After becoming a high-level alchemist, Hathaway also began to enchant those dragon skin armors, and it took a long time to enchant all the more than thirty dragon skin armors.

The construction of Zhenbei City is progressing in an orderly manner, the ice and snow continue to melt, many hibernating animals are also dispatched, the cold wind dissipates, and all signs indicate that spring is coming.

The centaur tribe came to Zhenbei City again to buy food, and the battle between them and the orc tribe was temporarily stopped, and both sides had reached the point of exhaustion, but the loss of the orc tribe should be greater, after all, they ran out of food.

The orc tribe temporarily retreated, and the centaur tribe did not pursue, after all, the centaur tribe was not having a good time, this time when they came to Zhenbei City, Su Lun once again traded a batch of food and weapons with them, and Su Lun exchanged for five hundred horses. Now the horses in Zhenbei City can be completely done, and all soldiers have one horse per person, and there is still a surplus.

The blacksmith shop has been very busy during this time, after all, the demand for armor weapons of the troops in the territory is not small, and the blacksmith shop consumes a lot of iron materials every day, but fortunately, there is iron ore in the territory.

Su Lun is ready to change the pikemen into the city's full-body iron armor, and the barbarians also need to change the full-body iron armor, although the blacksmith shop in Zhenbei City can make plate armor, but the steel output used in plate armor is not high, although after Su Lun's several improvements, the blacksmith shop has produced a lot of steel, but steel is more used to make weapons.

Back at the castle, Angela and Anne stepped forward to greet her, Angela helped Suren untie her cloak and hang it on a hanger next to her, while Annie took out a towel to help Suren scrub her face.

After some cleaning, Suren stretched his waist, and then collapsed directly on the sofa. Cultivating farmland is fundamental to the development of the territory, so Su Lun was very busy during this time, and he was patrolling and guiding all day long, after all, there were too few people with high cultivation skills in his hands, and many times he could only do it himself.

Angela and Anne came to Su Lun's side obediently, one massaged his shoulder, the other hammered his leg, the massage skills of the two were still a little jerky, but they were beautiful and delicious.

Just when Suren couldn't help but want to taste the dessert, a guard came to report.

"My lord, there is an emergency. ”

"What's wrong?" Su Lun put his face on the little maid's elastic thighs.

"The iron mine found a hole in the ground, and when the kobold first dug it, some undead skeletons appeared in it, and the tunnel seemed to connect to the underground world. ”

"The underworld?" Su Lun opened his eyes and looked at the guard, "Are you sure it's the underworld?"

"I'm sorry, my lord, because the soldiers didn't go too deep, and it's not clear if it's the Underworld..."

Su Lun nodded and didn't speak again, there is very little connection between the underground world and the ground, and it usually appears in the mining area. Many people think that the underground world is full of magma, darkness, and crampedness, but in fact, the underground world is very large.

Most planets have faults underground, not completely solid, and the scale of the underground world varies from the largest to the size of a kingdom, and the smallest may be some passages and caves.

The Drow Elves are currently dominant in the Underworld, along with many other species such as Grey Dwarves, MONOCULUS, Minotaurs, Cavemen, and more.

The races that live in the underworld are no less than those on the surface, and the underworld is far more dangerous than the surface world.

A passage to the underground world appeared in the territory, which made Su Lun pay attention, and he needed to find out if this underground world was a threat to the territory.

Suren sent someone to call Ayton, as a drow elf, Ayton is very familiar with the underground world, Suren is ready to take Ayton into the underground world to explore.

The passage discovered at the iron ore mine is located deep in the iron mine, and Suren enters the mine under the guidance of kobold miners. Torches are inserted in the tunnels of the mines, and because of the size of the kobolds, the mines are relatively small. Many times Suren needs to bend down to pass.

There are also simple mining tracks, but the ore is pulled out by hand. There are torches every ten meters or so along the way, but there are no torches about two hundred meters deep into the mining area. The surroundings gradually became dark, and a series of mine tunnels in all directions appeared in front of me.

This iron mine in Zhenbei City has been mined for a long time before Su Lun came, originally it was an open-pit iron mine, but after a long time of mining, the quality of the upper iron ore became worse and worse, so it could only be mined downward.

Led by the kobolds, Suren and Ayton came to the vicinity of a cave and opened the strategic map, on which all the places he passed appeared, and the entire map was still very blank, and some places were marked with a lot of data.

Walking down from the hole in front of him, he has already entered the underground world, Suren took a brief observation, and then took Ayton into it. The cave was dark, but luckily both Suren and Ayton had night vision, and their vision was not affected in this dark environment.

The passage is very long, the two of them have walked for more than ten minutes without any change, the passage looks like there are traces of artificial modification, but the technique is very rough.

"Squeak!"

Just then, there was some strange noise nearby.

Then in the dark corner, some rats larger than cats came out, and they were not much different from the common mice, with protruding sharp fangs, sharp claws, and slightly red eyes.

"Species: Mutant Demon Rat

Grade: 4

Skills: Bites, Diseases, Claws. ”

After seeing those mice, Su Lun was also surprised, these mice were actually bigger than cats. And at this moment, there was a sparse sound in the passage in front of him. Immediately after that, Su Lun and the others saw that hundreds of mutant demon rats were rapidly approaching in the depths of the passage.

"That's not a lot of rats!" After seeing the scale of the mutant demon rat clearly, Su Lun secretly smacked his tongue. If such a group of mutant rats suddenly run out, it will definitely be a big trouble for those kobolds, from the system panel, those mutant demon rats are not strong, the only problem is the virus they carry, you must know that the plague is very terrifying.

A large number of rats rushed forward to attack after seeing Su Lun and the two. There were dozens of mice in front of him, and Su Lun, who was looking at it, only felt that his scalp was numb.

Sonorous.

Suren drew his sword, the space in the passage was too small for a spear. The strength of the mutant demon rat is similar to that of ordinary people, its strength is close to that of a wild cat, and its speed is relatively fast, and if you are careful, ordinary adult men can also deal with it. But there are too many of them.

"Be careful, these rats have viruses on them, and if you bite them, you will likely get plague. Suren moved his wrist and said to Ayton next to him.