Chapter 391: Execution Immortal Sword appears, high-energy particle cannon

In the technological universe,

Qin Mu was hovering above the Execution Immortal World, which was the cage.

Lasting three days,

the Weapon Laboratory finally finished its research and developed the legendary concept-level weapon blueprints.

Qin Mu, at the first opportunity,

followed the parameter instructions on the weapon blueprints and mobilized strong interaction force to carry out the corresponding manufacturing.

Not long after,

a crystal clear, unremarkable water droplet appeared.

Around its body, there was no energy fluctuation,

yet it was permeated with strong interaction force.

It was incredibly smooth.

Every moment, it was emitting detection waves, collecting energy fluctuations from the entire world.

"The concept-level probe has finally appeared..."

Qin Mu's expression was also somewhat excited.

Gazing at the water droplet in front of him, which was at absolute zero, absolutely smooth, and had no vomit,

he directly summoned the Execution Immortal Sword that was guarding the east of the Execution Immortal World.

At this time,

several years had already passed in this cage.

The three old men had tried many times, but they could never break the cage barrier.

In the end, they simply gave up for the time being.

Instead, they began to research how to let the immortal cultivators settle down in this world.

Several years had passed.

In the Immortal Execution World, sects were numerous.

It had the potential to restore the scene of the past immortal cultivation world.

Now,

they didn't have to worry about the crisis of world destruction anymore.

The only difference...

was that in this world, they couldn't obtain freedom.

Subsequently,

Qin Mu's heart moved, and he transmitted a will.

"Immortal Execution Sword, come out and see me!"

In the east of the Immortal Execution Sword Array platform, a giant warship roared to life.

It detached from the array map,

rushed into the sky,

and turned into a stream of light.

In an instant, it arrived in front of Qin Mu.

It vibrated and clanged continuously, appearing very excited.

"Immortal Execution Sword, pays respects to the Heavenly Emperor!"

Qin Mu examined the giant sword emitting green light in front of him and nodded.

He bestowed the concept-level weapon Water Droplet upon it.

"This object is a concept-level weapon; below the Supreme God, there is nothing it cannot break. This time, I give you a task..."

Qin Mu took action directly,

modifying the Water Droplet and integrating it into the Immortal Execution Sword.

The reason he bestowed it upon the Immortal Execution Sword...