Before this, Lin Su was not unfamiliar with the materials related to the Beast Tamers of the martial world.

However, the Beast Tamer materials that had been inherited for thousands of years in the martial world were simply too abundant, and he had only had the time to look through parts concerning different beast species, evolutionary paths, and skill teaching.

After all, these aspects were relatively more important.

As for some of the fundamental knowledge of Beast Tamers, he had not yet had the chance to delve into it.

And now, he finally understood what his mother referred to as the basic energy liquid.

In the Blue Star, humans combined technological methods with exotic beast resources to create training auxiliary goods that served as food and energy supplements: Energy Cubes.

Depending on the specific needs, Energy Cubes were also classified differently, such as the regular Energy Cubes, which did not contain any attributes and simply provided energy enhancement, attribute Energy Cubes, which contained different properties to enhance pets' attribute control, and healing Energy Cubes that contained a large amount of vitality for pets to heal injuries, and so on.

But no matter what kind of Energy Cube, in terms of energy density and applicable targets, they could be classified into first, second, third, and fourth-order Energy Cubes.

First-order Energy Cubes were suitable for both juvenile and elite stages, while second, third, and fourth-order Energy Cubes corresponded to the commander, monarch, and emperor stages, respectively.

In the martial world, similar training auxiliary goods also existed, which is to say, energy liquids.

Energy liquids were divided into three major classes: basic, advanced, and Emperor Level.

Basic energy liquids were suitable for pets in the juvenile and elite stages, advanced energy liquids were suitable for pets in the commander and monarch stages, and Emperor Level energy liquids were suitable for pets in the emperor and immortal stages.

In the Blue Star, with technological means, Energy Cubes had long been mass-produced in factories, and nobody would make Energy Cubes themselves; instead, they opted to purchase finely processed Energy Cubes.

In the martial world, however, Beast Tamers formulated the energy liquids themselves.

With different individuals having varying skills in formulating energy liquids, a natural hierarchy in quality emerged.

Each class of energy liquid could be divided into low, medium, high, and perfect grades, and the effect of different grades of energy liquids varied significantly, even though they belonged to the same class.

After learning about energy liquids, Lin Su's face filled with anticipation, "Qiuqiu, do you think if I learn to formulate energy liquids, we won't have to buy Energy Cubes anymore?"

A money-saving tip every day.

"Meow!" (Makes sense!)

"But we'll have to go to the Beast Taming Union to learn." Lin Su glanced at the material in his hands and shook his head regretfully, "It seems that after my injury heals, I really do need to visit the Beast Taming Union."

By entering the Beast Taming Union, he would officially connect with the Beast Tamers of this world.

Furthermore, if things went as expected, the powerful Beast Tamer he encountered in the Frost Fall Mountain Range that day ought to be a member of the Yongnan City Beast Taming Union.

Last time the individual had left in a hurry, and he planned to prepare a gift as a token of gratitude for the life-saving favor.

"Speaking of which…" Lin Su closed the book and pinched his chin, "I wonder which is more effective: energy liquids or Energy Cubes. You've already fully absorbed the second Energy Cube, how about trying a bottle of energy liquid before we train next?"

"Meow!" (Might as well give it a shot!)

Soon after, Su Qing came in with a tray, which contained ten energy liquid bottles, each patterned with purple veins and containing about one hundred milliliters—something you could drink in a few gulps.

To easily distinguish between different grades of energy liquids, they're generally stored in different crystal bottles; the purple-veined bottles indicated that the contained energy liquid was of high grade.

After Su Qing left, Qiuqiu jumped expectantly onto the table, picked up a bottle of energy liquid, held the bottle with its plump paws, and firmly pulled the stopper using its teeth.

After a soft "pop" sound, Qiuqiu curiously sniffed the bottle opening, and its expression instantly turned into one of satisfaction.

"Meow!ฅ(^ω^*)))" (It smells like dried fish!)

Dried fish, really?

Lin Su was speechless, "Guess it's a new flavor for you."

"Meow!" (Long live dried fish!)

With the bottle in its mouth tilted upward, along came a "glug glug" drinking sound, the liquid in the crystal bottle visibly decreased, until it was completely gone.

"Burp meow~" After placing the bottle down and letting out a cute little burp, Qiuqiu smacked its lips and looked up at Lin Su.

"Meow!" (It seems even more energizing than the previous Energy Cube!)

So, high-grade basic energy liquid was better than a first-order Energy Cube?

Lin Su raised an eyebrow; it seemed that first-order Energy Cubes were roughly equivalent to middle-grade basic energy liquids; indeed, the energy liquids prepared by Beast Tamers of this world had something special about them.

"Let's begin training," Lin Su said with a slight smile, "There's no icy environment here, so we'll skip Frost Storm for now. Today, let's practice Snow Trace and Snow Blow."

"Meow!" (No problem!)

"Hold on, there's a condition." Seeing Qiuqiu full of confidence, Lin Su laughed, "First, create a perimeter of Frost Snow around the garden's edge using Snow Blow, then run circles around the garden with Snow Trace as fast as possible. At the same time, continue using Snow Blow to keep thickening the snow on the track."

"Meow! (￣ω￣)" (Understood!)

Watching the eager Qiuqiu, Lin Su chuckled, "I can't go outside for now, but I can watch your training from the window while I practice meditation."