Martial Soul Upgrade! Heaven Lightning!

"Six years!"

"Deal!"

Dugu Bo frowned and pondered for a moment before agreeing.

On the Douluo Continent, the master-disciple relationship was extremely solid, second only to the bond between father and son; they shared in each other's glory and suffered in each other's losses.

If Zhou Tong grew up in the future, even if his martial soul countered the Dugu Family, he would not become their enemy.

Therefore, taking him as a disciple could bind Zhou Tong and Dugu Bo together, benefiting everyone.

As for providing Zhou Tong with a few years of protection, since he was already his disciple, what did that matter?

"Disciple Zhou Tong, pays respects to Teacher!"

Seeing this, Zhou Tong took a deep breath and performed a solemn apprenticeship ceremony before Dugu Bo.

For Zhou Tong, the master-disciple relationship was also a massive benefit.

Gaining a Title Douluo as a backer meant he could secure a stable environment for his growth...

"Rise."

Dugu Bo gently lifted Zhou Tong up, acknowledging him as his disciple.

"Kid, can you tell me the method to detoxify now?"

Hearing this, Zhou Tong smiled and said with a serious expression, "All poisonous soul beasts are not killed by their own toxins because they have venom sacs to store them."

"Your Dugu Family's Jade Phosphor Snake, however, has lost its venom sac; this is caused by a mutation."

"Venom sac?"

Dugu Bo muttered these words, his gaze gradually growing heavy as he spoke, "So that's it, so that's it."

"The Dugu Family was almost completely buried by the lack of a venom sac!"

"I lost my parents in my youth, my wife in my middle age, and my son in my later years; the entire family has been ruined. It hurts so much."

Tears streaked down Dugu Bo's face, making him appear somewhat frantic.

"The Dugu Family is finally saved!"

Seeing this, Zhou Tong stood quietly in place, allowing Dugu Bo to vent the complex emotions in his heart.

After a long while, Dugu Bo finally calmed down.

"Teacher, the way to solve the venom sac issue is to find a substitute; a soul bone is one such substitute, used to temporarily store the toxins."

Hearing this, Dugu Bo's expression changed, "Can't my Medusa Skull Bone be used for storage?"

"It certainly can, but you should still be cautious, Senior."

"Because soul bone storage also has a limit; it can only serve as a temporary substitute."

"The excess toxins will eventually erode your body sooner or later."

Zhou Tong added.

Hearing this, Dugu Bo's face changed instantly, "Then is there no permanent solution?"

"Naturally, there is: martial soul evolution!"

"Martial soul evolution?"

"Exactly!"

Zhou Tong nodded slightly and said earnestly, "If the Jade Phosphor Snake martial soul evolves, it will become more powerful and more complete."

"The venom sac will naturally return."

"Of course, to control the direction of the evolution, you can perform some operations, Senior."

"What kind of operations?"

"For example, using certain immortal herbs to stimulate the true dragon bloodline within your martial soul, thereby making it stronger."

As soon as these words were spoken, Dugu Bo was shocked, "What? There is such a good thing?"

Dugu Bo's breathing became rapid, "Where are these immortal herbs?"

"What I know of is a treasure land where water and fire intertwine, known as the Ice and Fire Yin Yang Well. Countless rare immortal herbs grow there, among which are the things that can save your life, Senior."

Upon hearing this, Dugu Bo's eyes lit up.

"Ice and Fire Yin Yang Well?"

"I have never heard of this place."

"But my herb garden is quite similar to what you described."

"Then take me there."

Hearing Zhou Tong's words, Dugu Bo immediately thought of a treasure land in the Sunset Forest.

Following that, he took Dugu Yan and Zhou Tong with him to the Sunset Forest.

Upon arriving at the herb garden, Zhou Tong's eyes lit up; it was a world where ice and fire intertwined, filled with spectacular, rare flowers and exotic herbs.

In the center of the valley, the area was divided into two distinct halves; within the oval-shaped pool, the hot spring water was separated into milky white and vermilion red.

Although they shared the same pool, they remained clearly demarcated, never encroaching upon one another and always maintaining their own sides.

Steam rose continuously, drifting upward until it reached the mountain pass, where it slowly dissipated.

Surrounding the pool, all manner of lush, vibrant plants grew in abundance.

"Kid, is this the Ice and Fire Yin Yang Well you spoke of, this herb garden of mine?" Dugu Bo asked.

"Senior, it is indeed this place."

"I never expected you to have found such a treasure trove, Senior." Zhou Tong replied, not forgetting to play his part to the fullest.

"So that's how it is. No wonder this place is capable of suppressing the poison of my Jade Phosphor Snake."

"Since that is the case, help yourself. As long as you cure my granddaughter and me, I would even give you this herb garden." Dugu Bo's eyes revealed a touch of magnanimity.

"Which immortal herb can neutralize my poison?" Dugu Bo asked, his eyes gleaming with eager anticipation.

"Senior Dugu, I know you are anxious."

"But don't be in such a rush."

Watching Dugu Bo's old face shift through various expressions, Zhou Tong couldn't help but find it amusing.

"Little Tong, speak quickly."

Dugu Bo was getting annoyed by Zhou Tong's stalling, his face darkening; he felt this little brat was taking revenge on him.

He suppressed his displeasure, wanting to see what Zhou Tong had to say.

"Speak!"

"I am impatient to change my fate."

Dugu Bo's breathing grew ragged, his eyes filled with longing.

The temptation of evolving his martial soul was too great; even for a Titled Douluo, it was difficult to maintain his composure.

Seeing Dugu Bo so restless, Zhou Ting shrugged and walked over to an immortal herb that looked like an eight-clawed snake.

"Although your Jade Phosphor Snake is a snake-type soul beast, it possesses a trace of dragon bloodline. This Earth Dragon Immortal Herb can help stimulate your bloodline and evolve it toward a true dragon."

This particular immortal herb was the most suitable for Dugu Bo.

"How do I use it?" Dugu Bo asked.

"Just eat the leaves directly."

"You can keep the roots, and it will grow back, allowing for sustainable harvesting."

Zhou Tong did not intend to consume the immortal herb all at once, choosing instead to harvest it sustainably.

Besides, there were several of these herbs here, enough to last a long time.

"Good disciple, I shall test the effects of the Earth Dragon Immortal Herb right now." Dugu Bo pulled Dugu Yan along, plucked the leaves of the Earth Dragon Immortal Herb, and headed into a cave to cultivate.

Seeing this, a look of disdain appeared on Zhou Tong's face as he muttered to himself, "When there's nothing wrong, I'm a brat; when there's a problem, I'm a good disciple. What a fickle man!"

After the two left, Zhou Tong's gaze fell upon another immortal herb.

It was a purple-red flower, only the size of a palm, covered in dense, crackling lightning.

The Thunderous Hell Flower.

This was the most suitable immortal herb for the Thunderous Hell Vine, as it also contained a trace of the Thunder God's bloodline.

Looking at the flower before him, Zhou Tong did not hesitate and reached out to pluck it.

This immortal herb was the key to his evolution.

Once consumed, his martial soul's lightning attribute would evolve into Heaven-grade lightning.

The moment his palm touched the Thunderous Hell Flower, a powerful surge of electricity traveled into his hand.

Feeling a slight stinging sensation, Zhou Tong was not alarmed but delighted.

Golden-purple electricity flickered across his palm, but it could not stop him.