Consuming 100,000 experience points, upgrade the Novice level of Heaven's Edge Ruler Step to Slightly Accomplished.

[Skill Upgrade! Heaven's Edge Ruler Step (Novice) → Heaven's Edge Ruler Step (Slightly Accomplished)]

Continue to consume 200,000 experience points, upgrade Heaven's Edge Ruler Step.

[Skill Upgrade! Heaven's Edge Ruler Step (Slightly Accomplished) → Heaven's Edge Ruler Step (Room Entering)]

Lu Yu felt he could continue to upgrade, so he consumed 400,000 experience points and upgraded Heaven's Edge Ruler Step.

[Skill Upgrade! Heaven's Edge Ruler Step (Room Entering) → Heaven's Edge Ruler Step (Mastery)]

With Heaven's Edge Ruler Step upgraded to Mastery level, Lu Yu comprehended the second form of Heaven's Edge Ruler Step — Heaven's Edge Ruler.

With one step, the spiritual power within him poured out, and Lu Yu's figure transformed into a rainbow light, flying towards the bamboo hut.

Heaven's Edge Ruler Step is divided into two forms: the Ruler Step for close combat and Heaven's Edge Ruler for long-distance travel.

When Heaven's Edge Ruler Step reaches Mastery level, Lu Yu truly masters this sixth-tier body technique martial art, able to perform Heaven's Edge Ruler, transforming into rainbow light, and flying at high speed.

Lu Yu's rainbow flight speed can't compare to Li Qiuyang and Quidefa, but compared to pure spiritual power flight at Qi Sea realm, the speed is astonishing.

The distance from the Tongtian Tower to the bamboo hut is about 300 to 400 miles, and Lu Yu took less than 5 minutes; the rainbow flight speed is roughly 2 Mach.

Much faster than simply running with his feet.

If it's a short burst speed, muscle power explosion is faster, but it can't last.

Though Heaven's Edge Ruler Step provides fast rainbow flight, the consumption is also extremely high, with 600 points of spiritual power consumed per second, and even more if speed increases.

Lu Yu's own spiritual power can only sustain rainbow flight for 2 minutes.

No wonder martial cultivators at Ethereal Qi realm generally don't fly and fight in the air; the spiritual power consumption for flight is too high.

Pure spiritual power recoil flight consumes less than rainbow flight, yet Ethereal Qi realm martial cultivators still expend hundreds of points of spiritual power per second, and combined with the consumption for martial techniques, aerial combat lasts only a few minutes before spiritual power runs out and they crash down.

Only Qi Sea realm experts, capable of recovering hundreds of points of spiritual power per second, can sustain long-duration airborne flight.

The rainbow light landed in front of Lu Yu's wooden hut. He glanced at the experience points needed for Heaven's Edge Ruler Step's next level and cast aside the thoughts swirling in his mind, focusing on Asura Slash and Infinite Fist.

To elevate Heaven's Edge Ruler Step to Pinnacle level requires 1,000,000 experience points. He now has 1,500,000 experience points left; upgrading Heaven's Edge Ruler Step means he can't upgrade Asura Slash and Infinite Fist.

Moreover, the Blood Burning Secret Technique also needs an upgrade. Lu Yu's physique is now enhanced, capable of handling a higher-level Blood Burning Secret Technique, which can effectively boost his combat prowess.

The Blood Burning Secret Technique at Room Entering level, once performed, doubles Lu Yu's combat strength, and upgrading it will certainly make the effects even stronger.

Consuming 200,000 experience points, upgrade Blood Burning Secret Technique.

[Skill Upgrade! Blood Burning Secret Technique (Room Entering) → Blood Burning Secret Technique (Mastery)]

The Blood Burning Secret Technique consumes 50% of maximum Qi Blood, boosting combat strength twofold.

The next upgrade requires 1,000,000 experience points.

Lu Yu activated the Blood Burning Secret Technique, reversing 50% of his Qi Blood, his body momentarily expanded by the erupting Qi Blood, revealing its true form.

The three-meter-tall Lu Yu stood on open ground, red Qi Blood continuously exuding from his body, his muscles exaggeratedly enlarged by the reversed Qi Blood, feeling like he could shatter the earth with a single punch.

Lu Yu's eyes were clear, not losing his sanity or becoming a mindless, raging beast despite activating the Blood Burning Secret Technique.

Sensing the raging power surging within him, Lu Yu clenched his fist, the air burst apart with a loud noise, leaves on the ground being lifted by the air currents.

With a strong step on the ground, skillfully dispersing the force evenly around, the ground within three meters of Lu Yu sunk by twenty centimeters.

"This powerful feeling is wonderful!"

Lu Yu felt he could completely withstand the current level of Blood Burning Secret Technique's side effects.

