The whole nation is trying to survive on the cable car; I'm choosing one of three options at ea

He glanced at the book, "Battlefield Doctor (Blue)," hesitated for a moment, then took it out and sent it to Lin Yuwei's chat box.

The reply came almost instantly.

A trade request popped up... Five steel ingots and a piece of tempered glass essence were neatly placed in the trade window.

"You're collecting these things, right? They're probably materials for the Level 3 cable car, aren't they?" Lin Yuwei sent a message. "So you're going to upgrade to Level 3 so soon?"

Su Mu's lips twitched slightly as he replied, "No, it's just something to prepare in advance. Just in case we need it later."

Don't flaunt your wealth, lest others covet it.

The other party sent a "hehe" emoji, so they probably believed it.

The transaction is complete.

Su Mu looked at the nine neatly arranged steel ingots and a piece of tempered glass essence in his backpack, took a deep breath, and opened the Level 3 cable car upgrade blueprint.

Materials detected inside the cable car: 9 steel ingots, 1 tempered glass essence

[Additional available components detected: Car engine x1, Transmission x1, Cooling component x1, Mobile phone (disassembled components: Snapdragon chip, battery, speaker, display) x1]

[Consumes 10 Mystic Crystals to fuse the engine and gearbox into the cable car's power system. Effect: Slightly increases movement speed and allows for more precise control of the cable car's speed.]

[Consumes 5 Mystic Crystals to fuse a cooling element. Effect: Provides slight cooling inside the cable car while consuming fuel.]

[Consumes 2 Mystic Crystals, fusing a mobile phone touchscreen and electronic components. Effect: Adds a small control screen to the cable car, allowing for minor adjustments to various cable car parameters.]

Looking at the three options, Su Mu had no choice at all.

I only have 2 Ghost Crystals left... I collected them by killing Ghost Bats last night, but I haven't gotten a single one today.

And he had no intention of waiting to collect enough Ghost Crystals.

Nothing can stop him from upgrading now. After all, features that come with upgrades are merely icing on the cake, and he won't put the cart before the horse.

Moreover, upon closer examination, the first one is only a "slight" increase in speed, and "more adjustable" sounds like it's better than nothing. As for the second one, slight cooling, his current cable car already has the characteristic of being warm in winter and cool in summer, and can withstand temperatures from -15 degrees Celsius to 40 degrees Celsius, so the cooling function is just icing on the cake.

But the third one... is a control screen that can make minor adjustments to various parameters of the cable car. I don't know exactly what it can adjust, but it's better than nothing. And it consumes the fewest amount of Ghost Crystals, and there's no waiting time.

Su Mu chose the third option without hesitation.

[Selection successful. Cable car upgrade begins, estimated time: 8 hours.]

Eight hours?

Su Mu frowned. It had only taken him two hours to level up to level two before, but this time it had quadrupled.

But thinking about it, it makes sense. Upgrading from level one to level two is a small step, while upgrading from level two to level three is a bigger leap and naturally takes longer.

He glanced out the window. It was completely dark, thick fog billowed, and he couldn't see anything. Eight hours... it wouldn't be finished until three or four in the morning.

There's nothing we can do but wait.

The room had become pitch black.

Oh, and fog lights.

Su Mu took out the blueprints from the equipment locations that had been sorted and organized inside the cable car.

Fog Lights (Lv1)

[Type: Cable car internal attachment]

[Effect: After construction, it dispels the darkness inside the cable car and illuminates the surrounding area within ten meters at night.]

[Required materials: 10x High-Strength Glass Essence, 10x Mystic Crystals, 3x Tungsten Wire.]

[Area occupied: Approximately 1.5 square meters (can be placed on top of a cable car)]

It's a pity there's no Mystic Crystal, but even if there were, could this thing hold it? If it did, my own bear trap would be useless.

But then again, are these monsters really afraid of light?

That woman probably didn't make up an excuse.

Su Mu recalled the explanation Lin Yuwei had given him when they first met.

With that in mind, he began searching for related information in the chat history.

Surprisingly, there's quite a lot of discussion about this, so I scrolled down the list of books little by little.

As he scrolled through the pages, a message from a few days ago caught his attention.

[Lin Yuwei: Selling oil lamps! Handmade, long burning time, effectively dispels darkness and monster attacks, proven! One lamp per serving of food, first come, first served!]

This was followed by hundreds of replies.

"I'll have one!"

"Is there anything else? I'll take two servings!"

"Does the boss still have any stock? Please!"

Su Mu paused for a moment, then scrolled up.

Lin Yuwei has been selling oil lamps since last night.

It's not just one or two lamps, it's being sold everywhere.

He roughly estimated... at least two or three hundred servings were sold. At one serving per dish, that's two or three hundred servings.

And she wasn't the only one. The message log showed that Zhou Zhenguo was also helping her sell, along with some unfamiliar names.

These people worked together and sold at least seven or eight hundred oil lamps last night.

Seven or eight hundred servings of food.

Su Mu's eyelids twitched.

He took another closer look at the time and realized that the other party only started selling this item late at night, after he had sold fuel.

Damn it... she said she was going to run away, and I actually believed her.

The results of it?

People used his fuel oil to make oil lamps, and then sold them for hundreds of food items.

He traded those two barrels of fuel for three blueprints and thought he had made a profit.

Holy crap.

profiteer.

This guy is the worst kind of unscrupulous businessman.

More importantly, last night he was saying how "lucky" he was to encounter an elite monstrous bat during the second wave. Turns out, everyone started using fuel lamps, and all the monsters were running towards him.

Su Mu grew increasingly angry, opened his chat window with Lin Yuwei, and typed two words to send:

"Kerosene lamp".

The meaning is very simple... I know exactly how much you've made from me.

Lin Yuwei's reply came quickly, her tone casual:

"Now that you're on the second-level cable car, do you still need a kerosene lamp? I can't make one here. But it's not difficult to make. You can decompose glass essence to get a lot of glass shard containers. Add some water, some fuel oil, and some rice, twist some rags into rope, put them in, and light them."

Su Mu: "..."

"But it's probably going to be difficult for you to make money off this," Lin Yuwei added. "This stuff has a very long burn time, and I bet most people haven't finished using the ones they sold yesterday."

Su Mu stared at the screen through gritted teeth.

Damn, is that what I meant?

He wanted to question this unscrupulous businessman about why he had made so much money without telling him, but the other party casually replied, "Why don't you give it a try too?" leaving him speechless.

Despite his anger, Lin Yuwei's words served as a wake-up call for him.

In this world, not everything needs blueprints to be made. Many everyday items can be made by hand as long as you understand the principles behind them.

Like a fuel lamp... glass shards, water, oil, rice, rags twisted into rope, and you can light it. Although it's not as good as the system's fog lights, it's cheap and affordable for everyone.

This woman is indeed very clever.

Su Mu took a deep breath and made a mental note of it.