Not far from Lin Chen at the bottom of the lake, ripples began to arise, and at the vortex's center, a golden heart was pulsating slowly with the sound of thunder.

"The Thunderous Heart!"

Lin Chen, seeing the pulsating heart, showed a face filled with ecstatic joy.

Last time, having obtained the Flame Heart, Lin Chen's control over fire Spiritual Power had undergone an earth-shattering improvement. If he were to acquire the Thunderous Heart, his thunder attribute attacks would certainly be taken to the next level.

One must know that the Thunderous Heart, after all, was forged through the tempering of thunder forces over ten thousand years, containing energy and thunder power that were incredibly pure. If he absorbed the Thunderous Heart, Lin Chen's body and strength would undergo revolutionary changes in an extremely short amount of time, even possibly allowing him to directly assault the Tianyan Realm.

Lin Chen couldn't help but laugh at his own fortune internally; it seems he had those pursuing Martial Artists to thank for this windfall!

With his eyes blazing, Lin Chen could no longer hold back. His body flashed and appeared in front of the Thunderous Heart, reaching out toward it.

"Boom!"

Just then, a rapid current surged through, and a golden electric eel burst towards Lin Chen.

The sudden turn of events made Lin Chen frown; his body flashed, evading the eel's ambush.

The electric eel's speed in the water was incredibly fast, like a bolt of lightning, continuously darting about. If hit by the eel, one would undoubtedly be left with a bloody hole.

Determining the electric eel's trajectory, a slight smile appeared on Lin Chen's lips as flame surged in his hand, instantly forming into a fiery net.

When the electric eel charged at Lin Chen again, he lifted his arm, and the golden net burst forth, tightly wrapping around the eel.

The eel struggled, but the interwoven net of fire and electricity tightened even more.

Finally, after ten minutes, the electric eel stopped thrashing, and its body miraculously transformed into a shimmery golden sword.

This is!

Feeling elated, Lin Chen exerted a suction from his palm, and the sword that the electric eel had turned into was pulled into his grasp.

With the sword in hand, Lin Chen felt a thick thunder power coursing through his palm.

Three big characters shone upon the sword's body: "Thunder Sword!"

Lin Chen had never expected to reap so many rewards from entering Thunder Lake.

After storing the Thunder Sword into the Tianyan space, Lin Chen returned to stand before the Thunderous Heart and stretched out his hand to grasp it.

Take!

Following Lin Chen's roar, the gleaming Thunderous Heart transformed into a puddle of golden liquid, flowing continuously into Lin Chen's body.

Lin Chen felt a tingling sensation throughout his body as the power of the Thunderous Heart coursed through him, his skin, bones, and even every single cell greedily absorbing the force of the thunder.

"Boom!" Accompanying the influx of thunder power into his Qi Sea, the Taiji within the Qi Sea began to rotate violently, and a golden glow lit up on the slot above.

Lin Chen had once noticed that the fire attribute slot was lit up, while the metal attribute was dim, but now both slots were shining brightly at once.

It was almost certain that if the other three slots were also illuminated, this Taiji Qi Sea would surely unleash even greater functions.

Lin Chen sat at the bottom of the lake, closed his eyes slightly, and quickly entered a state of cultivation. His Taiji Qi Sea was still rotating nonstop, a fierce suction force continuously drawing the thick energy of thunder and fire into the spinning Qi Sea.

At this moment, Lin Chen's entire body was enveloped by the power of thunder, as thick energy ceaselessly burrowed into his body, nourishing his muscles and bones before finally entering his Qi Sea.

Feeling the changes in his body, Lin Chen was wildly ecstatic. He could even sense his cultivation rapidly ascending. In less than half a day, he had already reached the mid-stage of the Innate Realm.

Within Thunder Lake, Lin Chen's Taiji Qi Sea continuously absorbed the energy from the bottom of the lake. For a whole day and night, he sat at the bottom of the lake in meditation, immovable as an old monk.

And with the energy being inhaled, his cultivation climbed slowly. This pace seemed slow, but before one realized, Lin Chen's aura had reached a terrifying level, even touching upon the bottleneck of the Tianyan Realm. Perhaps just a moment more, and that chasm would be breached successfully, propelling him from the Innate Realm to the Tianyan Realm.

During that day, streams of thunderous energy constantly refined Lin Chen's limbs and every cell in his body. His body was continuously wrapped in golden thunder.

Another half day passed, and Lin Chen's body was completely enveloped in a layer of gold, like a golden armored bronze statue, exuding a trace of eeriness.

Now, Lin Chen could feel that his aura had reached the pinnacle of the Innate Realm, and it could be said that the Tianyan Realm was like a sheet of paper, ready to be broken through at any moment.

By now, on the riverbank, Xu Rong and the others were becoming somewhat impatient.

"This guy's been in there for almost two days, how come there's still no reaction? Could he have died inside?"

"Yeah, let's just go. No point wasting our time here."

"With all this effort, we'd be better off looking for some genius treasures!"

Many martial artists voiced their impatience.

"Shut up!" Xu Rong roared furiously, his gaze heavy as he watched the surface of the lake.

He could feel strong energy fluctuations at the bottom of the lake. Lin Chen certainly hadn't died. What on earth was this guy doing at the bottom of the lake!

Lin Chen had long been listed as a must-kill target by the Xu family, so Xu Rong's mission this time had two objectives: one was to enter the Prophecy Tower, the other was to kill Lin Chen and obtain the Tianyan inheritance.

He had already seen Lin Chen's terrifying strength. If he wasn't slain, he would definitely become a dire threat to the Xu family in the future.

Just then, suddenly, the bottom of the lake emitted rumbling noises, and an enormous vortex formed at the center of the lake.

Damn it, why is this happening!

Xu Rong felt something at the bottom of the lake crazily absorbing energy. Could it be that Lin Chen was causing this commotion?

As he watched the changes at the bottom of the lake, Xu Rong's face grew uglier and uglier.

At that moment, the entire lakebed shook violently as if an earthquake was happening. The vortex on the surface grew larger and larger, as streams of dense energy were continually sucked into it. The immense power frightened all martial artists on the bank to a pale complexion.

"Bang!" With a crisp sound, a figure burst out from the bottom of the lake and slowly landed on the surface of the lake.

The originally turbulent lake surface calmed down immediately after Lin Chen's landing.

Tap tap tap!

Stepping on the ripples of the lake surface, Lin Chen walked step by step toward the shore, the golden energy around his body slowly falling off.

Watching Lin Chen approach the bank, Xu Rong turned ghostly pale, and the martial artists behind him even trembled.

"Damn it, why can't I feel his aura?" Xu Rong fixed his gaze tightly on Lin Chen, his eyes revealing a trace of astonishment.

"Aren't you guys trying to kill me? Here I am!" Lin Chen said with a faint smile curving his lips.