Chapter 142 (1/2)

”Copper mine? Why not exchange it directly for pure copper, which is expensive? ”

”Well Pure copper belongs to metal material, the price should be 50 times higher! Take the copper directly back to smelt, you can get the most metal and high variability.

What's more, most of our current copper is mainly used to build walls, build secret defenses, or expand the holy city.

The city wall only needs 50% copper content to isolate ”life outside the city”. There is no need to use pure copper On the contrary, on the basis of 50%, the hardness and toughness of the wall can be greatly increased by adding other metals or special stones

”Smelting technology It sounds very developed. ”

”There is a special alchemy team in the holy city. Smelting metal is not difficult.”

”Alchemy...” Han Dong is already ”so it is!” Han Dong nodded.

Cass continued, ”and even if we take brass back and get a lot of money But the props provided by the trading center are limited.

In destiny space, points can be exchanged for anything.

Yes Anything, as long as you have enough points, can be swapped for.

Moreover, only those who survive in fate can come here once!

Each time only half an hour exchange time, the opportunity is incomparably precious For example, we have been prepared in advance. If we can pass the customs alive this time, we can exchange what is most suitable for us. ”

According to Kass' instruction, Han Dong reaches out and touches the shell surface similar to Dyson ball.

A screening interface for stereoscopic projection is projected in midair, which is divided into six categories.

[equipment]

[books]

[living things]

[consumables]

[materials]

[Others]

when Han Dong saw such a high-tech projection interface, he further affirmed that this Daisen ball like thing was not the product of the current world.

Also let Han Dong begin to guess the origin of destiny space.

”How can a future higher civilization see the terror and potential danger of” life outside the city ”and leave it on the earth in advance? Go back and ask Mr. Black and white It doesn't make sense for me to guess here. ”

First find brass through the searcher, spend 10 points to exchange for a ton of brass to cross.

Next, as the time limit is only 30 minutes, Han Dong began to quickly check the relevant categories.

Indeed, as Cass said, almost everything can be exchanged here. To open the [equipment] column, you need to go through the selection of quality and category (weapons, helmets, hands, etc.).

The corresponding equipment will be arranged from low to high through integral price, which makes Han Dong dazzled.