"So, this is the principle of the Dou Xin?" Qian Jing stared blankly at the wooden sphere in Enlack's hand, nodding gently. "By controlling the sequence already arranged inside, you control the changes outside?"

"Exactly!" Enlack snapped his fingers. The wooden sphere and the wood shavings traced an arc in the air, returning to the floor once more. "To put it simply, the Dou Xin is a control room filled with numbers. When you need a specific number, your Dou Qi transforms into that number." Qian Jing subconsciously nodded repeatedly. No wonder Fen Tu Kuang Ge had been saying that the Dou Xin possessed astonishing power—a warrior without a Dou Xin boat could never defeat a warrior who possessed one.

Initially, when he first heard this, Qian Jing felt there was some logic to it, yet he still thought the power of the Dou Xin was being slightly overstated. At the peak of the Fumo Nine Battles, his Dou Qi could unleash a burst of speed and power; against an opponent from the Fumo One Battle, he wouldn't necessarily stand without any chance of victory.

"Now it seems there truly is no chance of victory at all," Qian Jing managed a bitter laugh, shaking his head repeatedly. "The Dou Xin is just too strong. Provided by the Fengyun Shou Da Zu."

Enlack nodded lightly. "The Dou Xin is indeed very strong, especially this method of instantly shifting techniques—it can beat the fight right out of a person."

Qian Jing laughed self-deprecatingly. There was still so much in the world of Dou Qi that he hadn't considered. He had underestimated the Dou Xin before, perhaps being too arrogant, or simply foolish.

"Of course..." Enlack clapped Qian Jing on the shoulder. "Kid, don't think that arranging the sequence inside the Dou Xin is that easy to install." Qian Jing paused slightly, looking at Enlack, then finally registered the faintly discernible Dou Qi sequence within the Dou Xin, like a candle flame in a gale, ready to be extinguished at any moment. That sequence, no matter how he tried to force it, his Dou Qi would never truly arrange itself that way.

"We call that the Dou Xu," Enlack said, leaning back on his hands braced against the wooden floor, stretching his shoulders. "There are two ways to install the Dou Xu. The first is constant use of techniques in battle..." Qian Jing nodded in agreement. That faint, elusive Dou Xu inside his body had clearly gathered a tiny bit there through the constant use of techniques in West Mountain. He figured the first warrior to discover the Dou Xu must have also discovered it through relentless fighting.

"However, the first method is rather stupid," Enlack shrugged. "The more powerful the technique, the harder it is to install the sequence into the Dou Xin. Just fighting constantly? Your beard might turn white, and you might only then have a chance to install the Podi Zhan truly into your Dou Xin." White beard? Qian Jing sighed. Uncle Enlack was being polite with his words. If he truly did that, it was doubtful he'd manage to install it even by the time he died; the difficulty coefficient for a Saint-level technique was simply too immense.

"Installing several Dou Xu sequences is even harder...," Enlack snapped his fingers again. "There is only one path to take. You must practice it yourself! Place refined Dou Qi into the Dou Xin and practice arranging and combining it. Let it mature and perfect itself completely."

Qian Jing nodded as if he understood, mobilizing the Dou Qi within him toward the Dou Xin. The instant his Dou Qi touched the Dou Xin, his body jolted.

"How..." Qian Jing looked at Enlack in astonishment. His Dou Qi was completely repelled when attempting to enter the core area of the Dou Xin! It felt like asking permission to enter the tables and chairs in his own home, even when he was clearly inside his own house.

In the quiet Enlack Dou Qi Room, Qian Jing wore an expression of stunned disbelief. Enlack beamed, his palms striking the solid wooden floor repeatedly with a thump-thump sound. "Interesting. Blocked by your own Dou Xin? I knew that would happen!" Qian Jing forced an awkward smile at Enlack's gloating face. Did Uncle Enlack have the same experience when he first encountered the Dou Xu? Was that why he was so delighted to see someone make a fool of themselves today?

"There is a technique to drawing in the Dou Qi as well. You can't draw it in like that," Enlack said with a smile, pointing toward Qian Jing's chest. "The core of the Dou Xin isn't entirely sealed; it has countless tiny pores. As long as you transform your Dou Qi into countless fine needles, it will naturally follow the pores inside."

Transform Dou Qi into needles? Qian Jing blinked. Although Dou Techniques also required arranging Dou Qi sequentially, transforming all the Dou Qi into fine needles was no easy feat. Moreover, how large were the pores on the Dou Xin?

Needles? Qian Jing pulled at his lips. If the pores on the Dou Xin were like needles, then a strand of ordinary human hair was a pillar! Getting the Dou Qi into the core of the Dou Xin was going to be difficult.

Control! To create a Dou Xu, an extremely high requirement for control was necessary first. Qian Jing took a deep breath, feeling lucky. For the past two years, whether training with Uncle Sublack, following Oulala, or any master in the Endless World, or even practicing archery in the Zhence Dynasty—all of it demanded control.

