The faint green light seems to reflect the huge grassland around it.

The incomparably large and rich breath of life also poured out frantically from the small hole in front of him.

couldn't help but be startled, Mu Chen reacted, and hurriedly wiped away the dirt around the cave in front of him.

It wasn't just surrounded by dirt, after clearing the surrounding mud, Mu Chen found that the hole in front of him, which was glowing green, that is, constantly exuding an incomparably huge breath of life, was actually a very standard circular hole.

The standard is like the mechanical process of pre-humans.

After looking at the thickness of the wall of the cave in front of him, it was almost the same as a door, and Mu Chen knew that with the small hole in front of him, he would definitely not be able to take out the treasures hidden in it.

Just looking at his hands full of dirt, Mu Chen didn't want to continue digging anymore.

After roughly wiping his hands, Mu Chen gently put his palm on the wall of the cave below the entrance in front of him, and the spiritual power in his body worked slightly, only to hear a "click", and the surrounding soil was shaken by all of it.

It turned out that when Mu Chen looked at the thickness of the wall of this cave, he had already thought of a countermeasure.

If the walls of this cave are thick enough, then you can use your spiritual power to shake away the surrounding soil. This way, you don't have to use your hands to throw away the dirt anymore.

After all, although Mu Chen didn't have any reluctance, it was better not to have such a dirty job.

Of course, if the wall of this cave is not as thick as Mu Chen imagined, and it cannot withstand the impact caused by the spiritual shock, then Mu Chen has no choice but to continue to obediently dig open the attached soil around it to see if there are other entrances or mechanisms around this cave entrance.

Because this cave entrance is too standard, the standard is not like a masterpiece of nature at all, although nature is a miracle, but Mu Chen is more convinced, this may be a certain base of the former human race.

But fortunately, the thickness of this cave wall finally met Mu Chen's expectations, allowing Mu Chen to use his spiritual power to shake the surrounding attached soil.

This can be regarded as lightening Mu Chen's work from a certain angle.

I saw that with the entrance of the cave as the center, the soil in a radius of nearly one meter or so was shaken open by the spiritual power injected by Mu Chen, although there was still a lot of dirt to cover it, but at least a silhouette had already appeared to Mu Chen in front of it—the outline of a gate that was clearly built by man.

On the inside of the outline, that is, at the bottom right of the cave entrance, there seems to be a recessed mechanism, although it has been covered by dirt, but after Mu Chen's careful cleaning, it can still be seen that the structure of this mechanism has not been damaged.

It's just that for this organ, Mu Chen and Song Qi are in difficulty.

Because this mechanism looks like an ordinary hole from the outside. But if someone puts their finger into this hole, they can catch a lot of tiny bumps, some of which seem to be very loose, and some of which can be pressed in.

It seems that this mechanism is like a combination lock, but Mu Chen and Song Qi don't know the password.

Can't you just use brute force to break open the hot path gate in front of you?

The answer is yes.

It's not the first time I've entered these opportunities, and for unexpected scenes like the wooden door in front of me, Mu Chen will take it as the center and think carefully outward.

For example, just now, when Mu Chen gently placed his hands under the entrance of this cave, using the spiritual power in his body, shaking the soil away, he also carried out a probe of the entire wooden door and all the situations that could be perceived in the wooden door.

Then, I also found a rather surprising relationship.

This wooden door seems to have a certain aura connected with the treasure contained in it, if the wooden door encounters some strong stimulus, then the treasure may take some protective measures, or even self-destruct.

Therefore, this is the reason why Mu Chen and Song Qi did not dare to use brute force to directly break open this wooden door.

But Mu Chen and Song Qi didn't know anything about the combination lock on the wooden door, and for a while, the situation was so stiff.

Gently standing on tiptoe and looking in through the hole, Song Qi could clearly see that on a small platform inside the wooden door, there was a green crystal-like object.

And such abundant life energy is emanated from this.

Among the bloodlines and the spells he cultivated, Song Qi was mainly healing, and when he felt the rich life energy around him, he couldn't suppress the excitement in his heart.

Right now, the green crystal-like object seen through the hole in the wooden door made Song Qi salivate.

