Although there are no digging tools, several of them are abysses, and they can easily dig up soil with their demonized claws. To Dudian's surprise, in addition to his strong attack ability, Zahit's magic mark is also very good at drilling soil, like a loach in just ten minutes, he dug to a depth of 100 meters and touched the rock layer deep in the deepest soil layer in this area.

"There is iron in these stones, but it has rusted, and it should have been used by people in the last period to cast buildings and fix them." Jason said as he scooped out the concrete block of the foundation, looked at it for a moment, and said.

"The people of the last period were still very wise, and they felt even smarter than us." Zasit, who was deep underground, replied with emotion, lest Jason be embarrassed to talk to himself alone.

Du Dian frowned and said: "We have to move quickly, we are not sure if there is iron ore in this area, if not, we will have to change places." ”

When Jason heard this, he stopped chatting and followed Zasit to help him carry the soil.

A few hours later, the three of them worked together to dig a deep well with a depth of four or five hundred meters, and from the deepest rock formations, some impurities of iron ore and inferior copper ore, some other elements of minerals, and even a very small gold mine were mined.

Although the output is low, many times worse than that of some large mining areas rich in minerals, it is barely enough for Dudian.

He asked Zasit and Jason to continue mining the ore, and he dug a pit more than 20 meters deep in another place, and used the ordinary stone mined to build a wall around the pit to make an underground furnace.

When Jason returned to the surface with dirt, he saw Dudian busy in the pit and asked curiously, "What is this?" ”

"Refining iron ore."

"Do you know how to refine?"

"Why else would you be looking for iron mines?"

"Uh......"

Jason was choked by Du Dian and couldn't speak, and smiled slightly bitterly, but he was not angry, he knew a little about Du Dian along the way, and he didn't care, he laughed and said, "That's what you said, do you need my help?" ”

"Can you make a stone pot out of stone?" Dudian asked.

Jason thought for a moment and said, "It should be possible......

"Then you go find firewood and come back, the more the better." Dudian said.

Jason coughed helplessly, glanced around the plains, and scrept toward the woods to the south.

After Dudian had built the underground furnace and sealed all the holes around him, he looked at Zasit and Jason, who were sitting on the sidelines resting and watching him, and commanded, "You come to light the fire, you come to wash the mine." ”

Zasit looked at him curiously, "You've smelted iron ore before?" ”

"Nope."

"And how do you know?"

"I'm smart."

“……”

The brief conversation ended again, and Zasit honestly jumped down, picked up the firewood Jason had retrieved and threw it to the bottom of the furnace to light it. Seeing that he had stuffed the bottom of the stove made of stones with firewood, the flame was extremely weak, Du Dian shook his eyebrows slightly, "You can't make a fire?" ”

Zasit was stunned, "Isn't this already on fire?" ”

"The fire is too small."

"But the firewood is already stuffed."

"It's all stuffed with firewood, so how can there be room for a flame to burn?"

Zasit was stunned, and reacted, although he had not done these jobs, as soon as Dudian said that he understood, he immediately picked up half of the firewood inside, and the flame grew larger.

Zasit was a little surprised, then shook his head and smiled bitterly, "I didn't expect that there are so many doorways for these simple things." ”

Jason on the other side looked at the various minerals piled up next to him, scratched his head and said, "Do you still need to wash this iron mine, but there is not so much water here......

Du Dian shook his head slightly, "I'll wash it, you just need to classify the minerals." ”

Jason coughed lightly, "This, how to classify it?" ”

Dudian was silent, bowed his head and picked it up, separating iron ore from copper ore, as well as other mines such as coal mines and oil sands.

Jason observed Dudian's classification, and soon learned and did as he pleased, and then he watched Dudian rub the stone sticky on the surface of the iron ore and the raised granular sand.

"This is mine washing?" Jason was stunned.

Du Dian said slowly: "It is to simply clean up the iron ore, so as not to contain other trace mineral elements into it, and then it will be more troublesome when refining." ”

Jason understood, and cleaned up the iron ore as he could.

Dudian waited for the temperature in the underground furnace to be almost up, threw the cleaned iron ore into it, and then covered it with a huge stone cover, allowing Zasit to continue the fire.

When there was not much firewood, Jason took the initiative to collect firewood.

Dudian used the remaining stones to build a wall next to it, and when Zasit saw that Dudian had built a wall to surround the surroundings, he asked, "These stones can't stop the monsters' attacks, why don't you dig some harder granite?" ”

Dudian glanced at him, "It's rain." ”

Zasit was stunned for a moment, suddenly turned off his voice, honestly added firewood, and decided not to take the initiative to talk to Dudian again.

Just as Dudian had just finished building the wall, he suddenly saw Zasit's figure turn back, not having firewood in his hand, but holding a ...... Figure?

Du Di'an's pupils shrank, and he immediately stared.

Soon, he realized that Jason was indeed holding a human in his hand, but it was a walking corpse infected with the virus.

Jason rushed all the way over, ran to Dudian, and threw the female walking corpse in his hand on the ground, looking more than twenty years old from the front, but his mouth was cracked, his fangs were completely exposed, and he was about the length of a finger, so that his entire lips could not be closed, extremely hideous, and his face was pulled and distorted, and his eyes were red and irrational, and only cruelty remained.

Zasit noticed the walking corpse here, and quickly jumped up, and said in surprise: "Walking corpse? This, there are walking corpses here too? ”

Du Dian immediately said: "You go to the fire first, once the temperature drops, it will be difficult to raise it again." ”

Zasit glanced at him, then turned back to the underground furnace and continued to burn the fire.

Dudian squatted down to inspect the corpse's clothes, which had long been tattered, stained with dried brown blood, torn, and the twin peaks on his chest were exposed, but his skin was wrinkled, and he had been exposed all year round, and he had already sunned as black as an African, but this woman was not an African, but an Asian.

Du Dian carefully identified it for a moment before he recognized that this style of clothing was the clothing of the old era, and the expectation in his heart suddenly fell again, and said to Jason: "It is the walking corpse of the last era, it is estimated that this land is the same as the land in the God of War Wall, full of monsters and walking corpses, as well as the fire dragon alien race." ”

"When I attacked the God of War Wall before, I found that those fire dragon alien races seemed to be able to command monsters, could they be the masters of this land?" Jason asked.