldron Loses Control

"A strong sense of jealousy rose in his heart. How could this kid be so powerful? Is his luck really that good? Isn't this kind of luck too good to be true?"

Li Hao was also shocked by Xi Suo's performance. He didn't expect that Xi Suo could actually refine such a pill. This pill was a fifth-grade high-level pill. Even he couldn't melt the liquid so thoroughly. How did Xi Suo do it? This is too abnormal, isn't it?

"All right."

Xi Suo looked at the alchemy furnace and was about to open it when the medicine cauldron suddenly began to move. The medicine liquid in the cauldron began to boil and a heat wave rushed out.

"Oops, I forgot this is a high-level elixir."

Xisuo's face changed slightly. Holding a few spirit stones in his hand, he began to channel his true energy, trying to stop the boiling liquid from continuing to flow out. However, the liquid kept flowing out and getting hotter and hotter. The medicine cauldron was about to explode.

Hisoka's face turned pale instantly, he gritted his teeth, infused his body with true energy, and then began to resist the explosive power of the medicine cauldron.

But the power of the medicine cauldron became stronger and stronger, and Hisoka could only watch the cauldron explode and blow himself away.

He suffered both physical and mental injuries and his injuries were very serious.

"boom!"

A huge explosion was heard, and all the medicine liquid in the medicine cauldron exploded. The whole medicine cauldron was shaking violently, and cracks appeared on the medicine cauldron.

The medicine cauldron is about to break!

"Oh no! How could this medicine cauldron be so fragile?"

Xisuo was horrified. If the medicine cauldron was broken, he would be seriously injured. His cultivation was not high enough and he could not withstand such an explosion and would definitely die.

Xi Suo tried hard to control the medicine cauldron, but it was too big and his control could not stop it. Instead, it became more and more violent and seemed to be about to collapse.

Beads of sweat appeared on Xisuo's forehead. This medicine cauldron was the first fifth-grade elixir he had refined. Was it destroyed just like that?

He was unwilling to give up! He wanted to refine another batch of fifth-grade elixirs.

His fingers kept tapping on the medicine cauldron, his face became paler and paler, and his breathing became rapid.

This medicine cauldron is indeed of fifth grade. Both its alchemy skills and operation have reached fifth grade level.

However, fifth-grade elixirs are not so easy to refine.

Generally speaking, the alchemy skills of a fifth-grade alchemist are just entry-level, and they need to accumulate knowledge slowly.

Under Hisoka's control, the medicine cauldron gradually calmed down and stopped shaking, and the liquid inside the cauldron was also slowly decreasing.

Finally, all the liquid in the medicine cauldron was consumed, but a thin layer of iron sheet still remained on the wall outside the cauldron.

"call."

Hisoka let out a breath. Even though he failed in refining the elixir this time, he still gained a lot.

"What went wrong? Was it because my heat was not right? Or did I use the wrong ingredients or was I missing some ingredient?" Hisoka pondered.

Xi Suo looked in the direction of Zhao Yufan and Li Hao. The two were still trying hard to control the medicine cauldron. "It seems that I was too impatient." Xi Suo concluded.

After failing once, Xi Suo changed the medicine cauldron and started selecting herbs again.

The medicinal herbs provided in the competition were not ordinary ones, but top-grade ones. These herbs all had extremely special properties, and he needed to use his powerful soul power to compress them.

Chapter 651: What medicinal herbs can replace Seven Star Grass?

Xi Suo used the same materials and fire as before to refine it again, and the medicine cauldron showed strange movements again.

"Which ingredient is missing? What is the recipe for the Marrow Cleansing Pill?"

Xi Suo was a little anxious. In the process just now, he kept changing the medicinal materials and kept trying, but all in vain. The feedback from the medicine cauldron was always unsatisfactory.

"Is it because I don't understand the properties of medicinal herbs? Or is it because the heat is insufficient? Or is there another reason?" Xi Suo fell into deep thought.

At this time, the medicine liquid inside the medicine cauldron began to boil again, and a terrifying energy wave spread out.

"What should I do? The medicine cauldron is moving strangely again!" Xi Suo lowered the temperature while thinking of a countermeasure.

Suddenly, Xi Suo noticed a medicinal herb on the table, Mu Qing.

"Got it!" A flash of enlightenment suddenly came to Hisoka's mind.

"I will put this medicinal material in first, then speed up the combustion of the medicine cauldron, make the temperature of this medicinal liquid higher, and then speed up the fire. This medicinal liquid can make the temperature of the medicine cauldron lower and lower, and finally it will completely melt in the medicine cauldron!"

Hisoka slapped his head and came up with an idea.

"Oh, there is another herb called Seven Star Grass! It is a medicinal herb that can assist in refining!"

"But I don't have the Seven Star Grass right now." Xi Suo murmured. "What should I do? Is there any herb that can replace the Seven Star Grass?!" He thought carefully.

Suddenly, his eyes fell on the pile of discarded medicinal herbs next to the medicine cauldron. "If we can find that pile of medicinal herbs and add this pile of medicinal herbs, maybe we can restore the temperature of the medicine cauldron to normal, or even make it higher."

Xi Suo immediately walked towards the medicine cauldron.

"Hey, there is!"

When Xi Suo approached the pile of medicinal herbs, he suddenly found that there was a black shadow wrapped in the pile of medicinal herbs, and that black shadow was still wriggling constantly, as if there was a living thing swimming inside.

