While the player is in Battle Through the Heavens, the system is in The Great Ruler.

Chapter 20 Studying the Serpent's Sealing Spell

"This harvest is truly substantial; I need to organize it properly. Just being a disciple of the Endless Fire Domain for a day has yielded rewards equivalent to my simulated income over the past six months."

Lu Yu's soul power swept over the various cultivation techniques and spiritual manuals recorded in the inheritance jade slip, and a satisfied smile involuntarily appeared on the corner of his mouth.

"The Serpent Sealing Spell can temporarily seal an opponent's cultivation. Although the Heavenly Fire Dragon Step is a low-level Earth-rank movement technique, I can handle it with my current strength. In addition, there's the method of shaping the strange fire spiritual vein..."

His eyes gleamed. "If I can master all of these, my strength will definitely reach a new level."

"However, what's most precious to me is this fifth-level alchemist inheritance..."

His fingertips gently caressed the jade slip, and he said thoughtfully, "An eighth-grade alchemist's inheritance is quite valuable even in the Dou Qi Continent. Moreover, the alchemy techniques in the Great Thousand World are slightly different from those in the Dou Qi Continent. Comparing it with the seventh-grade alchemist's inheritance that Elder Yao gave me will greatly benefit my study of alchemy."

With this in mind, he composed himself and began to carefully examine the contents of the jade slip, preparing to formulate his next cultivation plan.

"The most urgent task is to master the Serpent Sealing Spell to break the seal on Hai Bodong and obtain the fragment of the Pure Lotus Demon Flame Diagram. After that, we should focus on improving our movement techniques by mastering the Heavenly Fire Dragon Step. As for the method of shaping the Strange Fire Spirit Vein..."

"This will come later. When the Great Floating Pagoda Technique is cultivated to the Tower Transformation Realm, not only can a Floating Pagoda be condensed, but an extremely powerful flame will also be born within the Floating Pagoda, called the Floating Pagoda Flame."

“Using the Floating Pagoda Fire to create a different kind of fire vein is obviously more suitable than the Earth Core Flame, and it also naturally fits the Great Floating Pagoda Technique. Even if I don’t have the bloodline of the Floating Pagoda Ancient Clan in the future, my cultivation speed will definitely not be bad.”

"Perhaps, this can even be used to improve the quality of the Pagoda..."

Thinking of this, Lu Yu couldn't help but smile. He had previously worried that the quality of the Floating Pagoda he had condensed was insufficient, but now it seemed that his worries were unfounded.

"However, even the Floating Fire Spirit Vein would probably be unable to elevate the Floating Pagoda to the level of the Holy Floating Pagoda. Mu Chen, on the other hand, possesses nine divine veins, which is why he was able to condense the Holy Floating Pagoda."

"In that case, why don't I create a secret technique to improve the quality of the pagoda?"

As Lu Yu thought of this, a glint of light flashed in his eyes. With the existence of the simulator, he could use one month's worth of time as others could use ten years' worth of time. He might be able to create such a secret technique.

"But that's all for later. Let's first study the Snake Sealing Spell."

He shook his head, then immediately sat cross-legged, ready to begin his comprehension. In this world where the strong are respected, the sooner one improves their strength, the better they are at protecting themselves.

……

The next morning.

In the backyard of the Desert Iron Mercenary Group.

Lu Yu was sitting at the stone table, leisurely sipping his tea. Little Fairy Doctor sat quietly beside him, while Qing Lin stood obediently to the side. Xiao Ding raised an eyebrow with slight curiosity after hearing Lu Yu's request.

"Take Qinglin as a maid?" Xiao Ding stroked his chin, his gaze lingering on Qinglin for a moment before he laughed heartily, "It's a blessing for this girl to be able to follow Brother Lu. I naturally have no objection."

Upon hearing this, Qinglin's emerald eyes lit up immediately, and her little hands unconsciously clenched the hem of her clothes.

"Then it's settled."

Lu Yu nodded slightly, and the two chatted for a while longer before Xiao Ding took his leave.

He took out a jade slip containing a cultivation technique and handed it to Little Fairy Doctor, saying, "During this time, you should first teach Qinglin the 'Mysterious Yellow Breathing Technique.' Although this low-level earth-rank technique is a non-attribute technique, it is superior in that it is balanced and peaceful, making it most suitable for building a foundation."

"Finding the strange fire isn't urgent for now. I still have some things to take care of. Let's wait a while before setting off."

