Super Weapon Exchange System

Qin Guan was most afraid of seeing Lisa. After entering the system these few times, he did not see anyone else and was almost always entangled by Lisa.

What about this time? Will Lisa come up from behind and use that plump meat ball to keep rubbing herself? I really can't stand it myself.

Qin Guan thought in his heart, watching the surroundings.

Here is the same as before. It is a vast land without an endless grassland. There is only a gurgling brook. At this time, by the stream, the post master and Zhou Hou, the two are playing the piano there. The sound of the melodious instruments is in the space. Reverberating inside.

Where is the grassland hero?

The prairie hero’s Trojan horse broke down, and a horse’s leg fell off. At this time, the prairie hero was repairing the Trojan horse there. While repairing it, he still plausibly said: "Don’t let you cross the river, look for the mare over there, you just don’t Listen, it's autumn, what are you in love with?"

Here is the world in Qin Guan’s spirit, where it has not been developed. Everything here is in the spirit. You can get whatever you want. Qin has watched the heroes of the grassland. After so long, he must have been suffocated. .

"Wow." Suddenly, the whole Trojan horse fell apart.

"Damn it." The grassland hero's face was full of anger: "You still don't want to follow me, do you? If that's the case, then I don't want you. I will go find a tank to play, and I will kill you with armor-piercing bombs."

It seems that the tank test during the day has shocked the grassland hero, who is already interested in tanks.

Where is Lisa? Where is Lisa?

Qin Guan was very curious, that Tao Te Ching, has he already finished memorizing it?

"My dear, haven't seen me for so long, do you miss me?" a voice came from behind.

Qin Guan turned his head curiously, and saw Lisa, holding two sweater needles in both hands. She was actually knitting a sweater in her hands?

"Seeing it's coming to autumn, I'm afraid you are cold, so I'm learning how to knit a sweater, let's see, how is my knitting?" After speaking, Lisa took out the sweater in her hand.

The color is bright red. This color will be liked by men and women in later generations, but in this era, few men wear red, right?

Qin Guan looked at the sweater in Lisa's hand and said, "Well, it looks good, but there is only one that is not good."

"Honey, what else do you want?"

"I want blue, white, black, one each, and a sweater-knit hat, gloves, and woolen trousers. Um, woolen trousers and sweaters are the same color." Qin Guan said, "By the way, don't knit hats It's green."

What can one do if one is bored? Try knitting a sweater.

Knitting wool is definitely a good time to spend time. Now that Lisa loves knitting sweaters, Qin Guan is of course very happy. Yes, you can knit so many sweaters so that you won’t come to bother me, yes. Yes, there are some pattern requirements, etc. Anyway, you can play by yourself.

"No problem, dear." Lisa was beside Qin Guan, knitting a sweater without anyone else. At the same time, Qin Guan finally breathed a sigh of relief.

"System, come out."

"Master, what's your order?"

the host? When did you become so humble? What novel are you reading recently? It's okay. Don't look at those romantic, Gong Dou, and see how good the war is.

"In the currency cemetery, I want to exchange gold, then what should I exchange?" Qin Guan asked.

"Of course it's gold, waiting for quality exchange." The system said: "Master, if there is nothing wrong, I will study my maid COS costume."

"Wait!" Qin Guan finally understood, this **** system, what COS is playing recently, is silent in the world of his imagination, blindly yiyin, is it interesting?

"If I want to exchange gold for gold, what use do I want you to do?" Qin Guan was angry at the system.

"Oh, master, I may not have made it clear." The system said: "It doesn't have to be gold, but gold mines are okay. As long as there is gold in it, the system can automatically enrich it when it is exchanged. If you want, you can go for gold at any time and flash people."

There is very little pure gold in nature. Due to the crustal movement and geological changes of hundreds of millions to billions of years, the gold element is enriched in gold deposits. It often contains silver, copper, iron, palladium, bismuth, platinum, nickel, tellurium, selenium, Associated elements such as osmium, natural gold containing more than 15% silver is called silver gold mine, those containing more than 20% copper are called copper gold mine, those containing 5-11% palladium are called palladium gold mine, and those containing more than 4% bismuth are called bismuth Gold mine.

In other words, the grade of gold in gold mines of general industrial value is 2-3 g/ton, rich ore is 5-50 g/ton, extra-rich ore is 50-500 g/ton, and gold nugget is the smallest. Ten grams, the largest one is tens of kilograms, and the rare large nugget is several hundred kilograms. Some of them resemble a dog's head, commonly known as a dog's head gold. If you can pick up this thing, you will definitely make a profit.

Generally, they are lean ore, at 0.1-1 g/ton, generally speaking, there is industrial mining value above 0.5 g/ton.

There must be a lot of gold mines in China now. When Qin Guan goes there, he can’t bring out his value, which means to shorten the time. Therefore, if Qin Guan wants to go, he can only go to those with no mining value. Lean mine, exchange gold.

If the quality is exchanged, the gold mine exchanges gold. In this case, you can also try.

However, only 0.1 gram can be extracted from 1 ton of ore, so a few tons of gold need to be exchanged. It must not be a mountain?

Qin Guan still felt a little broken when he thought of this, but at this moment, Lisa on the side spoke instead.

"Wait for mass exchange, it doesn't have to be element correspondence." Lisa, a woman from the Renaissance era, is actually very familiar with modern science: "For example, the atomic number of gold is 79. We can find copper and tin. , The atomic numbers are 29 and 50 respectively. Together, you can make 79."

What is matter? Matter is composed of the nucleus and electrons outside the nucleus. The type of matter is determined by the atomic number, and this world is the opposite of its original world, but the basic principles are still the same.

One is not good, you can use two instead, it is definitely not difficult to find a few hundred tons of copper and tin.

"Is it okay?" Qin Guan looked at Lisa happily, and couldn't help shaking the other person with his hands, okay? Really?

"Of course there is no problem, but I have to give me permission." Lisa said.

The last time Lisa sent a bra out, Qin Guan was surprised. After that, Qin Guan blocked the loopholes in the system, and there must be no more accidents. Otherwise, what should Lisa send herself out?

Now, this is a big deal. If Lisa solves this problem, in the future, the system will be able to work around it!