The protagonist and his legion are already planning to return to their homeland for the winter while building an ant nest on the hill of Roundbread, now renamed [Round City].

As autumn intensifies, the mountain swamps cool down faster than the plains, and there is already an atmosphere of approaching early winter.

The protagonist already feels that he can't delay any longer and must go back as soon as possible, otherwise he will be trapped in this swamp for the winter once the waters are frozen.

Now, the territory of the Divine Envoy King's Legion is likely to face the invasion of mysterious ants on the north bank of the Great River in winter, and this new opponent has shown its terrifying attack and aggression. The protagonist really can't rest assured of the safety of his homeland, and he must rush back to the town.

According to the report of the flying knights, in the past half a month, the mysterious ant army and the paving ant barbarian country that has re-established the main nest have been fighting in the new main nest of the paving ants, that is, the original eastern nest.

Although the Paving Ant Barbarian Army has regained its strength, the strength of the army still exists, and it has a new ruling center, there has been no collapse of defeat, and the resistance is extremely tenacious.

But for now, the Paving Ant Barbarian Army is still unable to defeat the Mysterious Ants. In the repeated battles, the paving ant barbarian army suffered heavy losses and gradually declined, if it were not for the new main nest, there was also a geographical advantage to borrow, and a steady stream of new forces from all over the country also continued to gather, but I am afraid that it has already been defeated.

Not long ago, another army of mysterious ants suddenly reappeared from the direction of the original main nest of the paving ant barbarians, although the paving ant barbarian army in this area briefly recovered the original main nest, but did not arrange heavy guards in this area, nor did they try to rebuild the old main nest.

The army of the mysterious ants soon captured dozens of empty side nests.

Even more fatal for the Paving Ant Barbarian Army, this Paving Ant Barbarian Army cut off the communication line for a large part of the western territory of the Paving Ant Barbarian to support the new main nest, so that the area in the central and western part of the barbarian country, which accounted for three-quarters of the total territory, lost contact with the new main nest.

In other words, the main force of the Paving Ant Barbarian Army has been encircled in the area of the new main nest, and only more than thirty nests near the new main nest can be directly controlled and commanded, which is only about a quarter of the size of the current actual territory.

The protagonist is now very unoptimistic about the prospects of the Paving Ant Barbarian Country, even if the Paving Ant Barbarian Army can hold out until winter without reinforcements and supplies, the mysterious ants have stronger winter combat capabilities than the Paving Ant Warriors. The Paving Ant Barbarian Army is bound to have a very difficult time this winter.

On the other side, the army of the King's Council faction, which had stolen a lot of technical tactics from the Divine Envoy King's legion, also fought fiercely with the Mysterious Ant's side division in the [Bridgehead], and finally repelled the attack of the Mysterious Ant after paying a lot of price.

But this is only because the main force of the mysterious ants is attracted by the paving ant barbarian country, and the troops attacking the faction of the Great King's Council are only a few thousand mysterious ants.

Once the Paving Ant Barbarian Kingdom is completely defeated, with the current military strength and war potential of the Great King's Council faction, it will not even be able to stop the mysterious ants for a week.

The protagonist ponders worriedly about the situation on the north bank of the Great River. The world is changing too fast, and just last year, the protagonist thought the most about how to cross the river to the north, defeat the huge paving ant barbarian country, and establish the hegemony of the Divine Envoy King Legion over the basin on both sides of the river.

Moreover, whenever I think of the huge size of the Paving Ant Barbarian Country, even the protagonist is not confident that he can complete this achievement in two or three years.

But now, in just one year, the situation on the north bank of the Great River has changed suddenly, and the mysterious ant forces from outside have quickly suppressed the old overlord Paving Ant Barbarian State with an invincible attitude.

This is bound to be a very formidable and tricky enemy, and it is also a challenge that the Divine Envoy King Legion will have to face sooner or later.

- I'm the dividing line -

While the protagonist's thoughts are wandering, a herald comes to report that he has found something strange in the [Circular City], and asks the god to make the king move to take a look.

The protagonist reads the packet of messages brought by the herald, and when he looks at it, he really finds something amazing!!

The stranger was discovered by a male ant, who was the squad commander under Rambovan, who was relatively old and hopeful of becoming the new legion commander in the next expansion.

When he led his soldiers to dig the nest of the huge farm in the ant nest, he dug up a "rock formation", and on the rock that has not yet fully exposed the whole, there are some strange regular depictions, which do not seem to be naturally formed.

If it was just a simple portrayal, the ants didn't care, but the male ant commander found that he had seen a similar figure in the great Messenger King's dormitory, and immediately sent a herald to report to the Messenger King.

The protagonist sees this figure in the information packet: a simple pattern of right-angled triangles.

Right triangles are just that, nature sometimes naturally forms some geometric figures, whether it is a square, a rectangle, a triangle, a circle, a hexagon, there are natural shapes or patterns.

However, in this right triangle, the shorter right side is divided into three by two short bars, the longer right side has three short bars, and the hypotenuse has four short bars.

Anyone who has studied basic geometry will immediately be able to tell that this figure represents a very basic and classic geometric theorem - the Pythagorean theorem.

The Pythagorean theorem states that the sum of the squares of the two right-angled sides of a right-angled triangle is equal to the square of the hypotenuse. In ancient China, the right triangle was called the Pythagorean shape, and the smaller of the right angles was the hook, the other long right angle side was the strand, and the hypotenuse was the chord, so this theorem was called the Pythagorean theorem, and some people called the Shang Gao theorem. In the West, it is called the Pythagorean theorem.

What does this mean? This image is definitely not natural, it is clearly artificially depicted? Who portrayed this figure? Is there a civilization in the world that understands the mathematical knowledge of the Pythagorean theorem? Why is this pattern in the nest of parasitic ants again?

The protagonist feels trembling all over, as if he has been electrocuted, and a sense of urgency to discover incredible mysteries and clues urges him to hurry to the scene.

There are not only figures of the Pythagorean theorem, but there are also traces of some figures around, but most of them are still buried in the dirt, so you can't see it realistically.

The protagonist immediately asks all the Divine Envoy King warriors to stop what they are doing and dig up the "rock" in front of them with all their might.

As the excavation deepens a little bit, the true face of the mysterious rock in this mysterious lair gradually emerges, and when more and more content is revealed in front of the protagonist, the protagonist is almost shocked to the point of fainting!