Little Fairy Doctor nodded slightly and beckoned to Qinglin: "Come, let me teach you about meridians and acupoints first."

After the two had gone some distance, Lu Yu took out a jade slip that was entirely green from his storage ring. Inside was a record of the inheritance of the Serpent Sealing Spell.

Because he frequently acquired various cultivation techniques through simulations, he prepared many jade slips containing these techniques, just in case.

He had only glanced at this secret technique last night. It was a low-level Earth Rank sealing technique, but its sophistication far surpassed that of ordinary techniques. It could be continuously strengthened as the user's cultivation level increased, making it usable up to the Dou Zun stage.

Even when facing high-level opponents, as long as the quality of the battle qi is pure enough, it can still exert a considerable suppressive effect.

The only drawback is that casting this technique consumes a significant amount of the caster's battle qi, far exceeding that of ordinary Earth-rank battle techniques. If sealed at a higher rank, the consumption is even more staggering. ...

Half a month later, in a quiet room.

Lu Yu's eyes were slightly closed, and his battle aura surged like the tide. The emerald jade slip floating in front of him emitted a faint light, and countless ancient runes flowed in the void, outlining a lifelike phantom of a spirit snake.

"Congeal!"

With a soft shout, he formed a profound hand seal. Crimson battle qi surged along specific meridians, gradually condensing into a snake-shaped mark in his palms. The mark was only three inches long when it was first formed, yet it emitted a chilling aura.

"Indeed mysterious..."

As Lu Yu sensed the sealing power contained within the mark, a thought suddenly struck him. The nascent phantom of the Floating Pagoda within his body trembled slightly, and a wisp of jet-black light flowed out along his meridians.

"Om-"

The crimson serpent mark was suddenly stained with a deep black, and fine tower-shaped patterns appeared on its surface. The already powerful sealing force surged by more than 30%, even causing the surrounding space to subtly distort.

"It really works!"

Lu Yu's eyes gleamed brightly. Although the Floating Pagoda had not yet materialized and could not be separated from his body to fight, its power could be used to enhance the Serpent Sealing Spell, making the spell even more powerful.

He carefully comprehended the profound mysteries of the new mark. The Great Floating Pagoda Technique was already a top-tier sealing technique in the Great Thousand Worlds. Now, with the two combined, this improved version of the Serpent Sealing Spell was probably comparable to a high-level Earth-rank secret technique.

……

After a while,

"It's time to go."

Lu Yu put away the jade slip, stood up, dusted off non-existent dust, and with a flick of his sleeve, the wooden door of the meditation room opened silently. He then strode out of the meditation room.

In the courtyard, Little Fairy Doctor was instructing Qinglin in her cultivation. Upon seeing Lu Yu emerge from seclusion, the two stopped simultaneously. Fine beads of sweat still clung to Qinglin's small face, but her emerald eyes sparkled brightly.

"I need to go out for a while." Lu Yu walked up to the two of them, took out several bottles of pills and placed them on the stone table. "Take these pills to aid cultivation as I told you before."

Little Fairy Doctor nodded slightly, her gaze lingering on him for a moment: "Do you need me to come along?"

Lu Yu shook his head and said, "It's nothing. I'll be back soon. You don't need to go. Stay and take care of Qing Lin."

He then turned to the uneasy Qinglin: "How is your cultivation progress?"

“Replying to Young Master,” Qinglin nervously twisted the hem of his clothes, “I have memorized the breathing technique that Sister Little Fairy Doctor taught me, and I have been using the Foundation Establishment Elixir you gave me. I will soon be able to break through to the Dou Zhe level.”

"good."

A hint of approval flashed in Lu Yu's eyes as he gently stroked Qing Lin's hair. The girl's hair was soft and smooth, carrying a faint scent of herbs and trees.

"When I return, I hope to see you break through to the Dou Zhe level." His tone was gentle, filled with unspoken expectation. "Remember, never be too hasty. In the path of cultivation, the foundation is the most important."

"Even if you don't break through, it doesn't matter, Young Master won't blame you."

As soon as she finished speaking, Qinglin's face flushed red, and her emerald green snake eyes shone with a determined light: "Qinglin will definitely not let Young Master down!"

Lu Yu smiled and nodded, then turned and gave Little Fairy Doctor a slight nod. The two exchanged a knowing glance, understanding each other without needing to say a word.

"gone."

"Take care of yourself."

After a brief farewell, his figure gradually disappeared outside the courtyard.

(End of this chapter)