After a whole day of tossing and turning, Zhang Shi fell asleep as soon as his head hit the pillow.

The next morning, Zhang Shi woke up full of energy from his warm bed, ready to begin his fourth day in the wilderness.

Stretching, Zhang Shi leisurely opened the system panel, clicked "Sign In," and received today's reward.

The system notifies you that you have received the following rewards for checking in:

[Wilderness World VIP Membership Card (7 days x1)]

[Charcoal Kiln (Green) x1: A device used for burning charcoal. It consumes 1 unit of wood to produce 1 unit of charcoal. Exclusive technology in the Wilderness World, clean, environmentally friendly, and pollution-free. It can also be used to burn other materials.]

Zhang Shi examined the charcoal kiln in his backpack. Its main body was constructed of brick and stone, resembling an inverted hemisphere, and was about 3 meters high. There were two openings, one for feeding materials and the other for producing charcoal.

Zhang Shi placed it in the courtyard, threw in a unit of wood, and lit it. Soon after, a piece of silvery-white charcoal emerged from the outlet.

Ding! Congratulations on winning:

[Charcoal (White) x1: A resource obtained from wood processing. Compared to wood, it burns longer, has a higher calorific value, and is pollution-free, making it effective for both smelting and heating.]

After glancing at the charcoal's description, Zhang Shi's mind began to work again, and a plan started to take shape in his heart.

"One unit of charcoal is about a quarter the size of a piece of wood. I don't know how long it will burn or how much heat it will release. If possible, I could start a charcoal business."

The kiln is a hidden world inside; even with half the wood thrown in, it is not full.

Seeing that the charcoal kiln was working on its own, Zhang Shi decided to study it again when he returned in the evening.

Let's turn our attention to the exquisite-level treasure chest we obtained yesterday.

Ding! Successfully opened the exquisite treasure chest (green), triggering VIP privileges. Items doubled. Obtained:

[Mini Sentry Tower (Blue) x2: Basic defensive structure, equipped with a small searchlight, providing survivors with better visibility within the shelter area. (Searchlight batteries are replaceable)]

[Bone Bow (Blue) x2: Made from the bones and sinews of large beasts, possessing immense power. Increases damage against wild animals by 10%.]

[Iron Arrow Crafting Template (Blue) x2: After use, iron arrows can be unlocked in the building module.]

[Small Poultry Coop (Blue) x2: After use, a poultry coop can be built near the shelter. The growth rate of poultry inside the coop is increased by 20%, and the hatching rate is increased by 30%.]

200 pieces of white wood

100 white stones

The exquisite treasure chests are truly exceptional; the items they yielded this time are all things that can solve Zhang Shi's immediate problems.

First, use the VIP membership card obtained from signing in.

Feeling an aura of dominance surrounding him, Zhang Shizhi proudly took out a sentry tower and placed it next to the gate.

The sentry tower is about three stories high and is made entirely of concrete. It looks extremely sturdy and reliable, but it looks a bit crowded in the small courtyard.

Zhang Shi climbed to the top of the tower and felt that the view was indeed much wider. He took out the bone bow and practiced with it for a while. The dim light of dawn contrasted with the desolate scene around him, which filled Zhang Shi with a sense of ambition to achieve great things.

After collecting the newly produced well water into his backpack, Zhang Shi returned to the stone house, washed up, ate something simple, and then made plans for today's trip.

With the smelting furnace and two fully automated mining machines, Zhang Shi is poised to achieve mass production of pig iron, and he is determined to acquire that mine.

Anticipating a large harvest of ore and wood today, Zhang Shi tidied his backpack, carrying only essential supplies and leaving ample space for it.

As dawn broke, Zhang Shi closed the doors and windows and stepped out of the courtyard. Upon exiting, he noticed a patch of fur and bloodstains on an animal trap next to the wall. After examining it, Zhang Shi confirmed it was indeed the remains of a gray wolf.

After repositioning the animal trap, Zhang Shi stared blankly in the direction the bloodstains had disappeared. It's said that wolves are vengeful creatures; they're not afraid of thieves stealing from them, but they are afraid of thieves who have their eyes on them. He used the system to repair the wooden door, and with a heavy heart, Zhang Shi embarked on his journey.

...

Zhang Shi knew this path by heart. He pedaled hard in the direction of his goal, and after about 20 minutes, he arrived at the plum tree again.

He was not disappointed; the tree was once again laden with bright red fruit.

As usual, all the ripe fruit was harvested, and the white-quality fruit was replaced with timber. Zhang Shi wasted no time, packed up his bicycle, and headed towards the mine.

After passing through the dense forest, Zhang Shi saw the low hill again. He climbed to the halfway point without much effort, peered into one of the caves for a while, and then threw a stone inside. After a long silence, Zhang Shi cautiously entered the cave.

Carrying the oil lamp, Zhang Shi walked inside for a while, and then the space in front of him suddenly opened up. It was an open space with many holes in the opposite stone wall. Feeling gusts of air blowing around him, Zhang Shi guessed that these caves were connected.

Seeing that there was no danger around, Zhang Shi lowered his guard and used his appraisal skill on the front.

Sure enough, the entire interior of the low mountain was filled with iron ore and stone resources, and Zhang Shi even discovered some coal resources.

"I knew this game was illogical. How can iron ore and coal be mixed together?"

Zhang Shi muttered to himself, but his hands were busy. He assembled a high-quality iron pickaxe onto the mining machine and filled it with wood. The two mining machines then began to clang and bang as they mined.

Zhang Shi observed that each machine could extract about one unit of mineral resources per minute, which was quite efficient. Most importantly, with just 10 units of wood added, they could work endlessly for a whole hour.

Zhang Shi laughed out loud, already imagining a continuous stream of iron ore beckoning to him. After adding enough wood for the two mining machines to last four days, Zhang Shi turned and walked out of the mine.

With a bumper harvest of mineral resources, the timber industry couldn't be neglected either. If news of the severe cold and natural disaster spread, timber prices would definitely skyrocket. Moreover, he had a reliable means of producing charcoal, so Zhang Shi had no choice but to push himself to work harder.

Behind the low hill was a dense forest, and Zhang Shi decided to target that forest.

Holding his old Duan sword, he moved with lightning speed, his mind racing. He dreamt of soon accumulating wealth and becoming the wealthy capitalist he had once envied and resented. Zhang Shi seemed to forget his fatigue, working all day long, drinking well water when thirsty and popping a plum into his mouth when hungry.

"High-quality products are just so good. After cutting down trees for so long, they still have the capacity."

He glanced at the time; it was almost 3 PM. He had enough time to organize the 2500 units of timber. Zhang Shi planned to take one last look at the mine before heading back.

Back in the mine, two mining machines had already excavated a shallow pit in one area. Zhang Shi gathered up the various types of ore piled up to the side.

Ding! Congratulations on winning:

【Stone (White) x75】

Iron Ore (White) x594

[Coal (White) x33: Solid combustible material, long-lasting combustion, high calorific value, effective for both smelting and heating.]

"We're rich! We're rich!"

Zhang Shi was overjoyed and couldn't help but shout out.

"Woohoo~"

A voice came from the cave entrance. Zhang Shi turned around abruptly and met a pair of puzzled eyes.