Looking at the double silver beetle, Richard knew that it was more difficult to deal with with swordsmanship alone. He simply withdrew the big sword into the spatial iron ring, stretched out his hand, and the third ring on his hand was activated, and the "Chain Explosion" magic spell was released.

"Whew!"

A dark red spark the size of a date sprouted and flew swiftly towards the nearest double-silver beetle that had emerged from the ground. After hitting the body of the double silver beetle, the Mars swelled up like an inflated balloon, and then exploded.

"Boom!"

A large ball of flames was born, and most of the shell of the attacking double silver beetle was directly dissolved, but it did not die immediately with its tenacious vitality. At this time, in the remnants of the explosion, another dark red spark the size of a date was born, and its volume expanded again, producing a second explosion.

"Boom!"

The unfortunate double-silver beetle's body was engulfed in flames, and its bones were blown away. Its neighboring companions were also affected, scarred by the blast, and dark green juice oozing from its shattered shell.

Magic Pattern Spell, Zero Ring High-level, Double Burst Explosion!

After seeing the effect of the double series of explosions, Richard nodded with satisfaction, although in the underground laboratory of the laboratory, he had already done experiments and obtained the corresponding data, but after all, it was more real in actual combat.

Next, Richard did not hesitate, and constantly activated the magic pattern, continuously releasing the spell of "chain explosion".

"Boom, boom, boom!"

The explosion sounded like firecrackers, and by the time it had calmed down, the beetle had died cleanly.

Richard exhaled slowly, relaxed slightly, then raised his eyebrows, and looked at the corridor leading to the depths of the tomb, when he heard the sound of a large number of beetles surging in, apparently the whole swarm was alarmed.

Richard's expression froze, and he knew in his heart that what could only be regarded as an appetizer before was now the real test. If he couldn't deal with the incoming swarm, all his preparations would be useless.

Let's see if the huge amount of earthwork he had just worked on could work as planned.

Richard thought so, and the swarm of insects in the corridor had already shown its head.

At the front of the line were a dense mass of black beetles, followed by a silver beetle with a single vein and a double silver beetle with two lines. After that, there are the extremely difficult silver-shelled beetles, and the gold and silver beetles that have not yet been fought.

Richard's eyes narrowed slightly, looking at the army of insects, and as soon as he raised his hand, the third ring was activated again.

This time, instead of a chain of explosions, it was a shard of ice.

The humid air in the hall surged violently, and a large number of water molecules condensed, turning into a diamond-shaped block of pale blue ice that landed in Richard's palm.

With a click, a finger-sized shard peeled off the ice and struck like a bullet at the beetle that rushed at the front.

"Boom!"

The black beetle that rushed to the front, as the weakest in the army of the insect swarm, had little defense at all, and was directly shot through the body by sharp ice fragments, nailed to the ground, and struggled a few times without moving.

"Whoa!"

The shards of ice nailed to the beetle's body shattered automatically, and the cold aura contained exploded, enveloping a small area around it, slowing down the rest of the beetles around it.

The army of insect swarms, which had been advancing in unison and extremely imposing, immediately appeared discordant depressions, but fortunately, the follow-up beetles quickly filled up and continued to attack.

Worms advance and people retreat.

Richard stepped back, retreating as he controlled the ice in his hand to crack continuously, shooting out one shard after another, shooting at the army of swarms.

Richard didn't really want to kill beetles - if he really wanted to kill beetles, it would be more effective to use chain explosions.

The reason why ice fragments are used is actually to disconnect the forward speed of the swarm army from the overall speed, slow down the movement of subsequent beetles, and finally make all the beetles huddle together, maximizing the number of beetles per unit area.

In this case......

Richard condensed into a light blue ice cube again, held it in his hands, and sent cold ice fragments in his hands, greatly slowing down the speed of the insect army, and exiting Hall 1 step by step, retreating into the corridor that had been deliberately changed into a "three-section gourd".

By the time the ice cubes in both hands were all consumed, Richard had already passed through the first section of "Gourd" and reached the narrow checkpoint of the first and second sections.

With the blink of his eyes, Richard found that the army of insects had half-filled the first section of the "belly" of the "gourd".

"Not bad. Richard said in his heart, "But...... It can be a little more extreme. ”

With this in mind, Richard raised his hand, and the fourth ring was activated for the first time, and the greasy swamp spell was released.

"Poof—"

A large amount of viscous black oily liquid suddenly grew on the ground of the tunnel where many insect swarms flocked, and some weak black beetles were directly stuck by the slime and could not move. Some of the more powerful silver-veined beetles struggled to crawl out of the liquid, but their speed was also greatly slower. At this time, the follow-up beetles rushed up impatiently, unceremoniously stepped on the body of their companion in the liquid, and continued to march forward, but accidentally, their feet slipped and immediately fell into the liquid, becoming the paving stone of the beetles behind.

"Whoa......

The insect swarm army followed one after another, relying on the numerical superiority, and forcibly covered the slime on the ground, approaching the narrow checkpoint where Richard was, ready to attack.

When Richard saw it, he didn't have any fear, and with a flick of his finger, a dark red spark the size of a date flew out, crashed into the swarm, and then exploded.

"Boom!"

At the moment of the explosion, it was like popping a balloon filled with flames, and the entire corridor in front of Richard's level quickly burst into flames. The high-temperature flames are like the tongues of ancient beasts, and wherever they lick them, the beetles scream and struggle to die.

The power of the combination of greasy swamp and flame is unleashed!

You know, although the greasy swamp was covered by an army of insect swarms, it did not disappear at all, and it has always existed. In the process of covering the swarm army, many beetles were contaminated with viscous oily liquid, which was like an unstable bomb in the swarm. Once triggered by the heat, the fire will instantly spread to the beetles in the entire corridor, and there is no way to stop it.

So, in just a few moments, hundreds of beetles were killed in the fire.

Of course, a few hundred beetles were just a drop in the bucket for the huge army of beetles, and the death of their companions did not cause any fear among the rest of the beetles, and they continued to rush up with a hiss, fearless of death, rushing into the burning flames, ready to forcibly extinguish the flames.

Richard looked at it expressionlessly, raised his hand and released the second "greasy swamp", and the flames that had just slowed down were immediately like a sleeping beast awakening, mercilessly devouring the beetles that rushed into the field.

"Crackle, crackle!"

After a long time, there was a disgusting smell of burnt smell in the corridor, and the section of the corridor in front of Richard was covered with a large number of charred beetle corpses, densely packed, not to mention thousands.