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

Chapter 50 Choice: Burning Heaven and Boiling Sea Palm!

Inside the library, the scene suddenly changed.

Lu Yu's vision suddenly opened up, and a magnificent circular hall came into view. On the surrounding walls, more than a dozen energy shields flickered like breathing, illuminating the entire space as bright as day.

Suddenly, a dense whistling sound arose from all directions. Countless colorful energy orbs shot in like meteors, weaving and weaving through the hall, creating a series of whooshing sounds.

These orbs of light come in various shapes, some like swimming dragons, others like starlight, and each one emits a unique energy fluctuation.

Lu Yu's gaze sharpened, and his right hand shot out with lightning speed, precisely grasping a pale red aura. The light dissipated, revealing a crystal-clear, fiery red gemstone in his palm.

Inside the crystal, a gilded liquid flowed slowly, shimmering with an eerie luster as if it were alive.

"This is... the Earth Core Fire Essence?"

A hint of surprise flashed in Lu Yu's eyes. This item was condensed from the essence of the earth's core magma, which was highly beneficial to fire-attribute cultivators. What surprised him even more was that this piece of earth core fire marrow actually resonated subtly with his earth core flame.

"It seems they were attracted here by the terrestrial flare..."

A look of joy flashed in Lu Yu's eyes. Such a gain so soon after entering the library was indeed beyond his expectations.

This piece of Earth Core Fire Marrow is of superior quality. If it can be absorbed by Earth Core Flame, even if it cannot promote the evolution of the strange fire, it will definitely greatly enhance its power.

"But let's take a look at the other treasures first."

Now that I've advanced to the Dou Ling level, the Xuan-rank Dou Techniques I used to practice are gradually becoming outdated. It's time to find higher-level Di-rank Dou Techniques.

"Ideally, I could find a low-rank palm technique. With my previous experience practicing the Guardian Palm, I could learn it much faster..."

With that thought in mind, he temporarily put down the Fire Marrow and looked around.

The crowd transformed into streaks of light, darting and weaving through the spacious room, vying to catch the orbs of light shooting out from the energy shield.

"Heavenly Fei Fruit!"

A man in a blue robe suddenly exclaimed in surprise, holding a medicinal herb that was as green as jade, with a jade-like fruit at its top.

It is the Heavenly Jade Fruit. Simply consuming it directly can increase a person's Dou Qi strength by about one star. If it is used to refine pills, once the pills are successfully made, they will definitely be a kind of pill that can directly increase the strength of a Dou Wang powerhouse.

Without hesitation, the man swallowed the medicinal herb whole, while the man and woman accompanying him watched Lu Yu and Little Fairy Doctor warily.

Lu Yu shook his head and chuckled, then turned to look at Little Fairy Doctor. He saw her chasing after a purple ball of light the size of a human head, her movements swift, yet she could not reach it.

"I come!"

Lu Yu's purple cloud wings suddenly unfurled, transforming into a streak of crimson light as he gave chase. However, the instant his fingers touched the ball of light, a powerful repulsive force erupted, forcefully repelling him. The purple ball of light seized the opportunity to break free and re-enter an energy shield.

"interesting……"

Lu Yu landed beside Little Fairy Doctor and asked with a smile, "You really want that?"

Little Fairy Doctor nodded and said, "I vaguely saw that it was a body-rolling fighting technique, which suits me just right."

"Then let me do it!"

A glint flashed in Lu Yu's eyes, and he pointed his fingers like a sword, unleashing a streak of blue and red fire that shot straight at the purple energy shield!
boom!
The energy shield shattered, and countless purple light spots scattered like stars. A scroll, as pure as purple jade, slowly emerged, its surface shrouded in fine lightning patterns, radiating a heart-palpitating energy fluctuation.

Lu Yu loosely clenched his fist, and a gentle suction force drew the scroll towards him. The moment the scroll touched his hand, he clearly felt a tingling electric current spreading along his arm.

Looking down, one could see five ancient and elegant characters, “Purple Thunder Jade Illusion Body,” written in a flowing, flamboyant style, leaping out at the scroll. Each character seemed to be formed from lightning, with tiny electric snakes faintly visible moving within them.

