After the research of the healed light insect is completed, then the next step is the cultivation of the rock hard worm.

It's just that it's late today, and Zhizhen is tired for a day, so I don't remember cultivating at this time.

Referring to the situation of the healing light worm, Zhizhen was already quite sure in his heart that he would be able to successfully breed a new rock hard worm.

He said a word to the Great Immortal and rested.

In this regard, the Great Immortal naturally agreed, and originally he advocated that cultivation should be combined with work and rest.

Spiritual practice is important, but it's not a good thing to be too tense either.

Because of the successful cultivation of the second generation of healing insects, Zhizhen's tense nerves have been greatly relaxed these days.

With the joy of the second-generation healing insects and the expectation of the second-generation rock hard insects, in just a few minutes, Zhizhen fell asleep.

Sleep until dawn.

Early the next morning, at about seven o'clock, Zhizhen got up.

After eating some food sent by Kojiro, Shijin was ready to start cultivating rock worms.

After he woke up, the Great Immortal also woke up, every day, and Zhizhen was already surprised by this.

Xindao must have let the great immortal not sleep well, and he was slightly apologetic.

However, Zhizhen knew that he was thinking too much, the great immortals were immortals, and there was no such thing as sleeping, which was called rest.

Zhizhen chatted with the Great Immortal for a few words, and then began today's cultivation content.

First, he first entered the immortal mode, and then summoned nearly two hundred rock hard insects from the insect tank, floating in the air.

Just like when cultivating the Healing Light Worm, he commanded a rock hard worm to fly into his palm, wrapped it in natural energy with chakra, and began to cultivate the rock hard worm.

As a worm, the strength of the rock hard worm is far from comparable to that of the healing light insect, receiving the chakra and natural energy, without a little restlessness, it is still crawling slowly in Zhizhen's hands.

Seeing this, Zhizhen's expression was immediately overjoyed, judging from this situation, the rock hard insect should be able to withstand more natural energy.

It's just that I don't know if more natural energy can make the rock hard worm more powerful.

In this regard, Zhizhen is full of expectations.

Compared to the healing light worm, the rock hard worm is the attack method that Allah wants, and the stronger the rock hard worm, the more direct growth is his strength.

Therefore, Zhizhen's expectations for rock hard insects are a little higher than those for healing insects.

However, the rock hard worm that received the natural energy did not change in the slightest, which surprised Zhizhen a little.

The Great Immortal looked at it and said, "This little guy's body is much harder than your Healing Light Worm, I'm afraid the natural energy just given is not enough to make it produce a qualitative change." ”

Zhizhen thought for a moment when he heard this, and said, "So that's the case, it seems that the rock hard worm needs more immortal chakra." ”

With that, Zhizhen poured pure natural energy into the body of the rock hard worm again, and did not wrap it in chakra.

As soon as there was a lot of natural energy, the rock hard insects also began to be restless, like the healing light insects, and jumped into the air for a while.

Seeing this, Zhizhen's heart jumped and said, "Is this about to explode?" ”

He stared at the rock hard worm, trying to see the changes in the rock hard worm.

Just when Zhizhen thought that the rock hard insect would explode, the rock hard insect suddenly quieted down, and slowly flew back into Zhizhen's palm, no longer moving.

Zhizhen sensed slightly, but found that the rock hard worm in the palm of his hand had entered the breeding period.

Suddenly, a big question mark popped up on Zhizhen's head: "After this rock hard worm withstood my natural energy, it actually started to reproduce?" ”

Zhizhen's reaction greatly surprised Zhizhen, he looked at the Great Immortal and asked, "Great Immortal, do you see anything?" ”

"Hmm." The Great Immortal nodded and said, "It seems that this little guy has a different way of dealing with natural energy than the Healing Light Worm. The healer insect is used to strengthen itself, while the little one is used to reproduce offspring. ”

"Hmm......" The Great Immortal thought for a moment and said, "This is probably because the rock worm is a vegetative reproduction relationship. ”

As the immortals of the Zerg, the Great Immortal can naturally see the situation of all kinds of insects at a glance.

He blamed the situation of the rock hard worm on the way it reproduces.

Zhizhen fell silent when he heard this, thought about it carefully, and asked a little incomprehensible, "But why is this happening?" ”

"Because of instinct." Great Immortal said: "Although low-level insects such as rock hard insects do not have the ability to think, they have the instinct to protect their offspring like other creatures. It is probably unconscious that it prepares to share the natural energy with its descendants. ”

"Instinctive?" Zhizhen thought about it and understood.

He remembered some of the things that the original had learned in the past.

Insects are creatures that do not have the ability to think, and although they have a complete nervous system, their brain structure is not as complex as that of higher animals.

The external response is a nervous response of a stress nature, relying on external stimuli to complete a series of activities, which is the so-called instinct.

This is the same situation as most insects on Earth.

However, the insects of the Giant Leaf Valley, because this world has a chakra relationship, a large number of chakras, their bodies have undergone considerable changes.

In the Hokage world, the strength of any creature is related to chakra.

As mentioned earlier, the size of the chakra determines the size and strength of the creatures in this world, and even their intelligence.

The rock hard worm only contains a faint chakra in its body, and this chakra is not enough for the rock hard worm to get enough qualitative change.

But even so, as a creature, the rock worm still has the instinct to protect its offspring.

Coupled with the way it reproduces, this is why this happens.

"I wanted to keep the power for my children." Zhizhen said with some emotion, looking at the rock hard insect in his palm, his eyes gradually softened.

He suddenly remembered what his uncle Zhiwei had said to him.

Little bugs, too, great souls.

Zhizhen looked at the rock hard worm that was about to reproduce, and felt a sense of identity with this sentence in his heart.

Seeing this scene, the Great Immortal seemed to understand a little why he would foresee Zhizhen.

He saw respect for these little guys in Zhizhen.

"What's next?" The Great Immortal asked.

"What else can I do, wait for it to give birth to its baby." Zhizhen chuckled and placed the rock worm on the ground.

He didn't need Chakra to urge the rock hard worm to speed up its reproduction, and let it slowly digest this energy.

And he himself began to close his eyes and practice, waiting for this rock hard worm to give birth to its child.

Seeing this, the Great Immortal smiled and began to close his eyes and wait.

About two hours later, a crunch caught the attention of the duo.

Zhizhen and the Great Immortal opened their eyes at the same time and looked at the rock hard worm.

A burst of brown light emitted from the surface of the rock hard worm's body, accompanied by a cracking sound.

When the light cleared, a small rock worm crawled out of its body.

Zhizhen looked overjoyed, quickly took off his sunglasses, and took a closer look at the rock hard worm.

In order to look at it carefully, Zhizhen also ripped off the vines in the room and lit them with fire as light.

At this look, Zhizhen found that the newly-born rock hard worm seemed to be darker than the original rock hard worm's body color, like dark brown.

And it gives people the feeling that it seems to be harder, and in the light of the fire, the body surface of the second-generation rock hard worm is shining.

Not only that, but the most obvious change made Zhizhen a little surprised: "Actually grew a second pair of wings?" ”

He also thought that he had seen it wrong, and after a closer look, the rock hard worm had indeed grown a second pair of wings.

A pair of big and a pair of small. Two pairs next to each other.

What does that mean? Has the ability to fly been enhanced? Can fly faster?

Zhizhen was a little puzzled, but he didn't dig deeper, pulled out the kunai, and gently aimed at the back of the second-generation rock hard worm.

Then he slowly exerted his strength, and then a scene that surprised Zhizhen happened.

With a crisp sound, the tip of his kunai actually broke!