The old dragon

Su Huan brought six bottles of thick black fat to the store he purchased.

Each of the six bottles of black thick fat contains a full liter.

The other party directly traded with Su Huan after passing a test paper test.

Su Huan paid a cost of no more than 1 steel grams and an afternoon, and made a huge sum of 50 steel grams, which was multiplied by dozens of times, which can be called a huge profit.

Although he knew very well that the purchase price of the research institute should be higher than the offer offered by the shop owner, he did not want to contact the research institute for direct transactions for the time being.

Perhaps the store owner can only judge the authenticity of the black thick fat with test paper.

But the researchers of the research institute must be able to judge the huge difference between the ingredients of Su Huan's black thick fat and the natural black thick fat.

If it is said that the natural black thick fat needs to be purified to remove the impurities before it can be used.

The black thick fat artificially refined by Su Huan is equivalent to the purified natural black thick fat, which can be directly used as a fusion additive.

The research institute is not an ordinary institution. It can even mobilize the driver to hunt and research materials for it. Once Su Huan comes into contact with it, his identity will definitely be exposed.

In this way, how Su Huan should explain the origin of this black thick fat became a problem again.

So earn less and earn less.

Su Huan also only regards this as a transitional way to make money, and does not intend to use it as a long-term means of profit.

After getting a huge sum of 50 steel grams.

Su Huan first went to the warehouse of the castle to exchange a large amount of ingredients.

The food prepared by the dragon snake lizard's three-attribute recipe has already been eaten up. With a wave of his hand, Su Huan directly exchanged enough for the dragon snake lizard to eat twice a day, enough for a month.

Some of the relatively rare dangerous biological materials were almost sold out by Su Huan.

Currently, dragon snake lizards need to eat three times a day.

According to Long Dian's records and Su Huan's feeding experience during this period.

Three meals a day, two meals of three-attribute recipes, and one meal of recipes to speed up growth are considered the best feeding plan.

It's just that this kind of feeding plan needs to spend nearly [-] steel grams for the daily ingredients alone.

A total of more than 50 steel grams in a month is far from what Su Huan can afford.

But now he holds a huge sum of 50 steel grams, plus the remaining steel grams in his hand, it is just barely enough to make up enough for the Dragon Snake Lizard's current food intake for a month.

Of course, with the growth of the dragon snake lizard, the food intake will definitely increase.

If it is fed according to the recipe given by the teacher, it will cost no more than [-] steel grams per month.

However, the dragon snake lizard absolutely cannot grow to the middle growth stage so quickly.

The castle's carriage transported all the large and small bags of ingredients back to Su Huan's home.

Su Huan looked at the ingredients that filled the storage room and the pockets that were empty again: "It's not easy to feed pets."

After supper, Su Huan bought a large amount of black thick fat raw materials again, and made it into black thick fat overnight.

I plan to trade again tomorrow and then quit, bringing to an end the profitable way of selling black thick fat.

After all, the gathering place is not big, if you trade a large amount of black thick fat many times, you will definitely be found out, and maybe the information about your purchase of raw materials will be found out.

The next day.

The owner of the shop that bought black thick fat was speechless looking at the [-] liters of goods in front of him.

Black Thick Butter is a natural material obtained from gathering the resin of the Black Thick Tree.

And the tree species of black thick tree is not only rare, but also grows extremely slowly, it is difficult to cultivate artificially, and the black thick tree that has grown for decades in the wilderness often grows less than one meter high, and some dangerous herbivorous species like to eat The young branches and leaves of the black thick tree, which makes the tree taller than one meter very rare.

And a one-meter-high black thick tree can only collect tens of milliliters of resin every year.

The amount of one or two liters traded by those scavengers teams is often the harvest of a wilderness refugee camp for a whole year.

He has never seen dozens of liters for sale.

"I said whether you accept it or not, I'll sell it in another store." Su Huan said impatiently as he looked at the boss in front of him who was staring blankly for a while.

"Accept, why not accept!"

"But I don't have that much cash, and I'll trouble you and me to go to the savings office later." The boss said flatteringly, he made a lot of money from this transaction.

Su Huan nodded noncommittally.

The Savings Office is also one of the thirteen offices of the Five Bureaus, and its full name is the Currency Issue and Savings Office.

It is an institution that issues currency in the gathering place and provides cash savings services for the residents of the gathering place.

After all, it is not convenient to trade through coins when trading in large amounts.

Just like Su Huan's 50 steel grams yesterday, if all of them were replaced with gold grams, there would be [-] pieces.

Each gold gram weighs ten grams, and two hundred pieces are two kilograms.

But this time the transaction volume was five times that of the last time. If all transactions were made in gold grams, it would be ten kilograms of coins, which would be too inconvenient.

The savings office also gave birth to the transaction savings business.

Both parties to the transaction can first deposit a large amount of coins in the savings office.

During the transaction, the savings office will issue a savings receipt for the saver and provide it to the other party. After the trader gets the savings receipt, he can go to the savings office to withdraw it into cash coins at any time, and the management committee of the entire black lamp gathering area will provide a guarantee.

[36.36, meeting and conflict]

After Su Huan came out of the savings office and got a savings receipt worth 250 million steel grams, he didn't go home in a hurry, but went directly to the castle.

Even after working all night, with two dark circles under his eyes, he did not forget that today is the day the teacher arranged to meet with the four contestants.

The shop owner looked at Su Huan's leaving back with dark eyes and a troubled face, as if he was experiencing a battle between heaven and man.

After a while, when Su Huan had reached the corner, he shook his head and let out a long sigh.

"Forget it this time. This kid can take out so much black thick fat at one time. I guess he is not easy. I am afraid he has some good background. When he comes to trade in the future, he will find out first."

Naturally, Su Huan didn't know that the shop owner he just traded with was facing huge profits, and he was having some thoughts in his heart that he shouldn't move.

He has come to the inner fort of the castle.

In fact, the inner castle is the real black lamp castle.