Mysterious Potions: even a slight error in the formula could result in explosive death; that was an area where absolutely no mistake could be tolerated. Provided by the Fengyun Shou Da Zu.

Forging was the same; a slight error and the forged item would be ruined. Uncle Black, though taciturn and reluctant to speak, his gaze alone was unbearable.

Speaking of control, Qian Jing felt a surge of confidence. Even a warrior with Elven King blood might not surpass him in terms of precision in control.

Strands of Dou Qi were continually separated and drawn out, then separated again, transforming into filaments a hundred times finer than hair. They were slender yet sufficiently rigid, unable to be blocked by the sturdy, single-layer air film on the pores.

Pop... Pop-pop-pop. The pores at the core of the Dou Xin were pierced one by one. Qian Jing seemed to hear the sound of bubbles bursting as streams of pure Dou Qi rushed into the Dou Xin's locus, starting to rotate according to the Fen Jin Lian Zhan sequence.

After just two rotational cycles, Qian Jing opened his eyes and looked back at Enlack. He watched as that stream of Dou Qi entered—after only two rotations, it was completely gone! It was utterly consumed. There was no discernible increase in the internal sequencing. It was completely depleted.

"Oh, right," Enlack smacked his forehead, his eyes lighting up. "I almost forgot to tell you. Completing the arrangement and installation of a Dou Xu is not easy; it consumes a massive amount of Dou Qi."

"In a way, you are using the Dou Qi you cultivated to 'pay for' the Dou Xu. The more powerful the technique, the more Dou Qi required." Qian Jing supported himself with his hands on his knees and stood up, shaking his head with a bitter smile. He had thought he had practiced incorrectly again, not realizing that the Dou Xu would consume so much Dou Qi. Fortunately, he possessed a Dou Xin, which replenished lost Dou Qi much faster than someone without one. But even so... "It seems I must buy Dou Shi and Dou Jing," Qian Jing sighed, looking up. If he had Dou Shi and Dou Jing, using the harsh natural environment in the Ancient Desolate Sand Sea to cultivate Dou Qi would accelerate his progress, providing more Dou Qi for cultivating the Dou Xu.

"Dou Shi and Dou Jing?" Enlack looked at Qian Jing with a smile. "I happen to know a place with a rather substantial Dou Jing mine."

"A Dou Jing mine?" Qian Jing's eyes immediately lit up, and he looked around at the warriors sitting on both sides. "Do I have to win a fight to be told where it is? Fine! Who am I fighting this time?" A Dou Jing mine! Not a Dou Shi vein! Specifying a Dou Jing mine meant that Dou Jing constituted the major part of that vein! Such a vein, even a small one, if placed in the Zhence Dynasty, would cause the surrounding factions to fight to the death for it.

The few warriors seated on the sides of the dojo flinched back from Qian Jing's intensely combative gaze. They had never seen such a naked stare.

Enlack looked at Qian Jing with surprise. Why did this kid possess such an endless thirst for improvement? Truly an interesting young man.

"The Dou Jing mine doesn't pertain to Dou Techniques, so..." Enlack smiled faintly. "You don't need to challenge anyone in the Enlack Dou Qi Room."

"Is that so?" Qian Jing pushed down his sleeves and looked back at Enlack. "Then, where is the Dou Jing mine?" Enlack's smiling face held a hint of cunning malice. "While you don't need to challenge anyone in my Enlack Dou Qi Room, that doesn't mean I'll tell you for free."

Qian Jing pouted silently, clearly thinking, I knew it wouldn't be this easy to get information! In the Endless World, obtaining any benefit without exerting any effort was almost entirely non-existent!

Learning Mysterious Potions from Oulala required the readiness for sudden death! Learning Inscriptions from the Inscription Master also required the mental preparation to be put into a coffin and return to the embrace of the stars at any moment. Provided by the Fengyun Shou Da Zu.

Even learning basic smithing from Uncle Black required the mindset of accepting death every time he advanced a level or collected ore.

A Dou Jing vein! To obtain it without paying anything? Qian Jing laughed. If Uncle Enlack had said that, he'd have slapped himself twice across the face to see if he was dreaming. Such good fortune existed in the Endless World?

"Actually, this task is quite simple," Enlack said. Qian Jing instinctively shrank his neck. In the Endless World, whenever a teacher adopted a nonchalant, easygoing expression while describing a task as "very simple," that task was almost entirely synonymous with courting death.

Uncle Black’s notebooks on various mechanisms and hidden weapons were scattered across numerous corners of West Mountain, yet he had simply said, "Just go pick them up."

Pick them up? How? Qian Jing managed a bitter smile that touched his lips. Was he supposed to run up to an (Yan Mo - Flame Demon) and smile while saying, "Esteemed Lord Yan Mo, I need to enter your lair to retrieve something that once didn't belong to you?"

Putting aside whether the Yan Mo could even understand him, even if it could, for a high-level magical beast intensely possessive of its lair, the only response would be to immediately spew a gout of flame and incinerate the intruder.