My Cell Prison

Copper mine? Why not directly exchange for pure copper, is the price of pure copper very high?

Well... pure copper is a metal material, and the price is 50 times higher! Take the copper mine directly back and smelt it, you can get the most metal and have high variability.

Also, most of our current copper is mainly used for forging walls, building covert defenses, or expanding the Holy City.

The city wall only needs to reach 50% copper content to isolate the 'life outside the city', there is no need to use pure copper... On the contrary, on the basis of 50%, incorporating other metals or special stones can greatly increase the hardness and toughness of the city wall.

The smelting technology... it sounds very developed.

There is a special alchemy team in the holy city, and it is not difficult to smelt metal.

Alchemy... This is the second time that Han Dong has heard this term. If he returns to school this time, Mr. Black and White will have no special arrangements during the semester. Han Dong plans to use his spare time to start a side business.

After all, Han Dong is different from ordinary apprentice knights.

In addition to the needs of food, clothing, housing, and transportation, additional economy is needed to support this 'special head'.

Of course, Han Dong himself is also very interested in the special science of this world.

In addition to killing monsters in the next instance, it is good to engage in hobbies and relax.

…………

Is this the different benefits brought about by the difficulty?

Replace the brass, I still have thirty points to exchange... Let's see what's there first.

In addition, Han Dong still has a doubt.

That is, if all the points are exchanged for brass, and then used directly as currency in the holy city, is it feasible? That's a lot of money.

Cass immediately vetoed.

Brass is different from copper coins.

The value of copper coins is much higher than its own copper content. As a kind of currency in circulation, it is manufactured and issued by the [Holy City Treasury] under the name of the parliament.

Because copper metal is of great significance to the Holy City.

Using copper coins as high-level circulating currency is also a way to indirectly remind the public of the importance of brass... In fact, not much brass is spent on the manufacture of copper coins.

The copper content of a copper coin is controlled at about 30%, and the total quality of the copper coin is not high.

Its monetary value is realized mainly through a special manufacturing process and an unforgeable seal is printed on the front and back of the copper coin.

So it is! Han Dong nodded.

Cass continued: Also, even if we bring the brass back to exchange for a lot of money...but the props provided by the [trading center] are limited.

In the space of destiny, points can be exchanged for anything.

Yes...anything, as long as you have enough points, you can get it.

Moreover, only those who survived the fate event can come here once!

There is only half an hour of redemption time each time, and the opportunity is extremely precious... Like we have all prepared in advance, if we can pass the customs alive this time, we can exchange for the most suitable thing for ourselves.

According to Cass's teaching, Han Dong reached out and touched the surface of the shell similar to a Dyson sphere.

A screening interface that projects a stereoscopic projection in mid-air is divided into six categories.

【equipment】

【books】

【Living thing】

【Consumables】

【Material】

【other】

When Han Dong saw such a high-tech projection interface,

Further affirmation that this Dyson sphere-like thing is by no means a product of the current world.

It also made Han Dong start to guess the origin of Destiny Space.

A certain future advanced civilization saw the horror and potential danger of 'life outside the city', and the means to leave it on Earth in advance? Go back and ask Mr. Black and White... I guess it doesn't make sense here.

First find brass through the search engine, and spend 10 points in exchange for a ton of brass to trade.

Next, as the time limit was only 30 minutes left, Han Dong began to quickly look up the relevant categories.

Indeed, as Cass said, almost everything can be exchanged here. When the [Equipment] column is opened, it needs to be filtered by quality and type (weapons, helmets, hands, etc.).

The corresponding equipment will be ranked from low to high by the point price, which makes Han Dong dazzled.

The price of a piece of green high-quality equipment is about 20 to 60 points.

And blue sophisticated equipment, the price is at least three figures.

Expensive... definitely expensive.

In this way, as an apprentice knight, Han Dong has to pass through the Destiny Space three times normally to have enough points to exchange for blue equipment... Of course, there are also some special reward fate events that may have points reward.

But there is an upside here.

The various sub-plots of the fate event and the equipment rewards given are basically random.

And here, as long as you have enough points, you can exchange for the most suitable equipment...

Han Dong then clicked on the category of [Books], which belonged to the category that Han Dong was not clear about.

There are various magic books, secret books, and even books of demons inside, and you can also obtain the power of demons from them.

follow closely.

Han Dong also turned to very interesting things, the cultural martial arts belonging to his own motherland, and even the secrets of self-cultivation that only appeared in some novels.

The price of basic martial arts is not very high, about 20 points can be bought.

As far as comprehension cheats are concerned, the cheapest one starts with 500 points, and the quality is above blue... Han Dong will not consider it for the time being.

Although Han Dong's body is not very good, he doesn't plan to buy a body training book to exercise his body... The body only needs to be gradually replaced to improve, there is no need to practice by himself.

Moreover, Han Dong currently has an obscure book on his body, and he has no time to learn other knowledge for the time being.

The column of [Living Things] is what Han Dong values.

Inside, you can also inquire about the lives of all kinds of strange beasts.

Except for humans.

Even some magical and fantasy creatures basically have... all kinds of magical beasts, from small lava dogs and wind wolves similar to ordinary dogs, to dragons, Behemoths, giant sea monsters, everything.

Of course, there are also many humanoid races...such as elves, trolls, half-orcs, mechanical creatures, and so on.

This kind of humanoid life is not only expensive but also limited to purchase (you need to reach the seed germination stage and reach the knight stage to buy such humanoid life).

Some apprentice knights of the 'control system' should exchange living things here.

Han Dong stared at the high-priced living creatures, and was not interested at all... If he wanted, he could just go to the 'Space of Destiny' and grab the ready-made ones.

Chen Li and Togu are by no means inferior to these living creatures in terms of potential.

As for the follow-up consumables and materials, there are also many things that interest Han Dong, such as the potion of life and death, or the potion that can instantly replenish energy, which is enough to solve many dilemmas, but the price is not what Han Dong can currently afford. of.

Han Dong has not made it clear for the time being, and 30 points cannot be exchanged for anything too good, so he is going to keep it for the next time.

that's it.

Han Dong, who exchanged one ton of copper ore, returned to the [Bell Tower].