"If I'm not mistaken, the way to light up that starry sky map should be to kill the creatures in the cave.

And collect the phantoms of the creatures that I killed, and finally transport them into the starry sky map to light up the light spots on the starry sky map.”

Chen Yiming looked up at the starry sky map on his head, and frowned again.

"So the question is, can this starry sky map be taken away?"

This is indeed a problem.

If this starry sky map cannot be taken away.

So, if you want to light up the starry sky map, you can only return to the seventh floor of this tower after killing the creatures in the cave.

Then the phantom of the creatures in the cave were transported into the starry sky map.

Among them,

There is a problem that needs to be solved.

That is,

This tower exists in this underground palace.

The underground palace also stands in this underground cave.

According to the basic rules of the cave:

After leaving one cave and going to another cave, you cannot "turn back".

That is to say,

If Chen Yiming goes from this cave to the next cave, then he will not be able to return to this cave.

If you cannot return to this underground cave, you will naturally not be able to return to the underground palace.

And if you don’t leave this cave, you won’t encounter any underground cave creatures that can be killed.

If this problem cannot be solved, it is undoubtedly a difficult goal for Chen Yiming to light up the starry sky map.

Chen Yiming thought carefully for a while, but he still had no idea how to "get back after leaving a cave."

Although the special ability of his eyes can penetrate the barriers between each cave and see the specific scenes in each cave in other directions.

but,

Chen Yiming had tried it before.

Each cave is an independent cave.

Independence means that there is no connection with a cave.

That is to say,

After going to the next cave.

You dig in six directions,

They will never return to the original cave.

Chen Yiming frowned and thought about this.

suddenly,

Several messages popped up in his system panel.

He called out the panel, frowned and glanced at the messages:

[System tip: The underground palace has been fully explored and passed the final test of the underground palace. The current underground palace coordinates have been marked. Payment energy crystals can be transmitted from any underground cave to the underground palace.

Note: Each transmission consumes five energy crystals.

Note: Each underground palace can only be marked by one person.

Note: There is no upper limit for the same person to mark the underground palace.]

Oh, let’s go!

Chen Yiming raised his eyebrows slightly.

An unexpected look appeared slightly on his face.

This is really a pillow when you come to sleep.

but,

Is this a bit too deliberate?

I was just worried about not being able to return to the underground palace.

Next second.

I told me directly that the underground palace has been marked and can be sent back to the underground palace for a certain price.

in addition,

If those system prompts on the panel are accurate.

So,

Theoretically, the same person can mark the underground palace with an infinite number of times.

If you have this ability, it is not impossible to mark all the underground palaces that have appeared in the cave.

"What a pity, I don't know how to get to other areas at the moment, otherwise..."

Chen Yiming shook his head slightly, feeling quite regretful.

If possible, he wanted to mark the caves one by one.

after all,

So far.

Among the humans in the entire cave,

Only he used brute force to successfully break the invisible barrier in front of the underground palace.

Only he fully explored the underground palace and successfully marked the underground palace through the final test of the underground palace.

As for why he was sure that he was the only one who did these things?

That's because he saw the picture book of the underground palace he obtained after breaking the barrier and entering the underground palace.

Chen Yiming's thoughts moved.

The underground palace illustration appeared in his hands.

He looked at the underground palace in his hand intently:

[Underground Palace Picture Book: It records basic information about all underground palaces in each area.]

[Underground Palace Picture Book.

Current status: Activated.

The total number of underground palaces recorded currently: 156955.

The total number of underground palaces currently marked: 1.]

…

Perhaps it was the ultimate test of successfully passing the underground palace.

The local palace illustration in Chen Yiming's hand has also been activated.

The underground palace illustration after being activated has changed greatly from before being activated.

You can know the total number of underground palaces that exist in the underground cave, and you can also know the total number of underground palaces that have been marked.

As for the marked underground palace,

Naturally, it is the underground palace marked by Chen Yiming.

"There are 150,000 underground palaces in the entire cave?"

Chen Yiming was a little surprised.

I don't think this number is too many.

On the contrary, it was a bit unexpected that the number was a little bit short.

after all,

There are 1,500 people in one area.

The humans in the entire cave exist in the number of billions of people.

Based on 1,500 people in each area, the number of areas calculated by billions is far more than 150,000.

That is to say,

The previous guess of "there is an underground palace in every area" discussed in the [World] channel is wrong.

And the real situation is,
To be continued...