Zhu Linyuan thought, and with a thought, a gold-eating insect egg instantly appeared in his palm.

This gold-eating insect egg is about the size of a palm, is entirely golden, and looks like a soft-skinned golden egg, with strange lines on it.

"Gold-eating bug."

Zhu Linyuan murmured and looked at the introduction on the system panel.

After a moment, a look of surprise appeared on his face, and a hint of joy flashed in his eyes.

"So it's this kind of thing."

Zhu Linyuan smiled and looked at the gold-eating insect eggs in his hand, his eyes a little fiery.

The ability of this gold-eating insect is very simple, it is to eat metal and then excrete it.

However, what this gold-eating insect excretes is the essence of metal, which is the so-called fine gold.

Moreover, this gold-eating insect has a huge appetite and can eat all day long.

According to the system, a mature gold-eating insect can eat hundreds of kilograms of ordinary metals such as steel in a day.

Zhu Linyuan has ten insect eggs in his hand, which means that if all these gold-eating insects hatch and are cultivated to a mature state, they can eat several tons of metal in a day.

Then a large amount of fine gold is produced.

According to the system, the value of fine gold is much higher than that of the original metal. Not only is it harder, but it also has stronger toughness, which is equivalent to an all-round improvement.

Thinking of this, Zhu Linyuan's eyes were quite fiery:

"In this way, as long as there are enough gold-eating bugs, I can completely recycle metals in batches, then feed them to these gold-eating bugs, and finally turn them into fine gold."

"Although ore is hard to find now, there are still a lot of metals in Nancheng."

Zhu Linyuan thought secretly.

"The abandoned cars on the road, the telephone poles on the roadside, the steel bars in the buildings..."

"As long as you want to look for it, there is no difficulty in finding some metals in such a big Nancheng."

"The problem now is the number of gold-eating insects."

Thinking of this, Zhu Linyuan frowned slightly: "There are differences between gold-eating insects and treasure-seeking ants."

"The role of treasure-hunting ants is to search for mineral veins. Just one of them is enough. But gold-eating ants continue to convert waste metal into fine gold. In the future, the scale of the gathering area will become larger, and the demand for this aspect will be much greater. The gold-eating ants will

The more the quantity, the better.”

"I have ten of them now, but I don't know if they can reproduce on their own."

Zhu Linyuan shook his head, feeling that the probability of this type of Zerg being able to reproduce on its own was probably low.

"Forget it, there's no point in thinking about it now. Let's wait and see after hatching it."

Zhu Linyuan shook his head and stopped worrying about this matter.

"Lin Xin is the only one left now." Zhu Linyuan murmured softly: "I hope you can bring me some surprises."

With that said, he got up and walked outside.

…

At this time, in the secret realm of trial.

"It's the twenty-ninth cave."

Lin Xin, dressed in a white outfit and wearing a white veil, was panting slightly. She had obviously spent a lot of energy, but her eyes were very bright.

In front of her, there was an ugly Zerg corpse lying. The Zerg corpse had been broken into pieces and the surrounding area was in a mess. It was obvious that the battle just now was very fierce.

After twenty-nine consecutive battles, Lin Xin felt like she didn't have much strength left in her body.

But she was still extremely excited when she thought that she was about to pass the thirtieth level.

Through her last adventure, she had already discovered the benefits of this secret trial realm.

That is, as long as you pass the entire ten levels, your strength will increase.

She felt the improvement in the previous tenth and twentieth levels.

Although it is not a lot, it is quite considerable.

Moreover, this is an improvement independent of evolution, and the more the better.

"The improvement at the twentieth level is much stronger than that at the tenth level. According to this logic, the improvement at the thirtieth level should be much stronger."

Thinking of this, Lin Xin was quite excited.

But she did not break into the next cave directly. Instead, she rested on the spot for a while and regained her strength before firmly entering the thirtieth cave.

After walking into the thirtieth cave and seeing the environment clearly, Lin Xin froze on the spot.

"What the hell is this?"

After Lin Xin saw the strange thing in front of her clearly, she frowned and said, "Lair?"

At this moment, she saw that she was in an extremely large cave, and in the center of the cave was something that looked like an insect nest.

This thing is about seven or eight meters tall and is as big as a manor.

"Is this thing an insect nest?"

Lin Xin did not step forward rashly, but carefully observed at the entrance of the cave.

She has discovered a pattern of these bugs, that is, these bugs will not leave their cave, which means that as long as she exits the cave in time, these bugs will not chase them out.

But this didn't mean much for breaking into the cave. After all, even if these bugs didn't chase them out, she wouldn't be able to hide outside for the rest of her life. Over time, she would starve to death and become dehydrated.

However, in this situation where the strength of the enemy is unknown, this method is quite useful.

At least the possibility of being killed by a sneak attack was avoided.

Just when Lin Xin hesitated to move forward, there was sudden movement in the nest in the center of the cave.

"Keng"

"Keng"

A sound like the clash of gold and iron was heard coming from the nest, and then a fiery red figure walked out of the nest.

This fiery red figure walked upright, about two meters tall, and was covered in solid scales, as if wearing a piece of fiery red scale armor. As it walked, its whole body made the sound of gold and iron.

In addition, its upper limbs are two blade arms, its lower limbs are extremely thick, and there is a pair of thin but tough transparent wings on its back.

At this time, its pair of compound eyes were staring at Lin Xin.

"This insect feels pretty strong."

Lin Xin secretly increased her vigilance, and the weapon in her hand was already unsheathed.

At this moment, the wings behind the fiery red figure vibrated rapidly, and at the same time, the lower limbs exerted force and rushed towards Lin Xin like flying.

"——Shua!"

In mid-air, the fiery red figure slashed out two sword arms, directly slashing towards Lin Xin's fair and slender neck.

It was clear that he was going to kill with one strike.

"Nearly second-order speed."

However, Lin Xin did not panic at all. She analyzed the strength of the insect monster in front of her in her mind, and at the same time, she took the insect's blow with the weapon in her hand.

"The first-level lethality is almost equivalent to the first-level limit."

Lin Xin frowned slightly, suddenly changed her moves, and slashed directly at the Zerg warrior's head.

"Click"

A fiery red head flew out immediately.

This Zerg warrior fell down like a robot without power.

"The first level of ultimate defense."

Lin Xin's brows furrowed even more.

"Apart from the fact that this guy's speed is almost equivalent to the second level, he is just a first-level insect. How could he appear in the thirtieth cave?"

Lin Xin was puzzled. After all, as early as the twentieth cave, those Zerg had already reached the second level of strength.

According to her estimation, this thirtieth level should be filled with third-level Zerg guards.

The Zerg in front of us is simply too weak.

Just when Lin Xin was confused, there was sudden movement from the nest not far away.

"Boom"

"Boom"

"Boom"

Lin Xin looked subconsciously.

The next second, more than a dozen fire-red Zerg warriors rushed out of the lair.
Chapter completed!