"It's actually a low-level Earth-rank movement technique, and a rare one at that, with lightning attributes..."

A hint of surprise flashed in Lu Yu's eyes. You see, lightning attribute is known for its speed, and when combined with such a high-level movement technique, it's like adding wings to a tiger.

Without hesitation, he handed the scroll to the purple-clad girl beside him: "This scroll of fighting techniques is perfect for you." A gentle smile appeared in Little Fairy Doctor's eyes, and with a light lift of her hand, the purple scroll disappeared into her storage ring. She turned to look at Lu Yu and asked softly, "And you? Have you found your desired treasure?"

Lu Yu shook his head and said, "Not yet. I originally planned to choose a fire-attribute palm technique of the Earth Rank, but I haven't found one yet..."

He secretly pondered: among the Earth-rank attack techniques he currently possessed, the Heavenly Dragon Flame Finger was quite powerful, but it was ultimately only a low-level Earth-rank technique; while the Emperor Seal Technique, although a high-level Earth-rank technique, was too taxing for him to use as a regular method.

"It would be best to find a mid-level Earth-rank combat skill..."

Lu Yu glanced at the swirling orbs of light around him and thought to himself, "It can make up for the lack of attack methods without consuming too much battle qi."

Just then, he suddenly felt something and looked up into the depths of the library.

A streak of crimson-gold light streaked across the sky, distorting space and sending waves of heat through it.

"What amazing fire-attribute energy!"

Lu Yu's eyes flashed with a sharp light, and his figure suddenly transformed into a crimson afterimage as he gave chase. The crimson-gold light seemed to possess sentience, its speed increasing dramatically in an instant, drawing a dazzling streak of fire in the air.

"Want to escape?"

Lu Yu snorted coldly and flicked his fingers in quick succession. Dozens of cyan and crimson fire lines shot out from the air, weaving together into an impenetrable net of fire that completely surrounded the crimson-gold light.

Chi Chi!

The moment the fire net made contact with the ball of light, a blinding burst of light erupted. Lu Yu seized the opportunity, his right palm suddenly shooting out, and the Earth Core Flame erupted, transforming into a giant fiery hand over ten feet in size, fiercely grabbing at the ball of light.

"Crack!"

With a crisp cracking sound, the energy barrier on the surface of the crimson-gold orb finally shattered.

A scroll, its entire body as if cast in pure gold, slowly emerged, its surface pulsating with fiery runes, and the five ancient characters "Burning Heaven and Boiling Sea Palm" could be faintly seen shining brightly.

Lu Yu held the scroll in his hand, swept it with his soul power, and a look of surprise immediately appeared on his face.

Burning Heaven and Boiling Sea Palm, also known as Crimson Gold Nine Revolutions Burning Heaven Palm, is a mid-level Earth-rank fire-attribute combat skill.

The palm strike is divided into nine rotations, each rotation adding a layer of "Crimson Gold Flame Force". When the nine rotations are complete, the palm force is like nine great suns stacked on top of each other, capable of burning mountains and boiling seas, destroying cities and splitting the earth.

It is said to be the supreme martial art of the Crimson Gold Sect in ancient times. This palm technique is extremely powerful and unparalleled. When mastered, it is comparable to a high-level Earth-rank combat skill!

"it is good!"

Lu Yu was overjoyed. This palm technique was just right for him. If it were an ordinary low-level Earth-rank combat skill, he might have chosen Earth Core Fire Marrow.

However, this palm technique is clearly more valuable. It not only suits his current needs, but it will also be suitable even when he becomes a Dou Zun in the future.

Just as Lu Yu was immersed in the joy of his harvest, an old voice suddenly rang out in the library.

"The time has come!"

The voices of the two elders echoed in the space.

"All students, leave the library immediately!"

Lu Yu quickly put the scroll into his storage ring and turned to look at Little Fairy Doctor. The two nodded, and then, together with the other three students, headed towards the exit passage.

When they passed through the spatial portal back into the valley, Vice Dean Hu Qian had been waiting for them for quite some time. Seeing the undisguised joy on the five faces, the white-haired old man stroked his beard and smiled:
"It seems you've all had a good time."

……

(End of this chapter)