CLANG!

  Slayer's Black Gold Arm Blade, carrying sharpness enough to slice through the void, chopped viciously onto the Ancestor's nose bridge.

  This time, there was no tearing sound of flesh being cut, only a loud noise like striking a giant bell.

  Massive recoil transmitted up his arm. Slayer's body paused abruptly in mid-air—a sign that the kinetic energy had been completely reflected.

  The Ancestor's face, which should have been sliced open, was now unharmed. A layer of heavy golden light film flowed over the wound area—Absolute Defense from the Heavenly Dao Rules.

  Slayer flipped in the air and landed, showing no surprise.

  One hit ineffective? Then two.

  Click-clack.

  Double-barreled shotgun, point-blank range.

  BANG! BANG!

  Two Rune Burst Shells exploded on the Ancestor's eyeball. But as the smoke cleared, that massive eyeball remained intact, even the mocking expression unchanged.

  The Ancestor laughed wildly, the sound shaking the Blood Sea: "Useless! Mortal! I am one with the Heavenly Dao! As long as the Underworld exists, I am eternal! Your brute force cannot harm a hair on me!"

  Slayer ignored the buzzing of this fly.

  He simply hooked the shotgun back onto his waist, then drew the BFG-9000 from his back.

  Since conventional weapons failed, use high-yield ones.

  Since physical failed, use energy.

  Since one layer of shield won't break, blow the whole sea dry.

  This was Slayer's logic. He didn't solve problems; he solved the carrier of the problems.

  Hum—!

  The BFG began to charge, the green light growing brighter, surpassing even the shot that leveled the Blood Sea earlier.

  On the cliff, Daoist Singularity saw this and his heart stopped.

  "Don't! Don't shoot! That's Causality Reflection! The server will crash!"

  Singularity watched the energy index representing Slayer on his tablet skyrocketing exponentially, while the curve representing the Underworld's structural stability was plummeting vertically.

  The Ancestor's current status was "System Locked." Any overflowing attack damage wouldn't be borne by the Ancestor but would be transferred directly to the Underworld's underlying architecture.

  Simply put: If Slayer fired this shot, whether the Ancestor died was unknown, but the Eighteen Layers of Hell would definitely explode into fragments first. Then everyone would be done for.

  You could be reading stolen content. Head to the original site for the genuine story.

  "Must stop him... no, must Guide him!"

  Singularity knew it was impossible to make Slayer stop. In Slayer's dictionary, there was no "Retreat" or "Ceasefire," only "Get a Bigger Gun."

  Then the only way was to make his attack "Effective."

  "Analyze! Analyze the composition of that shield for me!"

  Singularity bit the tip of his tongue, spraying a mouthful of essence blood onto the Heavenly Dao Tablet.

  "Limitless Heaven and Earth, Ten Thousand Spells Return to Source! OPEN!"

  Countless lines of scrolling code popped up on the tablet screen instantly, faster than the naked eye could catch.

  [Target Status: Causality HP Lock (Invincible).]

  [Source Composition: Celestial Court Backup Computing Power + Underworld Underlying Rules.]

  [Firewall Level: Heavenly Dao Class.]

  [Vulnerability Scan: In Progress... 0%.]

  "Damn it! This turtle shell is too hard!" Singularity sweated anxiously. "No physical weakness! This is a conceptual defense!"

  Seeing Slayer's BFG charge nearing completion, the green light of destruction was already causing surrounding space to collapse.

  Only three seconds left.

  A glint of madness flashed in Singularity's eyes.

  Since it can't be cracked from the outside, find it from the inside!

  He violently swiped out a red special window on the tablet—his highest authority backend as the "Underworld System Administrator."

  [Operation: Enable Wall-Hack (Debug Mode).]

  [Target: Share with Unit [Slayer].]

  Buzz!

  Slayer's tactical visor flickered suddenly.

  The originally solid Ancestor instantly turned into a 3D structural diagram composed of countless lines and nodes in his vision.

  Beneath that layer of golden shield displaying the word "Invincible," Slayer saw something.

  It was a tiny, black singularity located deep within the Ancestor's glabella, wrapped in layers of data.

  That was the Ancestor's "True Spirit Core."

  And in the top right corner of the visor, a line of red tactical hints forcibly injected by Daoist Singularity popped up:

  [Hint: External defense indestructible.]

  [Weakness: Shield refresh interval (0.0001s).]

  [Tactical Suggestion: Sync Strike.]

  Slayer stopped.

  Although he didn't read walkthroughs, he understood Weakness Markers.

  That red weakness marker was flashing at an extremely high frequency.

  That was the vacuum period of the shield during every data refresh—extremely short, undetectable even by gods.

  Slayer didn't lower the BFG.

  But he adjusted the angle of the muzzle.

  He was no longer aiming for a carpet bombing of the Ancestor's face.

  He was Waiting.

  His eyes, sharp even behind the faceplate, locked dead onto that flashing frequency.

  Tick, tick, tick.

  In Slayer's perception, time seemed to slow down.

  He could see the breathing-like rhythm of that golden light film.

  He could hear the imperceptible intake of breath amidst the Ancestor's laughter.

  Now.

  Slayer pulled the trigger.

  But not to fire the energy ball.

  Instead, he activated the BFG's "Overheat Vent" mode.

  Whoosh—!

  There was no massive explosion.

  A concentrated, high-density stream of thermal energy, like a green needle tip, stabbed precisely into the gap of that light film in that 0.0001 second interval like a precision scalpel.

  Pfft.

  A soft sound.

  The Ancestor's laughter stopped abruptly.

  He felt a chill in his glabella.

  Although it didn't cause fatal damage, the originally perfect "Invincible Shield," due to the interference of this strike, experienced a momentary Lag.

  The golden light flickered.

  "Observation vs Cracking."

  Singularity collapsed on the ground, gasping for air, feeling drained.

  "Close call... As long as he's willing to look at the weakness, this game is playable."

  Slayer wasn't discouraged because the attack didn't one-shot kill.

  On the contrary, he put away the BFG.

  Since he knew the principle, there was no need to waste ammo.

  He popped out the Black Gold Arm Blade again.

  This time, his look changed. It was no longer the cold indifference toward a dead object, but the focus of a hunter spotting prey's flaw.

  As long as you can bleed.

  As long as you can be hit.

  Then you will die.

  Slayer lowered his stance, assuming a charging posture.

  "Next chapter, The Unbreakable Firewall. Singularity finds that even seeing the weakness, the thickness of that firewall... is still lethal."