After Lu Ling left, Su Huan first took the elder sister to the Internal Affairs Office to register the family of the master.

The identity card of the ordinary residents of the gathering place has also been replaced with an exclusive identity card for the family members of the master who can pass freely outside the castle and inside the castle of the black light castle.

This allows her sister to travel freely to and from the castle and to and from the castle, as well as to ride the castle's commuter carriage in and out of the castle with her ID card.

It's just that you can't call the castle's carriage directly like a master.

Only fixed-route designated commuter buses can be used.

However, this alone also has a certain guarantee of safety, at least the traffic does not have to rely on walking.

After that, Su Huan began to prepare food for the dragon snake lizard and the treasure hunting beast.

Although treasure hunters can also eat the food of dragon snake lizards, the food of dragon snake lizards is only suitable for dragon snake lizards after all.

And the dragon book also records the most suitable food for treasure hunters.

Before, he didn't have the conditions to gather enough ingredients outside, but now when he returned to the black light gathering place, if he could get the materials, Su Huan was naturally willing to provide the most suitable cultivation food for the treasure hunting beast.

In addition, he still has more than two million steel grams left over from the previous sale of black thick fat.

The financial resources are quite strong for the time being.

Sitting in his study, he began to count the list of materials he needed to procure.

First of all, the food ingredients of dragons, snakes, and lizards.

Before reaching maturity, the food formula of the dragon snake lizard will not change, it is all those kinds, the difference is only in the amount of food feeding.

Before, the food of the dragon snake lizard was 500,000 steel grams a month.

But after reaching the late stage of growth, the food intake of the dragon snake lizard will increase again, and I am afraid that 600,000 steel grams will be enough.

The second is the food recipe of the treasure hunt beast, the price of the ingredients is comparable to the food of the dragon snake lizard, but the food consumption of the treasure hunt beast is only half of that of the dragon snake lizard.

That's 300,000 steel grams.

This may not seem like a lot, but considering the size of the treasure hunter, it is already terrifying, and it is worthy of his name as a mysterious pet.

You must know that the size of the treasure hunting beast is far less than one-twentieth of the dragon snake lizard that has already weighed two or three tons, but the food volume is close to half of that of the dragon snake lizard.

Then, Su Huan also wrote down the materials needed for the recipe that could enhance the dragon snake lizard's vicious attack ability.

Looking at the various materials that had occupied a full piece of paper, Su Huan nodded with satisfaction.

Finally, he added several more materials to the back.

Although he will be able to receive this month's allowance of 250,000 steel grams in two days, the money is not enough to spend.

Other peers who cultivate a pet may have more than enough food of 100,000 steel grams a month.

And he is nearly ten times that of others, how can he become stronger without working hard to make money?

The last few materials are a kind of "money-making" means recorded in the Dragon Dictionary that he has already selected!

After all, black thick fat is the material used to make strange things.

It is a strategic material, and it is inappropriate to sell it in large quantities and it is easy for people to trace it.

The thing he chose was not easy to arouse suspicion.

And even if it is discovered that it is selling it, the chain reaction is far less than that of black thick fat.

Although the profit is not as high as that of black thick fat, it can be called a huge profit.

However, it can make small profits and quick turnover, and even in the future, if the raw materials are enough, it can also be mass-produced on the industrial assembly line.

Su Huan, the castle storehouse, is already familiar with it.

He reported the materials he wanted to exchange one by one, but they were all out of order, making it impossible to guess his true purpose from the materials he had exchanged.

The ingredients of the dragon snake lizard and the treasure hunting beast, Su Huan directly exchanged it for a month and a half.

That's 1.2 million steel grams.

The materials for enhancing the Vicious Attack Ability are not as expensive as imagined, but things are relatively rare, and Su Huan also exchanged enough for the first half of the month, 350,000 steel grams.

Here it went 1.55 million.

In the end, the materials that Su Huan intends to use to make money are 550,000 steel grams.

A total of 2.1 million steel grams.

However, Su Huan exchanged the corpses of the four ferocious rats to the warehouse.

Mature ferocious rats are not very good among low-level dangerous materials, but the rat teeth, claws, and the poison sacs on the gills and the rat skin are all materials that can be used, and one head can be exchanged for 65,000 steel grams, and four heads are exactly 260,000 steel grams.

In this way, once deducted, Su Huan paid a total of 1.84 million steel grams to get all the materials.

Su Huan naturally couldn't hold several large boxes of materials alone, and it was the special carriage of the warehouse that helped him transport them to the villa.

The dragon snake lizard turned into a carrier lizard and carried all the boxes to the basement.