It's just that......

All these beautiful fantasies were stopped by this damn code door.

The pre-human race believed in science and technology, and the development was also mechanical technology, so if the gate in front of you and the base in it were really built by the pre-humans, then if you want to crack this combination lock, you must use the knowledge of mechanical technology.

But......

In contrast to the development path of previous human beings, the creatures on Earth today have chosen biotechnology.

Even mechanical technology has only emerged in recent years.

Therefore, if you want Mu Chen and Song Qi to use their knowledge of mechanical technology to crack this password lock, it is better to directly ask Mu Chen and Song Qi to give up a treasure.

Especially for Mu Chen, a person who has lost his memory for a few years, but now he doesn't know much about the whole world, let alone the knowledge of mechanical technology.

But......

Now that they have come to this space, if they really ask Mu Chen and Song Qi to give up a treasure behind the door, Mu Chen and Song Qi will definitely not agree.

But what exactly should be done, Mu Chen and Song Qi still don't have the slightest solution.

"How can there be such a thing as a combination lock, and this doesn't seem to be a combination lock, the key is that the treasure in it is still connected to this wooden door through a specific relationship, and it can't be forcibly intervened at all.

Moreover, not only the wooden door, but also the walls around the space inside seem to have a specific relationship connecting the crystal-like objects on the platform in it, and it is simply impossible to intervene by force.

It's just a simple, ordinary life crystal, is it really so hidden that this former human being?

Although I really want to get this treasure......"

He almost scratched a hole in his head, looking at the wooden door in front of him that he had no way to do with it, and this incomparably complicated thing that didn't look like a combination lock, Song Qi felt that his mentality was about to be collapsed by these things.

It's not that he hasn't encountered any treasures before, it's just that Song Qi feels that these are more suitable for Mu Chen, but he didn't let himself absorb them.

It's not that Song Qi is overly humble, like Mu Chen, how does Song Ju not want to let these treasures play their greatest value?

The bloodline of the Chaos Dragon itself symbolizes the harmony of yin and yang.

Mu Chen, who has such a bloodline, is naturally very suitable for the holy fire and ice crystals, which is why Song Qi has such a strong request, and Mu Chen absorbs these two.

However, all the treasures were absorbed by Mu Chen, was Song Qi really not panicked?

How could Song Qi not panic?

The most fundamental purpose of coming to this ocean blue hole is to improve one's strength.

And if you want to improve your strength, absorbing these treasures is undoubtedly a very good choice.

How did Song Qi not want to let himself absorb a treasure, but he really didn't meet a treasure that matched him.

Right now, it was not easy to find a crystal containing such a huge amount of life energy, even with such a perverted combination lock block, how could Song Qi be willing to give up like this?

Song Qi didn't want to, and Mu Chen naturally didn't want to.

The two treasures found earlier, Song Qi was humble to himself, and it has been a long time since he came to this ocean blue hole, but so far, Song Qi has not been able to absorb a decent treasure in the real sense. Why was Mu Chen happy to see such a situation?

Whether it is the holy fire or the ice crystal, Song Qi humbly conceded it to Mu Chen because these two are more compatible with Mu Chen, and now, this crystal containing such a wealth of life energy is more suitable for Song Qi anyway.

Therefore, perhaps Mu Chen's desire to get this life crystal is even stronger than Song Qi's.

"Roar~"

Scratching their ears and cheeks, the stronger Mu Chen and Song Qi's desire to get this life crystal, the more unstable their minds will be, and their state of mind will naturally not be calm.

The mood will not be calm, Mu Chen and Song Qi naturally can't figure out how to crack this combination lock.

Looking at the password lock in front of him helplessly, Mu Chen deeply realized what it means to use a book, but just as Mu Chen and Song Qi were still concentrating on finding a way to unlock this password lock, behind them, they got an unkind gaze, but they suddenly opened their eyes......

"Little Aki ......"

Although he doesn't know anything about mechanical technology, but for other reactions, Mu Chen can be said to have reached the extreme.

When the unkind gaze on the grassland appeared, Mu Chen had already noticed it.