High-level martial arts: Contract cashback, invincible starting from the Zerg.

Just as the city of Sierra was entering full preparation for war.

All the guard captains entered the training rooms in Sera City for their final combat enhancements.

At this moment, Chen Feng was shirtless, sitting upright in one of the cultivation rooms, cultivating.

At this moment, Chen Feng was practicing the "Soldier Body Forging Technique". His body was broad and thick, like an indestructible shield. Every rise and fall of his chest seemed to contain endless vitality.

The muscles on his arms were like coiled pythons, thick and powerful, with hot blood surging in his veins, as if they were about to burst forth with surging power at any moment.

However, what attracted Liu Siyu the most was Chen Feng's eight-pack abs, which looked like plates of armor, hard and firm, without a single bit of excess fat.

As Chen Feng is about to break through the first level of "Soldier's Body Tempering Technique".

His brow furrowed slightly, as if he were enduring increasingly intense pain.

"impossible..."

"I'm already a level 10 Demon Slayer. Even if I'm not a strength specialist, my basic attributes should be enough to easily break through to the 10th level."

"How could it be so difficult to break through?"

Chen Feng slightly relaxed the flow of magic power in his body and began to carefully observe the process of his body's transformation.

Chen Feng quickly discovered the problem.

"Soldier Body Forging Technique" was created by Liu Xu, a berserker of the Hong level.

By continuously training in a psionic environment, one can effectively reduce the reliance on psionic skills and significantly enhance the physical fitness of combatants, thereby better compatibility with psionic techniques.

However, Liu Xu was not a demon slayer.

Therefore, since both involve modifying bodily functions, the Demon Slayer's modification system will conflict with the "Soldier's Body Forging Technique" training method.

To cultivate both simultaneously is five times more difficult than for an ordinary cultivator!

Seeing that he was unable to break through the first level of the "Soldier's Body Tempering Technique" for the time being, Chen Feng pressed the stop button in the training room.

A bold idea suddenly rushed into Chen Feng's mind.

Chen Feng suddenly remembered the potion that Xu Ri Dong had mistakenly given him—the interbiological fusion potion.

Although the potion is expensive, it can greatly enhance the compatibility and fusion of different combat abilities and racial abilities.

Chen Feng can find any resource he possesses in this world through the Lucky Contract System.

It's just a matter of whether you have enough luck.

Thinking about this...

Chen Feng immediately opened the resource library in the Lucky Contract system and quickly found a similar alternative.

[Lucky Contract: Congratulations, host, you have spent 13000 luck points to purchase Fusion Potion Type III]

[Lucky Contract: Fusion Potion Type III can be used in combination. After use, it permanently unlocks the Body Fusion attribute and increases the fusion attribute value to 150.]

[Lucky Contract: Congratulations, host, for achieving a mid-level achievement. Reward: 1500 Luck Points]

Once the fusion potion began to take effect in Chen Feng's body, he immediately pressed the button to continue cultivating.

The energy contained in the Sergeant's Body Tempering Technique was like scorching magma, rampaging through Chen Feng's body with primal and wild power.

At the muscle level, this energy is like countless tiny yet resilient steel needles, piercing deep into every muscle fiber. It tears apart the originally delicate and fragile muscle tissue in an almost brutal manner.

The sorcerer's magical energy rapidly surges into the damaged muscle cells, bringing abundant nutrients and repair factors.

Under the combined transformation of these two energies, muscle cells begin to divide and proliferate wildly, and new muscle fibers and neural pathways are constantly generated, becoming thicker and denser.

Even if it's just sitting in the meditation room.

Chen Feng could feel every muscle in his body storing astonishing energy at an incredible speed.

In Chen Feng's mind...

That once insurmountable chasm—the final shackle of the first level of the "Soldier's Body Forging Technique"—is crumbling at a visible speed...

......

After Chen Feng finished training.

Chen Feng went to a nearby convenience store, bought a bottle of mineral water, and gulped it all down.

Then he slumped down on a chair outside the convenience store.

I looked up at the few scattered stars in the sky.

For some reason, after strengthening his physical strength to the second level of "Soldier Body Forging Technique", Chen Feng felt a lot of emotional turmoil.

Many memories that even Chen Feng had forgotten were rising from the cold lake bottom and surfacing one by one.

Chen Feng took a deep breath, went into the convenience store, bought two bottles of beer, and placed them on the counter, preparing to use his pass to swipe his card.

"Brother Jun, that bucket of water just now was 1.5 liters..." the waiter kindly reminded him.

Chen Feng looked up at the shop assistant.

The shop assistant was a young boy, neatly dressed, and had a particularly friendly smile.

It seems they've only been here a short time...

"Yes, what's wrong?" Chen Feng asked.

"Under normal circumstances, an adult's stomach capacity is about 1 to 1.5 liters. When a large amount of water is quickly poured in, the stomach wall will be overstretched, which may cause a strong feeling of fullness and pain, and may even pose a risk of rupture," the boy reminded with a smile.

"I know about this risk. I am a Tier 1 combatant, and my body has been enhanced. I won't get hurt," Chen Feng explained.

"Sir, you're smart, but you're emotionally hurt. I think you might need to consult some experts so you can do something better for yourself," the boy continued to tell Chen Feng.

Chen Feng looked at the boy, although he partly agreed with what the boy said.

But the boy wasn't even a combatant, he wasn't even a third of my age, and he had never experienced any hardship.

What gives him the right to lecture himself like that...?

"You should mind your own business first..." Chen Feng said coldly.

After Chen Feng swiped his pass on the card reader, he picked up two bottles of beer and walked outside.

Chen Feng casually found a step and sat down.

Under the dim glow of the streetlights, the evening breeze, like a gentle yet slightly cool hand, stirred Chen Feng's thoughts.

The wind carries the unique atmosphere of the city night, with the aroma of smoke from nearby barbecue stalls and the faint fragrance of roadside flowers and plants at night.

Chen Feng slowly unscrewed a bottle of beer, tilted his head back, and gulped it down.

The icy liquid slid down his throat, stirring up a bone-chilling cold within him, only to be instantly melted away by the surging heat within him.

That burning heat was the pent-up resentment, unwillingness, and helplessness that had been building up in my heart for a long time.

But now, under the influence of alcohol, it became even more turbulent.