Knock knock~

The giantess strode in front, and Lin Fan quietly followed, far away.

The giantess slanted through the woods to the foot of a mountain.

She began to climb the mountain, all the way to the halfway point of the mountain.

The giantess seems to walk very leisurely, but she is tall and has long legs, very big steps, and she is not afraid to pull eggs, so she actually walks very fast.

Lin Fan had a hard time following, but at least he didn't lose it.

Fortunately, the giantess didn't run, otherwise with her D-level strength, she would run at a speed like the wind, and Lin Fan wouldn't be able to catch up even if she had eight legs.

Probably because the giantess opened the road in front, it was safe along the way, and Lin Fan did not encounter any danger.

Finally, the giantess stopped in front of a cave. Lin Fan stopped at the same time, hid behind a rock from afar, and quietly checked with binoculars.

That's definitely not a cave!

The entrance to the cave could not have been so large, nor could it have been so boxy, let alone the traces of artificial excavation and a large number of man-made instruments.

Thinking of the nameplate on the giantess's wrist, Lin Fan guessed that this cave might be a laboratory—a laboratory that I don't know when it was built or why it was abandoned.

Lin Fan carefully observed the traces near the entrance of the cave through a telescope, and roughly estimated that the laboratory had been abandoned for at least a few decades.

Knock knock~

The giantess entered the cave, and the footsteps gradually died down, which proved that the cave was deep.

Lin Fan didn't hesitate in his heart, he put away the binoculars and decisively touched the depths of the cave.

Sniff~

After entering the cave for a while, Lin Fan stood against the wall and sniffed his nose.

The smell in the cave was okay, Lin Fan breathed a sigh of relief in his heart, which proved that there was a relatively good ventilation system inside the cave, and he didn't need to worry about lack of oxygen or gas poisoning inside.

Black!

It's so dark!

The sunlight was blocked, and as Lin Fan gradually touched the depths of the cave, he gradually lost his five fingers, and there was a dead silence all around.

Click, click!

Although Lin Fan's own footsteps were very soft, they were a little harsh in this quiet environment. The darkness was like an abyss, and the silence was like a demon, gradually devouring Lin Fan's courage, making him come up with the thought of "don't venture again" more than once.

Exhale ~ inhale ~

Lin Fan's body was close to the wall and stopped, using the "Vajra Demon Sutra" to record the trick to breathe, gradually stabilizing his heartbeat, and his heart also regained his courage.

Click~

Lin Fan took out the flashlight from the storage space, turned on the switch, and the light instantly sprinkled all around. This thing was prepared by Tongbo, Lin Fan had already used it once in the sewers of the Broken Military City, and when he ran out, he put it in his backpack.

This light source is especially convenient at night or in this dark cave.

The light of the flashlight was too dazzling, Lin Fan was a little worried about being exposed, and hurriedly blocked the light source with his hand, leaving only a thin slit between his fingers. The light immediately weakened, but it could still dispel the darkness and give Lin Fan great courage, and he finally stopped stumbling when he walked.

Lin Fan saw the surrounding environment clearly through the light.

Where he was now was a long tunnel, decorated as a corridor, with traces of metal brackets and cement reinforcement on top, as well as dense ventilation ducts and electric light wires — no electricity, of course.

There are two doors facing each other every dozen meters or so on both sides of the corridor, some doors open and some closed. Lin Fan looked through the open door and saw that there were a lot of huge experimental tables and instruments in the room.

Sure enough, this is a secret laboratory.

Lin Fan didn't rush into a certain door to check, he focused his attention on the ground under his feet.

The dead E-class wolf was dragged by the giantess by her tail, and although it had almost lost all of blood along the way, it still left a clear trail of being dragged on the smooth stone floor.

The traces revealed the location of the giantess - Lin Fan followed the traces and looked up, the giantess should still be deeper in the corridor.

Now that he had already walked here, there was no reason to turn around and leave, Lin Fan followed the traces and continued to quietly move towards the depths of the corridor.

“oh，yeah~yeah~”

Lin Fan advanced a distance closer to the edge of the corridor when he suddenly heard a strange sound coming from in front of him

Click~

Lin Fan hurriedly turned off the flashlight and followed the sound to move forward in the dark. After walking forward for a while, there was suddenly a light in front of him, and Lin Fan saw the road clearly and walked faster.

Suddenly, the front suddenly opened up, the light became brighter, and Lin Fan finally saw everything clearly.

Here is a larger cave, looking at the decoration should be the hall. The area of the hall is very open, the size of a standard football field, and the height is at least fifty meters, as if the entire mountainside has been hollowed out!

The light came from overhead, Lin Fan raised his head and saw large and small holes between the reinforced iron frame and the ventilation duct, and the sunlight climbed in along these holes, dispelling the darkness.

One of the largest holes was at least two meters in diameter, and Lin Fan could even see the blue sky and a big tree outside through this hole.

The roots of the tree are deep and entrenched between the reinforced iron frames, and the thick and thin windings are densely packed - this artificially dug mountain hall has not been able to withstand the erosion of time and nature, and the top has begun to leak.

"Wow~Wow~"

The strange sound sounded again, Lin Fan followed the sound, suddenly his pupils shrank, and he subconsciously leaned on the stone wall next to him to find cover, took out the sniper rifle, and aimed at what he saw.

It was two giants hugging each other, one on and one down!

Below is the giantess Lin Fan has seen, and above is a strange giant, a male, much taller than the giantess.

At this time, he was doing indescribable things with the giantess, and the sounds of "whoa" and "yes, yes" came out together.

Lin Fan's gaze moved down from the two shameless test subjects and fell on their bedding.

It was a nest of hay and stray fur.

A charred wolf's head was placed next to the nest, and with the violent movements of the two giants, the wolf's head shook a few times, and finally rolled to the side.

"It seems that these two giants have eaten the corpse of the E-class giant wolf, and they are really full of thoughts***! These two giants live like beasts......"

Wow~Wow~

The strange screams became louder, and the two giants gradually reached their peak, and Lin Fan, who was observing the situation on the side, frowned, and the picture that happened below suddenly became a little unbearable to look at directly.

The giantman seemed to be looking for a greater thrill, and scratched the giantess vigorously with both hands, breaking the skin of the giantess's upper body and bleeding miserably.

Lin Fan even saw that a headlight was scratched!

The giantess was also not polite, her sharp nails scratched the back of the giant man directly, and Lin Fan even saw the white bones on the back of the giant.

The two of them were trying their best to hurt each other, and the damage was fatal enough for ordinary people, but they had a weird smile of satisfaction on their faces, as if otherwise, they couldn't feel excited!

Lin Fan's face twitched when he saw it, and he couldn't help but want to look away, but at this moment, a thick liquid suddenly gushed out from the bodies of the two giants, quickly repairing the bodies of the two giants.

Lin Fan suddenly remembered something, and immediately covered his nose with his hand.

The next moment, the stench followed!

After a long time, the two giants finally had enough, spread their hands, and lay on the ground panting.

Ten minutes later, all the wounds on the two giants were restored, and the broken headlamp was restored, even bigger and whiter than before!

What a perverted resilience!

Lin Fan had been observing from the side, and at this time, he couldn't help but sigh again in his heart, and at the same time he was full of curiosity about this laboratory.

What's in this lab? What made these two giant monsters?