Han Xing couldn't identify Immortal Herbs.
But the Octagonal Mysterious Ice Grass and Infernal Delicate Apricot grew respectively in the Fire Spring and Ice Spring of the Ice and Fire Yin Yang Eye.
There were only these two plants in the Ice and Fire Yin Yang Eye, so he could still recognize them.
Before coming to the Ice and Fire Yin Yang Eye, he had already prepared jade utensils for harvesting Immortal Herbs.
Now that there was nothing else to do, he naturally chose to pluck and consume them without hesitation.
Of course, the main reason was that he was worried Radiant Douluo wouldn't let him enter the Ice and Fire Yin Yang Eye after returning.
After all, he knew what the Ice and Fire Yin Yang Eye could do, but Radiant Douluo didn't.
Chrysanthemum Douluo could recognize Immortal Herbs, but whether he knew about the Ice and Fire Yin Yang Eye was another matter.
Just as Han Xing was refining the Immortal Herbs with the Ice and Fire Yin Yang Eye,
Chrysanthemum Douluo and Radiant Douluo soon arrived in the valley.
Seeing Han Xing in the Ice and Fire Yin Yang Eye, Radiant Douluo was startled.
Fortunately, Chrysanthemum Douluo spoke up just then.
"Senior, don't worry. This kid must have taken an Immortal Herb and is using the spring to refine it."
"This spring is so terrifying that even I wouldn't dare touch it lightly."
Radiant Douluo asked in surprise, "Immortal Herbs can actually withstand such terrifying heat and cold?"
"As far as I know, there are two Immortal Herbs called the Octagonal Mysterious Ice Grass and Infernal Delicate Apricot. Taken separately, they're highly poisonous."
Chrysanthemum Douluo said, "But taken together, they're greatly nourishing. It's just that most people would have a hard time refining them."
"Although I don't know what this spring is, the two Immortal Herbs I just mentioned need to grow in extreme heat and extreme cold, respectively."
"Perhaps Han Xing found these two Immortal Herbs and is using the spring to refine their medicinal power."
Hearing this, Radiant Douluo looked a little helpless.
"So this kid was afraid we wouldn't let him into the spring after we got here?"
"That's possible." Chrysanthemum Douluo nodded.
"All right. In that case, how about we wait here for a while?"
Once he was sure Han Xing was safe, Radiant Douluo calmed down.
Chrysanthemum Douluo naturally didn't refuse.
He hadn't expected much from this trip, only hoping to find some clues.
Finding the Ice and Fire Yin Yang Eye and Immortal Herbs was a pleasant surprise.
Now that the Immortal Herbs were right before him, waiting a while was no problem.
Still, Chrysanthemum Douluo didn't sit idle while they waited.
He began examining the surrounding Immortal Herbs and listing all those that could be used.
The first one to catch Chrysanthemum Douluo's attention was the Singular Velvet Sky Chrysanthemum, which corresponded to his Martial Soul.
Seeing this Immortal Herb right in front of him, Chrysanthemum Douluo couldn't help swallowing.
If he took this Immortal Herb, his Martial Soul would undergo a transformation, and becoming a Limit Douluo in the future might not be out of reach.
Then he looked elsewhere.
Aromatic Silk Beauty, Eight-Petal Immortal Orchid, Cockscomb Phoenix Sunflower, Aromatic Silk Beauty, Narcissus Jade Bone, Full Moon Wearing Autumn Dew...
They were all top-grade Immortal Herbs.
Besides those, there were many top-grade medicinal plants that weren't Immortal Herbs but had effects nearly as potent.
"Senior, your Martial Soul is of the ice and light elements, right?" Chrysanthemum Douluo suddenly asked.
Radiant Douluo was puzzled by the question, but still nodded.
"Senior, do you see that ice-blue flower over there? That's the Cold Star Ice Jade Flower, a powerful Immortal Herb."
Chrysanthemum Douluo pointed to an area in the valley that lay in shadow.
There stood an Immortal Herb with an icy blue, glassy sheen throughout. Its petals were shaped like arrow feathers, and tiny, sparkling ice crystals floated above its stamen.
There wasn't a single other plant in the entire shadowy area.
"The Cold Star Ice Jade Flower carries the power of extreme cold. After taking it, you'll have to endure that cold as it attacks your body. If you can't withstand it, you'll die from the cold."
"But if you can endure the extreme cold, your Martial Soul will transform."
"If your Martial Soul is ice-type, it can even become an ultimate ice-type Martial Soul."
Radiant Douluo's eyes lit up at this.
An Immortal Herb that could transform a Martial Soul...
"Your eye seems to have been injured by your Martial Soul's backlash. If you take the Cold Star Ice Jade Flower, it might heal that backlash."
Chrysanthemum Douluo pointed to Radiant Douluo's eye, which was covered in frost.
Because of the extreme cold, Radiant Douluo usually didn't dare open that eye.
"If it can be healed..."
Radiant Douluo looked at the Cold Star Ice Jade Flower, delight growing on his face.
While the two of them were talking, Han Xing slowly woke up.
Feeling the changes within his body, his face lit up with delight.
Under the impact of the two Immortal Herbs' medicinal power, his Soul Power had already reached Level 39.
Judging by the strength of the medicinal power within him, it probably wouldn't take more than a few days for him to reach Level 40.
If he could fully digest the medicinal power of the two Immortal Herbs, he should be able to reach Level 45 within half a year.
"You brat, you're awake, so hurry up and get out!" Radiant Douluo's voice rang out.
"I was gone for barely any time, and you went into the Ice and Fire Spring on your own."
Hearing the reproach in Radiant Douluo's voice, Han Xing understood that he was only worried.
"Hehe, Teacher, I didn't want you to worry."
"I thought I'd be done absorbing them before you got back, but it took a little longer than I expected."
"But don't worry, Teacher. I'm completely fine."
As he spoke, Han Xing climbed out of the spring, took a set of clothes from his Storage Soul Tool, and changed.
"Your strength has reached Level 39. Is that all the Immortal Herbs did?"
Feeling the changes in Han Xing's body, Radiant Douluo couldn't help frowning.
An increase of one level was impressive, but entering the Ice and Fire Yin Yang Eye was extremely dangerous.
That gain alone wouldn't have been worth the risk.
"Improving my strength is only a secondary benefit. Once I refine the medicinal power left in my body, I'll reach Level 45 before long."
Han Xing shook his head. "The Octagonal Mysterious Ice Grass and Infernal Delicate Apricot I refined weren't mainly for increasing my strength."
"Their stronger effects are to strengthen the body and Martial Soul."
As he spoke, Han Xing summoned the Sun-Shooting Divine Bow.
The ancient longbow, forged from mysterious ice, gave off terrifying cold.
As Han Xing drew the bowstring, an ice arrow shot out.
The ice arrow struck a cliff face and instantly froze a large area.
"My two Martial Souls have both been strengthened to different degrees."
"The Three-Legged Golden Crow's flames are hotter, and the ice arrows shot from the Sun-Shooting Divine Bow are more powerful."
Han Xing smiled. "I've also gained Ice Immunity and Fire Immunity."
"And that's not all the Immortal Herbs did. My aptitude has improved to some extent, too."
Only then did Radiant Douluo nod in satisfaction.
If all an Immortal Herb could do was raise someone's level by one, it would truly be a huge disappointment.