In the forest near the rocky highlands, Wildtalon has built a Tier 1 fortress city here. On the one hand, it is to defend against underground troops that may come out of the rocky plateau, and on the other hand, it is to use it as a base to explore underground tunnels.

After a long period of exploration, the scouts discovered traces of the Underground City, and a safer route from the Rocky Heights to the Underground City.

Although there are many entrances to the tunnels that enter the underground from the rocky heights, they are very narrow. The deeper you go, the wider the passage becomes, enough for large troops to march and fight.

The number of troops in the forest was large, and Yuan Mu, Leo, and Ursol entered separately through different tunnel entrances, and then joined up when they reached the underground. There are not many enemies in this section, and it is very safe, not to mention the sentry stronghold established by the bears underground.

Yuan Mu entered the tunnel again, the tunnel was originally dark and damp, but now there were glowing plants planted by the bears on the walls, the traps on the ground were marked by the bearmen, and the dark troops in the field were also cleaned up by the Wild Claw City troops.

"It's a really annoying environment, I hope those underground bed bugs don't run away, I don't want to stay underground for too long."

Tausno complained a few words, he had been here last time.

"As long as they find their city, even if they run away, they won't be much of a threat."

After the discussion at the Wild Claw City Hall, everyone still had some disagreements.

Some heroes believe that all underground cities seen should be destroyed directly by means of thunder.

Other heroes feel that they should try to subdue the underground cities first, sign a pact, and manage all the underground forces to stop attacking the forest.

These heroes think that the underground is complicated and that it will take a lot of time for the forest troops to find out all the cities. If it is not cleaned up, it will be a long battle in the future.

Moreover, there are more underground cities destroyed, and some originally neutral or wild forces will also be involved.

Yuan Mu didn't support either side, and the specific situation would have to see those underground cities. However, he felt that the chances of reconciliation were still very small, and the underground troops that appeared in the forest were very aggressive.

Delia looked around and was a little uneasy: "My lord, is this underground world full of this kind of tunnels?" ”

"There are a lot of places that are." Yuan Mu knew what Di Liya was worried about, these tunnels were not ordinary underground passages, they were built artificially. It is unimaginable to build so many tunnels in such a large underground world.

"These tunnels are remnants of ancient forces. According to the analysis of the troops that appeared in the forest, the highest level of the dark city was only level 3. The Infernal forces are of similar rank, but there are many fewer of them. ”

Delia let go of her worries, but Yuan Mu thought of one thing, and turned around and asked Feige, who came with him? Brownneck: "Do you remember where the ruins of that purgatory-type city were?" ”

Feige nodded, "My lord, I remember, there is still some distance from here. ”

It was in the underground tunnels that Lange discovered the ruins of a purgatory city, and only after receiving the mission did he go to the Demon Gate in the Silt Swamp to offer sacrifices, and Feige had also been there.

"Then let's go there and have a look."

The speed of the march was not fast, and on the way, two more sentry posts set up by the bear people were found, and Yuan Mu reported the latest situation in the vicinity. After walking a little further, the underground tunnels were much wider, until they came to an underground cavern where the bears had set up a camp.

Yuan Mu asked the troops to rest here, and so many troops made this small cave a little crowded. The bears stationed in the bear gave a map of Yuan Mu's vicinity, pointing out the location of a large camp deeper, and Yuan Mu's troops would meet up with Ursol and Leo in that large camp.

In addition to the large camp, the map also marked the buildings in the wild, the location of powerful field troops that had not been cleared, and unexplored areas.

After all, the bear people are not suitable for underground exploration, their main goal is to find the underground city, so they have been exploring downward, and there are still many places in the four directions that have not been explored clearly.

This is also the task of the forest expeditionary troops, to go to the underground city while leaving a part of the troops to guard the important intersections passing through to ensure the safety of the rear.

After resting, Yuan Mu sent more assassins to the front to detect the trap, and the ghost crow scouts were also released. The path from behind is not as clear as the exploration of the bear people, and the Eye of Grulock is not easy to use underground, so Yuan Mu needs to be careful himself.

Yuan Mu took a detour and headed to the ruins of the purgatory city that Fei Ge pointed to. This location was not marked on the map, and when Yuan Mu approached, he realized that it was not that the bear man had not explored this place, but that this place did not seem to be a passage.

The road ahead is blocked, and it's like the end of this underpass.

Yuan Mu looked at Feige, and Feige was also puzzled.

"I should be right in my memory, there are the ruins of the Purgatory City in front of us, and we entered through this passage at that time."

