Chapter 339

Zhao Chi first used the 【Fire Oil Blueprint】.

【Congratulations, your territory has mastered the "Fire Oil" production technique.】

This is also a kind of technology.

Once used, the craftsmen in the territory can produce it.

But for now, there are still no oil refinery workers.

Nor has an oil refinery shop been built yet.

But it doesn't matter — there are currently 20 construction workers, so it can be built by tomorrow morning.

Fire oil has a very wide range of uses.

There are two ways of lighting in this world.

One is by consuming the energy of spirit-energy stones to activate spirit-energy lamps.

They can emit very clean light energy.

And depending on the attributes of the spirit-energy lamp, different light colors can be adjusted — for instance, white light, yellow light, or other colored light.

But this kind is not cheap.

It is exclusive to nobles and the wealthy.

The most commonly used by ordinary people is fire oil.

Oil lamps in homes, torches burning in the wild — all are fueled by fire oil.

Fire oil is simple to produce, and the raw materials are easy to obtain.

It's just that it can be a bit choking.

Now, among the game obtained from hunting every day, quite a lot of fat can be extracted — all of it is the main material for refining fire oil.

Besides this, there are also some flame traps, or fire oil bombs, which all require the consumption of fire oil.

It can be said this is a technology with extremely wide applications.

Basically every territory will master it.

Oil refinery workers by default only know how to make edible oil, but they can be made to research it — probably after a few weeks or several months the research will be completed.

After all, it's only beginner-level technology, not difficult to research successfully.

One can also directly purchase a blueprint like Zhao Chi did, but it costs money.

This time Zhao Chi also additionally bought a large quantity of materials for making special fire oil.

Because he also bought an improvement book, this means that fire oil in his hands is no longer the fire oil of before.

He took out the 【Fire Oil Improvement Book】.

Activate!

The improvement book gradually became transparent, while emitting a faint glow.

The glow formed a picture before his eyes.

A round oil bottle appeared.

Beside it were many options.

Another familiar realm.

【Please choose improvement direction】

【Fire Oil Improvement Points】 10 points

【1. Brightness 100%】 10 points

【2. Temperature 100%】 10 points

【3. Duration 100%】 5 points

【4. Cleanliness 25%】 2 points

【5. Safety 20%】 1 point

These options are all useful.

Brightness — naturally the most commonly used, and also Zhao Chi's original intention for buying this improvement book.

Now those female craftsmen work overtime every day, but the brightness of oil lamps is really limited, which affects work efficiency.

If multiple oil lamps are lit, it becomes very choking, which also worsens the working environment, causing the mood to drop faster, and also affects work efficiency.

The female soldiers training outside also need light.

The lighting effect of torches is really not much good.

Moreover, the flame of a torch is flickering, and becomes even more flickering if there is wind.

This also affects their all-night training.

And later, after the magical beasts are diverted, there is no distinction between day and night.

In this way, the lighting effect becomes very important.

Temperature is mostly used for making flame traps.

There isn't much time left now, and the flame trap technology hasn't been mastered yet, so for now it's not being considered.

Anyway, later whether researching it oneself or buying an improvement book, either works — improve it when it comes time to use it.

Duration means burning time.

This is also useful.

Improving this attribute can greatly save the consumption rate of fire oil.

But fire oil isn't too expensive, so if other attributes are sacrificed to increase this one, it doesn't feel quite worth it.

Wait until there's a super improvement book later to change it.

Cleanliness is very important.

Lighting a torch outdoors isn't much of an issue, but lighting an oil lamp indoors has a much greater impact.

Indoors are relatively enclosed, so the smell dissipates more slowly.

If the cleanliness could be a bit higher, that would of course be best.

As for safety, it can make storage safer.

After all, fire oil is a flammable substance.

If it accidentally catches fire, the entire storeroom could burn to the ground.

However, this safety only requires 1 improvement point, which seals its fate.

Zhao Chi's target this time is two types — one is for extreme outdoor illumination.

Consider nothing else, only brightness.

It can produce the widest field of vision at night, avoiding night raids.

The second type is for indoor lighting.

It needs to be bright while also paying attention to cleanliness.

So two attributes need to be improved.

Having made up his mind, Zhao Chi improved it directly.

First, activate "Transferring Flowers to Jade."

〖Please select transfer target〗

Select 【1. Brightness】

〖Please select transfer effect〗

Transfer the final 1 improvement point needed for safety to the 10 improvement points after brightness.

〖Current data compatibility: transfer success rate is 66%. Confirm? 〗

This probability is acceptable.

This is why Zhao Chi bought 3 improvement scrolls — if it fails, he can try again.

Click confirm.

〖Data transfer failed〗

Zhao Chi: "…Damn it!"

Gu Qing was stunned, tilted her head up from his arms: "My lord, you still want… me?"

Zhao Chi shook his head: "No, it has nothing to do with you."

"Oh…"

Gu Qing found a comfortable position again and obediently nestled in his arms.

Zhao Chi sighed softly.