Hisoka immediately used his mental power to investigate the dark shadow.

"What...what is this?"

When Hisoka's spiritual power touched the black shadow, he felt like he was electrocuted and his whole body became paralyzed. He quickly used his consciousness to block his sea of ​​​​consciousness, which prevented his spiritual power from continuing to explore, but the spiritual power still could not penetrate the defense of the black shadow.

The shadow's defense is very powerful, it's not ordinary stuff!

However, Hisoka had already seen the appearance of the black shadow clearly. The black shadow was a small snake, which was constantly twisting and struggling, trying to escape from the medicine cauldron.

"So this is the poison of the Seven Star Grass." Hisoka suddenly realized.

The toxin of the Seven Star Grass is a rare and deadly poison. Without an antidote, it would be difficult for any alchemist to resist this poison. Therefore, its value is extremely precious.

However, Seven-Star Grass also has a fatal flaw, which is that the unrefined toxins are difficult to control, so the medicinal materials will become mushy.

But the toxin of Seven-Star Grass is different. Once it is extracted, it becomes a good medicinal material that can be used stably, but most people don’t know it.

"It seems that I am very lucky."

A hint of joy appeared on Hisoka's face.

"The poison of this Seven Star Grass is very strong. If my soul power is not strong enough, I can't easily remove it."

"Let me try it first!"

Xi Suo threw the poison from the Seven Star Grass into the medicine cauldron.

Chapter 652: The game is over, and the referee's comments begin

Xi Suo did not refine the elixir immediately. Instead, he used his mental power to control the poison in the Seven Star Grass to rotate continuously, allowing it to continuously absorb the medicinal fragrance in the medicine cauldron.

As time passed, the poison of the Seven-Star Grass slowly melted away, and the strong aura inside the medicine cauldron became stronger and stronger, and hotter and hotter.

Xi Suo also held his breath, feeling the changes in the medicine cauldron.

Finally, this time, the aroma of medicine from the medicine cauldron completely exploded, and the air in the entire room was filled with the thick aroma of medicine. Even through the medicine cauldron, Hisoka could feel the strong aroma of medicine.

"It's done!"

"Haha! It's done!"

Hisoka laughed, his face turned red with excitement, and his eyes radiated ecstasy.

“Haha! I refined it!” Xi Suo shouted, “The elixir I refined this time should be the Marrow Cleansing Pill!”

Xi Suo took out the medicine cauldron and looked at the pills in it, feeling very excited.

"What is the success rate of this marrow cleansing pill?" Hisoka's eyes sparkled.

"I don't know, but I can be sure that the elixir refined this time is definitely the Marrow Cleansing Pill!"

Xi Suo took out a few marrow cleansing pills, each of which exuded a strong fragrance.

There are three pills of Xisui Dan, two yellow and one green.

Hisoka took out three marrow cleansing pills and poured them into three boxes respectively.

"Time's up! Stop refining the elixir!" the referee announced.

Xi Suo, Zhao Yufan and Li Hao all stopped what they were doing, but their reactions were different.

Li Hao stopped refining the elixir early in the morning and was cleaning the table.

Hisoka was stuck and stopped refining the elixir.

Only Zhao Yufan seemed a little flustered, and only put the pills into the box at the very end.

The boxes of the three people were collected by the referee and handed over to the elders of the Alchemist Guild for review. Xi Suo, Zhao Yufan and Li Hao could only wait on the stage.

Li Hao had a confident expression on his face, Zhao Yufan had an expectant expression, and Hisoka looked extremely calm.

An hour has passed...

The referee took back the three people's pills and placed them on the table in the competition venue. The elders of the Alchemist Guild also came down from upstairs.

Their eyes were fixed on Li Hao and Zhao Yufan's pills.

Zhao Yufan's pills are the most common, they are only used to replenish physical strength and mental power, but Li Hao's pills are different, this pill is composed of marrow cleansing pills, although the quality is not high, it contains extremely huge medicinal effects.

The judges were surprised.

In this way, Hisoka's chances of winning will be even smaller.

"This pill." An elder paused, "But this marrow cleansing pill is only of the fifth grade, just passing level." The elder said, pointing to the box containing the pill refined by Zhao Yufan.

Hearing this, Zhao Yufan's expression froze instantly.

A sneer also appeared at the corner of Li Hao's mouth.

His goal was to refine a sixth-level elixir, while Zhao Yufan's goal was to refine a seventh-level elixir, but now, their gap had become a huge gap.

"Good," the referee commented again.

"Hmph!" Zhao Yufan was unwilling to be outdone.

"Zhao Yufan, don't you want to refine a seventh-level elixir?" A sarcastic smile appeared on Li Hao's face.

Zhao Yufan looked at Li Hao with anger in his eyes, but he didn't dare to speak.

"Next is this pill. Although it is a sixth-grade marrow cleansing pill, the pill pattern is not particularly outstanding."

Chapter 653: Li Hao's Comments on the Pills Made by Xi Suo

After the referee finished speaking, he picked up Li Hao's pill and looked at it carefully.

"My Danwen is okay!" Li Hao was a little confused.

"The pattern on this pill is too shallow. If the refining fails, your pill will be waste!" The referee handed Li Hao's pill back to Li Hao.

"What?" Li Hao was shocked and his face turned pale.

Li Hao never thought that the marrow cleansing pill he refined would be called waste!