"That's when someone blocked it up and disguised it as natural, and I was eager to see what's in the back."

If it is not a natural occurrence, it should be relatively easy to clean up. Yuan Mu called out the bear troops, they had rough skin and thick flesh, and they could do this job.

The barricade in front of it was easy to loosen, and the large bear kept pulling with its paws and slowly pushed inside. It's a long roadblock, and if Fig weren't sure it was here, it would be hard to spot.

"Bang!"

A flame-clawed bear's massive claws gripped into the air, revealing a hole in front of it, and the barricades were cleared. But before the troops could enter, a small monster appeared on the other side of the hollow to look this way, and then a loud alarm came from inside.

"There's a demon army inside, rush in!" Yuan Mu immediately gave the order.

The bears in front of them no longer held back, and roared angrily, and the only remaining barrier was torn down, revealing a huge space inside. The troops rushed in one after another, and soon the sound of battle was heard inside.

Yuan Mu followed the troops into this cave, and saw the ruins of the city in the middle at a glance.

The ruins were large enough to occupy the cave almost completely, and there were buildings that did not completely collapse, and the corpses of the creatures hanging on them had long since dried up. Many places are inky black, the color that has condensed over a long period of time after being painted with a large amount of blood.

This purgatory-type city was at least level 4 before it was destroyed, but it was destroyed for too long, and many underground plants grew in the ruins.

But now, there are new inhabitants in the ruins, and a force of the Purgatory system is gathering. This purgatory-type unit has 3 squadrons, which are very low-level, and some are not combat units.

They originally wanted to come to fight Yuan Mu's troops, but when they found that Yuan Mu's troops were entering the cave in a steady stream, they immediately began to flee. The Flower Demon Bear cavalry and Tausno's forces pursued them into another passage.

Asking Tao Snow not to chase too far, Yuan Mu asked his subordinates to explore the ruins, and followed Feige to the place where Lange received the task.

Passing by was littered with skulls and corpses, some of which were human. Yuan Mu knew that this city was a city where humans and demons mixed together, and these humans were good at summoning demons and were the forces of the purgatory.

Feige took Yuan Mu to a building that had not collapsed, which was a sacrificial pool. In addition to the large number of bones that were about to turn to stone, there were also some fresh creature corpses that seemed to have been killed in the sacrificial pool recently.

"Can it still be used here?" Yuan Mu was surprised, in addition to the fresh corpses, the area around the sacrificial pool had also been cleaned.

Fei Ge was also surprised: "The last time I came, it couldn't be used here, and it has long since decayed. We get an item on a skeleton next to the sacrificial pool, and we're tasked with going to the Demon Gate in the Muddy Swamp to sacrifice with a special item. ”

Sacrifice requires a special recipe to get what you need, Yuan Mu checked it again, but he got a few recipes, all of which were to kill some creatures and the like.

Not all sacrifices have to kill creatures, and some altars can just submit the items they need, and this demonic style is really not easy to get used to.

Yuan Mu didn't prepare to sacrifice either, and continued to observe carefully. At this time, his subordinates suddenly reported: "My lord, there are several purgatory-type class buildings in the ruins. ”

After confirming the news of his subordinates, Yuan Mu was even more puzzled, this place has long been decayed.

Fei Ge also said, "My lord, we took a closer look at this ruin last time, and we didn't find any class buildings. ”

"It seems that these Infernal forces are using some methods to make decayed buildings work again, let's go see what they do."

Leaving the sacrificial pool, Yuan Mu came to several class buildings. The buildings were all uncollapsed, and the camp of the escaped Purgatory troops was set up nearby, with some items in the camp.

There are two kennels to recruit Cerberus and Hellhounds, a Demon Gate to recruit Horned Demons, and a high-level Yellow Springs Devil's Den to recruit Level 5 Demon Kings!

The yield is a bit higher than in the wilderness, but not as high as in the city.

"These types of troops have appeared in the silt swamps, and it turns out that the ruins of the city are also one of the sources of purgatory forces."

"My lord, what to do with them?" Delia asked.

"Occupy it, these classes are not bad, especially the Demon King. Leave some troops here to guard it, and watch out for the purgatory troops coming back. ”

His men continued to explore the ruins, but found nothing more valuable, and Tausno returned with his troops.

"They are very familiar with this place, and after I eliminated some of them, I didn't dare to chase too far, so I came back."

"Be careful, the strength of the Purgatory Force may be stronger than expected, let's go and join Leo and Usor. Tell them about this place, and about the sacrificial pool. ”