The enhancement of his own strength from the Blood Burning Secret Technique is so direct and potent.

He couldn't resist using 1,000,000 experience points to further upgrade the Blood Burning Secret Technique.

[Skill Upgrade! Blood Burning Secret Technique (Mastery) → Blood Burning Secret Technique (Pinnacle)]

Boom! The ground beneath Lu Yu shattered, and his consciousness was instantly engulfed by the reversed Qi Blood, an outburst of unrestrainable rage exploded from his chest, the chaotic Qi Blood swirling around him smashed all the surrounding soil, green bamboo, and rocks.

Feeling the raging aura emitted by Lu Yu, Li Qiuyang suddenly opened his eyes, and his figure disappeared from the cave residence, appearing beside Lu Yu.

One hand placed on Lu Yu's head, suppressing the chaotic Qi Blood swirling around him, straightening the reversed Qi Blood within him.

The raging aura on Lu Yu was subdued by Li Qiuyang, as the reversed Qi Blood was straightened by Li Qiuyang, Lu Yu's rationality regained control.

In that instant when Qi Blood rushed to his head, Lu Yu understood that he had overestimated himself.

1,000,000 experience points were needed to upgrade the Blood Burning Secret Technique from Mastery to Pinnacle, indicating how powerful the Pinnacle level Blood Burning Secret Technique truly is.

[Blood Burning Secret Technique (Pinnacle), consumes 70% of maximum Qi Blood, enhances combat strength fivefold]

After the Blood Burning Secret Technique ended, Lu Yu's physical size shrank to 1.8 meters, his entire body covered in blood, his limbs aching and feeble, not a single part was intact.

"Thank you, Master," Lu Yu said with difficulty, feeling exhausted even just speaking.

Li Qiuyang withdrew his hand, supporting the almost collapsing Lu Yu with spiritual power, saying: "Cultivating secret techniques should progress step by step, avoid forcibly training, take this pill and go rest."

A fifth-tier Life Bone Transformation Pill appeared in his hand, an excellent Spirit Pill for healing bodily wounds.

The pill floated up, landing in Lu Yu's mouth, and he exerted effort swallowing to ingest the Life Bone Transformation Pill.

The pill was digested in the stomach, its effects manifest, gradually healing the internal injuries caused by the reversing Qi Blood, though full recovery would take substantial time.

Once Lu Yu was placed in his room, Li Qiuyang left.

Lying on the bed, Lu Yu smiled wryly, never imagining that the Blood Burning Secret Technique was so dangerous. He thought he had a gaming system, just needed to deactivate it before it went berserk, but had no chance to shut it down actively.

"Only 300,000 experience points left." Lu Yu hesitated briefly before choosing to upgrade Asura Slash.

The Infinite Fist, frankly speaking, he seldom used.

Currently, whether the foes are so strong that he needs fully charged strength to slay them or they're too weak, unable to withstand even a basic attack, Infinite Fist is practically unnecessary.

Upgrading Asura Slash doesn't affect his body, allowing Lu Yu to enhance it while lying in bed.

He bought Thunder Blade Technique from the shop, a fifth-tier Spirit-level technique whose principles align with Asura Slash, though Thunder Blade Technique is a lightning-based martial art.

Learning Thunder Blade Technique, consuming experience points to elevate it to Pinnacle level.

Elementary Thunder Blade Technique consumes 20,000 experience points to upgrade to Slightly Accomplished, then consumes 40,000 experience points to advance to Room Entering, further consuming 80,000 experience points to reach Mastery.

Lu Yu embarrassingly discovered he was out of experience points.

Thunder Blade Technique requires 200,000 experience points to upgrade from Mastery to Pinnacle; he only has 160,000; even if he reaches Pinnacle level, he doesn't have enough experience points for merging.

Only await next upgrade opportunity.

His mind forcibly filled with memories of practicing Thunder Blade Technique, Lu Yu still needed to digest them.

His head was already dizzy from reversing Qi Blood, the influx of memories left Lu Yu's mind somewhat overwhelmed.

Lu Yu exited the game, lying in bed for half an hour, finally digesting the surplus training memories.

Just as the memories were processed, the black cellphone on the bedside vibrated, displaying an emergency notification.

Reaching for the phone, Lu Yu sat up to check the message.

Still unresponsive to the game-induced injuries in reality, he can move; once Blood Burning Secret Technique's aftermath inevitably impacts reality, he'll suffer a certain degree of influence.

Not as severe as losing all power, unable to move like in the game, but his strength diminishes by five or six levels, maybe even more.

Right when a mission arrives.

Hastily grabbing clothes off the bed, Lu Yu got off, aiming to complete the mission before the aftermath appears.

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