Now the basement has not only become Su Huan's warehouse, but also half of his laboratory.

He had brought in the glassware he had used to prepare the black thick fat.

In addition, several tables of equal height and height were brought from the castle's warehouse where abandoned debris was piled up and put together to serve as a workbench.

Finally, in order to supply water to the laboratory at all times, he also went to the castle's construction department to find a construction crew to install a water pipe to lead him to the basement.

Originally, the project that needed at least a few days outside the castle was completed in two or three hours under the personal supervision of his Su Huan Su Master.

"Everything is ready!" Su Huan put all the materials and tools on the tool table and prepared to start work.

He was going to prepare the food for the dragon snake lizard and the treasure hunter beast first.

And then immediately formulate something that makes money.

After all, his wealth had dropped below the critical value of one million, and he was a little panicked.

And dragons, snakes, lizards, and treasure hunters cost 900,000 steel grams just to feed them a month.

The main reason is that most of the materials required for the food recipes recorded in the Dragon Book are not low, and if you use ordinary ingredients and replace them with the recipes given by the teacher, they can be at least half cheaper.

Follow this high-priced recipe for feeding.

With two million steel grams in his hand, he was a little panicked.

Making money is as important as improving your strength.

It took an afternoon, grinding the material, heating and stirring.

Su Huan was tired enough, and finally configured all the food of the two pets into food that could be stored for a long time, and put it up.

"The next step is to start making money." After hastily picking up two bites of food in the evening, Su Huan, who returned to the "laboratory", had bright eyes.

There were a lot of materials in the castle storehouse, and many of them were useful to him, but they all cost money.

And even if the castle treasury is not available, as long as there is enough money, the procurement department in the gathering place can also purchase it from other places.

So Su Huan is short of money!

Compared to other pilots, he is more short of money.

Other pilots have no means to quickly improve their strength, so they can only rely on years of training and accumulation, but he has a large number of means to improve his strength, but because of lack of money, he can't achieve them one by one.

The thing that Su Huan wants to prepare at this time is called blood incense!

As the name suggests, it is a "perfume".

However, it is definitely not an ordinary perfume that can hide the body odor and aroma, but a special perfume that can increase the spiritual bond and spiritual connection between the master and the pet.

The principle of this perfume is that it can simulate an illusion of almost blood connection between the master and the pet, which can make the pet and the pet master briefly immersed in it, and speed up the establishment of spiritual bonds.

The biggest feature of this perfume is that not only can be used by formal masters, but even special training students who have not yet become masters can also use it to speed up the establishment of a spiritual connection with the young pets in the pet eggs.

It can be called a divine object for newcomers.

Once this perfume is available and circulated on a large scale, it is bound to enhance the heritage of the black light gathering place, and the impact will be great.

And the reason why Su Huan chose this kind of thing to make money.

It is that this thing is very simple to prepare, and the source of materials is simple, there are only two kinds, unlike black thick fat, which also needs to make a special thickening fusion agent.

Even if others look up the source, they can say that they found it by accident, and they can easily pretend to be the inventor, without worrying about being snooped on for deeper secrets.

The way the blood perfume is formulated is:

Blood agarwood, the venom of the dream worm venom sac, crushed and mixed according to the mass ratio of 3:2, baked and dried into powder.

Add distilled water in a ratio of 1:9 and boil until viscous and without water, and finally add distilled water in a ratio of 1:90 and mix and shake and stir evenly until it is liquid and transparent, and it becomes a blood perfume.

The reason why this thing is not very profitable is that the two main materials, blood agarwood and dream erosion worm venom, are very rare.

Blood agarwood is a fragrant wood formed by mixing the body of a blood-related dangerous creature with agarwood after death.

It is usually used as a high-quality incense, which has the effect of refreshing the mind and aphrodisiac and replenishing blood.

It is very popular with high-level people, but the price is expensive, and there are few people who can light it every day in the entire black light gathering place.

And the Dream Eclipse Worm Venom Sac Venom, as the name suggests, comes from the Dream Eclipse Worm.

The Dream Eclipse Worm is the top dangerous species, and basically lives in a group situation, rarely alone, and the leader of the group is even more terrifying Dream Eclipse Worm Queen.

It is estimated that there are only a few bigwigs in the entire gathering place who can hunt this dangerous creature.

The materials are not easy to come by.

Therefore, unless the blood perfume is sold at a sky-high price, it can only be sold at a small profit.

Su Huan spent 550,000 steel grams, and only exchanged for a piece of blood agarwood that was less than 30 grams and 20 grams of dream worm venom.