"This grass looks a bit familiar. Have I seen it somewhere before?" Lin Fei looked at the black grass in front of him, always feeling that they gave people a sense of déjà vu.

With a thought, the dimensional space opens up.

An illustrated book appeared in Lin Fei's hand. This illustrated book was made of paper and was very new.

The illustrated book in Lin Fei's hand was given to him by Han Xue. It records a lot of information about plants in the spiritual world collected by humans.

I opened the illustrated book and searched based on my memory, and soon found the exact same black grass.

Lin Fei browsed through it quickly, and then said to himself, "I just said that I have a feeling of déjà vu. Han Xue gave me this illustrated book before. I opened it and looked at it casually, and what I saw was this black tree.

Grass."

This light-phobic black grass has high medicinal value. Unfortunately, its growth environment is a bit harsh and it is not easy to find in the spiritual world.

Researchers at the Psychic Research Institute have thought about artificial cultivation, but there is currently no way to succeed.

After Lin Fei read the introduction of the black grass, he looked around and looked at the black grass growing everywhere, and said with a smile.

"There are so many of these plants growing here. If you tell the investigators when you go back, they will definitely arrange for many people to come here to collect them."

Putting the illustrated book into the dimensional space, Lin Fei picked a few black grasses and put them away, then continued to explore forward.

It was pitch black ahead. As the fireball moved, all the surrounding darkness was dispersed, and the road conditions underfoot were clearly visible.

Lin Fei wanted to go back early, so he moved forward faster.

I originally wanted to spend half an hour exploring this place, but it turned out that the space under this cave was so large that it was beyond imagination. It took only half an hour to explore it all.

"Huh?"

"What sound?"

Lin Fei was thinking about whether he should stop today's exploration here and go back to have dinner before continuing to explore.

At this time, there was a whining sound in the distance, and the sound was very weak.

If the surroundings were not very quiet, it would be difficult to hear the sudden whine.

Lin Fei listened intently, wanting to make sure he heard correctly.

Two or three minutes later, the whining sound that suddenly appeared in the distance continued.

"I heard it right, there was indeed a strange sound coming from that direction."

"What is that noise?"

"Could it be a strange beast?"

Lin Fei thought in his mind, and then he decided to continue exploring for a distance to find out what was making the whine.

…………

The sun in the sky has set, and darkness has enveloped the earth.

Tonight the moon is covered by clouds and everything is dark.

In the critical stronghold of humanity, there are several people with worried faces.

The person in charge of the stronghold stood where Lin Fei left, looking at the horizon with a serious expression.

The investigator responsible for receiving Lin Fei was not very worried, because he felt that with Lin Fei's strength, the insect swarm was not something to be afraid of.

"It's been so long and he hasn't come back yet, so don't let anything happen." The person in charge of the stronghold said worriedly.

"With his strength, even if he encounters danger, it is very simple to escape." the assistant said.

The investigator in charge of receiving Lin Fei wanted to make the atmosphere at the scene more relaxed, and then said, "If even he can't deal with the insect swarm, we will definitely not be able to hold this stronghold in the future.

And that's obviously impossible, so we don't need to be so worried."

A few people were chatting, and a loud sound came from the newly built sports ground in the distance.

After a busy day, people who stay here can relax after the sun goes down.

There are many people playing football and ball on the sports ground, and various sounds can be heard floating in the spacious sports ground.

Because this stronghold has not yet been built, many surrounding areas are undeveloped.

Many creatures looked at the lively stronghold in the dark, their eyes full of curiosity.

Except for some creatures who don't understand how dangerous the stronghold is and will approach it rashly, other creatures who have seen the stronghold take action have expressions of looking forward to a good show.

"Shashasha..."

The grass shook for a while, and as soon as a few weak alien beasts came out of the grass, they were attacked by investigators standing on the watchtower in the distance.

"call out……"

A harsh sound broke through the air, and several golden streams of light hit the heads of the alien beasts, killing them instantly on the spot.

After the alien beasts died, an investigator came out of the stronghold and moved the dead alien beasts into the stronghold.

The edible exotic animals are sent to the canteen, while the inedible exotic animals are transported directly to a special burial place for disposal.

The investigators took action and frightened many strange beasts. The originally noisy beast roars around the stronghold were reduced a lot.

…………

There is a cave in the dark cave.

There were many fireballs scattered around, and large areas of darkness were dispersed by the light of fire.

Lin Fei headed towards the location where the strange sound appeared. Although he had accelerated, he still had not reached the location where the strange sound appeared after so long.

"Strange."

"I've been walking for so long, why haven't I arrived yet?"

"If the sound appears far away, I shouldn't be able to hear the sound."

Lin Fei had a lot of doubts in his heart. He really wanted to stop now and leave.

However, it has taken a lot of time now, and the sunk cost is not low. If I just go back home, I feel a little unwilling.

"Keep walking forward for a while."

"If I still haven't arrived at my destination, I'll go back and have dinner first."

Lin Fei was thinking about dinner and became increasingly hungry.

He opened the dimensional space and took out a peach.

The sound of clicking sounded in this place that never saw light all year round. Lin Fei ate the peaches with relish and was no longer in a hurry to go home for dinner.

Finally arrived at the destination, Lin Fei had just finished eating the peach.

He threw the peach core on the ground, and then controlled the fireball to move forward a certain distance to expand the area illuminated by the fire.

As far as the eye can see, there are some strange plants growing on an empty flat land.

These plants are gray in color and twisted in various shapes.

"So many!"

"With so many strange-looking plants, there should be a water source nearby."

Plants need water to grow. The place where Lin Fei started was very humid. In that environment, a lot of black grass grew.

The place where he is now is a little dry and not suitable for plant growth.

However, he saw a lot of plants now. He speculated that the water resources nearby should be very abundant, otherwise such a scene would not be possible.

Just when Lin Fei was thinking, he heard the strange whining sound again.

This time, because the distance was very close, I could hear it very clearly.

Lin Fei located the location where the whining sound appeared, and then quickly walked forward.

"Click, click, click..."

Lin Feiyue was close to the place where the whine appeared. In addition to hearing the clear whine, he also heard other sounds at this time.

"What is that?"

Lin Fei stopped, looked at a black thing in the distance, and frowned slightly.

"Woo?"

The black thing turned its head and looked at Lin Fei with wide eyes.

"It looks so fierce. I didn't sense any spiritual energy fluctuations in it."

Lin Fei launched a mental perception investigation and found no psychic fluctuations in the creature in front of him. If it were just an ordinary creature, it would not be a threat to him at all.

The clicking sound just heard was caused by this creature chewing on wood.

This was the first time that Lin Fei saw a creature chewing wood. When he was about to take a closer look, he found that the creature made a sudden leap, disappeared on the spot in an instant, came to the front at an extremely fast distance, opened its mouth and bit him.

"Bang."

Facing the attack, Lin Fei calmly waved his hand and struck out.

A gust of wind surged out, hitting the strange black creature and knocking it away.
To be continued...