Only by understanding the rules of the First Emperor's Underground Palace can he correctly and reasonably arrange the next things, therefore, the rules in this are very important to Tang Mu, and the fifth-order evolutionary in front of him is one of the few existences who fully know the rules of the First Emperor's Underground Palace, otherwise he would not have become the guide of the vanguard this time.

And Hong Huangling took over the development of the First Emperor's underground palace, although the time is still short, it is impossible not to find out the rules at all.

"The number of these skeletons is related to the number of people who enter here, and the strength of the skeletons is related to the nodes.

Among them, every time you pass through a hundred nodes, the strength of the skeleton will increase by a small level, the grade of the skeleton of the first node is the peak of the fifth order, the skeleton level of the hundredth node is the first level of the sixth order, the second hundredth node, the strength of the skeleton is the second level of the sixth order, and so on......"

These five evolutionary words let Tang Mu know why the development of the First Emperor's Underground Palace was so difficult, and the hundredth node was the sixth order, that is, the sage-level skeleton.

The sea of skeletons composed of Sage-level skeletons is absolutely terrifying, and it is already very remarkable that the Flood Desolation Territory can withstand the attacks of these Sage-level skeletons and advance the strategy to two hundred nodes.

Moreover, these rules are only initially explored by the Honghuang Territory, and there may be other rules that are also possible, and even Tang Mu feels that these may be very big.

"And this First Emperor Underground Palace seems to be still growing, and the skeleton strength refreshed inside is still increasing, last year, when our Honghuang Territory received here, the skeleton strength refreshed by the first node was only the level of the fifth order and the sixth level, but in less than a year, the initial skeleton strength here has reached the peak of the fifth order."

The words of the fifth-order evolutionary warrior immediately let Tang Mu know that the idea of treating the First Emperor's Underground Palace as a copy of resources and constantly producing resources was not realistic, if he couldn't completely attack the Secret Realm of the First Emperor's Underground Palace, then with the continuous growth of the Secret Realm of the First Emperor's Underground Palace, the First Emperor's Underground Palace would sooner or later grow to the point that even Tang Mu could not enter.

"Kill!"

Initially understanding some of the rules of the First Emperor's Underground Palace, Tang Mu immediately commanded three thousand evolutionary warriors to kill towards that group of skeletons, with the strength and cooperation of these evolutionary warriors, there was no accident, these skeletons were directly crushed and killed by them.

"Now split into four parts, leave one part here to take out the newly refreshed skeletons, and the rest split into three teams and explore towards the three corridors."

Tang Mu put away the various loot dropped by the group of skeletons, ordered the three thousand warriors behind him, and began to divide these warriors into four teams equally, except for those who remained, the others went to explore the other three corridors.

There is also a rule on the first floor of the First Emperor's Underground Palace, that is, every time you enter, the corridor is different.

For example, this time, when Tang Mu and the others entered, they couldn't think that the passage corridor last time was the correct path according to the previous strategy, but the passage corridor last time was more likely to be a dead end.

Therefore, whether this passage corridor is smooth or not, needs to be re-explored, which is also another difficulty in the development of the first layer of the First Emperor's Underground Palace, unless this first layer is cleared in one go, it is likely that once they leave the Imperial Underground Palace, the next time they enter, these passage corridors will change again.

This is also the reason why Tang Mu let these evolutionary warrior detachments explore, and Tang Mu himself stayed at this node, waiting for the three teams of evolutionary warriors sent to explore the correct path before continuing to move forward.

I don't know how long I waited, but finally, this node was refreshed again, and this time there were only seven hundred and fifty warriors left, and it was also very stressful to deal with more than three thousand skeletons.

Fortunately, there is Tang Mu's existence here, Tang Mu directly unfolded the realm world projection, and immediately suppressed the strength of these skeletons, so that these evolutionary warriors cooperated with Tang Mu and quickly harvested these skeletons.

"The best?"

At this time, when Tang Mu was collecting the loot, he found that this time he cleaned up the skeleton and actually dropped a treasure that seemed to be very high-grade.

"Skeleton Crown Fragments: Collect a thousand Skeleton Crown Fragments to synthesize the Chaos Arcana Skull Crown, which is the Chaos Arcana that controls death and life."

Getting the information of this treasure, Tang Mu was suddenly a little excited, Chaos Treasure, this is definitely an unexpected surprise, just on the periphery, you can get so many treasures, so inside, wouldn't it be even better.

It was this kind of thinking that made Tang Mu even more imperative to attack the First Emperor's Underground Palace.

It didn't take long for him to get a Chaos Treasure Fragment, which shows that there are definitely a lot of treasures in the First Emperor's Underground Palace, and there is no problem in raising the remaining treasures that let him open up the world of the Heavens Summoning Treasure Book Pages.

Thinking of this, even with Tang Mu's calm state of mind now, he was still in a flurry and a little excited.

However, although he was excited, Tang Mu still understood very rationally that the development of the First Emperor's Underground Palace was not so easy, the first node, the refreshed skeleton strength was the peak of the fifth order, and the hundredth node, the refreshed skeleton strength was the sixth order level.

And the hundredth node, the refreshed skeleton strength, is the sixth-order second-level ,...... And so on, in the end, it is not known to what extent the strength of the refreshed skeletons will reach, and when the time comes, it is possible that even the strength of these skeletons will exceed his strength.

Therefore, although Tang Mu was happy, he was not carried away by the huge benefits in front of him, but became more cautious.

Fortunately, the skeletons of each node are independent, and they cannot be refreshed and accumulated until they are killed, otherwise, the skeletons in the back will continue to be refreshed and accumulated, not to mention a sixth-order peak powerhouse like him Tang Mu, even if he is an eighth-order powerhouse like his main god clone, it is difficult to attack this First Emperor's underground palace.

At this time, Tang Mu could only be glad that this First Emperor Underground Palace did not generate that kind of rule, otherwise the First Emperor Underground Palace would not have been successfully developed at all.

"That's probably the limit of the balance rule."

Tang Mu knew that this situation would only occur if the balance rules were restricted, otherwise the First Emperor's Underground Palace would have been invincible a long time ago.

But even if there is a restriction of the rules of balance, the underground palace of the First Emperor, in Tang Mu's view, is still one of the secret realms of the first site of the earth after the end of the world, the reason why it is only said is that it is one of them, but before the end of the world, the miracle buildings of the earth are not only the mausoleum of the first emperor, but also other miracle buildings.

And the secret realm of the ruins transformed by the miracle building after the end of the world is basically so powerful.