In addition to the information fed back through the base disk, Qi Fei can also use another world in the "Chaldean" space, which belongs to the special ability of the master, that is, to view the six basic ability parameters of the servant.

In Medusa's case, her ability parameters are: Strength B, Durability D, and Agility A. Magic B, Lucky E, Noble A+.

In order to know Medusa's strength more intuitively, Qi Fei, under the guidance of Olga, took Medusa to the combat test area and let her conduct simulated combat drills to further understand her abilities and characteristics.

In the "Chaldean" space, the Servant's ability is not limited by the base, but is restricted by Qi Fei's qualifications and spiritual power reserves, so Qi Fei can roughly understand the ability characteristics of each Heroic Spirit in advance, as well as their tactical characteristics.

Qi Fei arranged to fight Medusa against Kojiro Sasaki because of his agility as high as A+.

The symbol "+" does not mean that it is higher than A-level, but rather indicates that the Servant has the ability to burst instantaneously and multiply the value.

Qi Fei couldn't quite understand why Sasaki Kojiro, the swordsman in Fuso folklore, was not summoned with the rank of Saber, but with the rank of assassin.

Thankfully, however, this did not erase his extraordinary kendo attainments, and in Olga Marie's words: being able to reach the realm of magic and even noble Phantasms with sword skills alone is a miracle in itself, and it is also the highest conclusion of Kojiro's sword skills.

Therefore, using him to fight Medusa still has a double meaning of viewing and commentary.

The sword and sword shadows, flickering and moving......

Two heroic spirits who did not exist in the same era or in the same region fought an inhuman battle in this empty and huge field.

Despite being summoned as an Assassin, Kojiro himself does not use assassination and surprise attacks as his fighting style, preferring to go head-to-head and use his sword skills to fight his enemies.

And Medusa is a special heroic spirit, her combat skills and experience are not outstanding, far less than a sword hero like Kojiro, but her inherent skills and the number of treasures are very good.

Kojiro's A+-level agility is more reflected in his conscious reaction and nerve reflexes, and the speed of the sword is really fast and rainy, which makes people unguardable.

Medusa's A-level agility is fully reflected in her movement speed, which makes her extremely mobile, and her whole person is like a bullet on the battlefield, and she can also flexibly jump and move in space.

Finally, there is the treasure of the two, which is the so-called mystery.

Kojiro's [Swallow Return], a treasure sublimated from legendary sword skills, belongs to the Demon Sword, and the attack range is limited to a single target, but the lethality caused is undoubted.

And Medusa's Noble Phantasm [Reins of Riding Ying] is a powerful Noble Phantasm with extraordinary abilities both offensively and defensively, and it is a Treasure Phantasm for large-area and wide-area attacks. By summoning and harnessing the Divine Beast Pegasus, it will crash head-on with its super-high-speed dash like a comet impact.

Of course, Kojiro's treasure does not require much spiritual power, and even if Qi Fei does not use the spell, he can support Kojiro to use this killing move.

And Medusa's treasure is different, it requires a large supply of spiritual power, even if Qi Fei equips Medusa with a three-star "Dragon Vein" spirit costume and equips himself with a two-star "Fengsui" spirit suit, the result is still enough to choke, and it can only be completed with a consumption spell.

After some testing, Qi Fei had a clear understanding of Medusa's ability characteristics and fighting methods, and he also had a choice about whether to focus on training immediately.

He now has 13 one-star bronze fires and 7 two-star silver fires, with 39,000 and 70,000 psionic points respectively, and 109,000 psionic energy when added together.

Qi Fei decided to put Medusa aside for the time being and continue to raise the ranks of Arash and Kojiro.

At this stage, even with the assistance of the fate summoning system, he can't raise a phantom spirit at one time, not to mention that Medusa is a three-star spirit base, which requires more resources to consume, and the tactical value is not urgently needed for the current Qi Fei.

He decided to prioritize Kojiro and Arash to level 31, and then train other phantoms.

Kojiro, as his first phantom, is the one he uses as a façade, and he must be promoted to deal with the qualifying after the start of school.

And Arash, as an archer, can complete his long-range output, and the role is naturally indispensable, and when it is upgraded to level 31, after the [Bow and Arrow Creation] is unsealed, there is no need for logistical support.

Therefore, even if Medusa's spirit base is a three-star specification, her cultivation sequence is still delayed.

Regardless of the spec of the spirit base of the wraith, their level increase will be divided into four stages, and each stage is a bottleneck or limitation, and to break through to the next stage, you need a lot of spiritual power or use special resources to assist in the breakthrough.

Taking Kojiro and Arash as examples, raising them from level 1 to level 10 requires a total of 22,000 psionic points. But after reaching this step, it will fall into the first bottleneck, and if you want to continue to improve the level, you need the sum of the spiritual energy consumed by the previous 10 levels, that is, 22,000 spiritual energy points to break through this hurdle and continue the second stage of level improvement.

In the same way, when you reach level 20, level 30, and level 40, you will fall into the second, third, and fourth bottlenecks, and you need to consume the spiritual energy consumed by levels 1~20, 1~30, and 1~40 respectively in order to break through the calm and framework and continue to ascend backwards.

Of course, this is the most basic, clumsy, and universal method.

After years of research and experimentation, the Masters have also found another way, which is to break through the level limit through foreign objects.

The former is the only method used by the vast majority of masters; The latter is the way to play for local tyrants, and ordinary masters have to spend a lot of time saving resources if they want to enjoy it once.

The 109,000 psionic energy provided by 20 fires consumed 22,000 points each for breaking through the level 10 limit for the two phantoms. The phantom level increase and eat psionic energy are all geometric growth, not counting the consumption of breaking through the bottleneck, the total demand for the first ten levels is 22,000 psionic energy, and the next 11, 12, and 13 are only three levels, and 23,500 psionic energy is required.

According to the deduced formula of psionic energy demand, Qi Fei can roughly conclude that level 1~20 requires 154,000 psionic energy, level 1~30 requires 496,000 psionic energy, level 1~40 requires 1,148,000 psionic energy, and level 1~50 requires 2,210,000 psionic energy.

This is only a one-star spirit base, the limit is only 50 levels, if you change the two-star spirit base to level 60, the three-star spirit base 70, the four-star spirit base 80 level and even the five-star spirit base level 90......

Just thinking about it makes people desperate, and I'm afraid that I even want to die.

And around such an almost bottomless pit-like consumption, the master is naturally hungrier and thirstier than the other for all kinds of rare resources, advanced breathing methods and meditation methods, etc., and then it is not difficult to understand why there is a sentence 'The master grows up poor for three generations, and the cultivation of phantom spirits ruins his life'.

In the end, Qi Fei promoted Kojiro and Arash to level 14, and the 20 fire cards he just bought were completely consumed.

After breaking through the restrictions of the first stage, Kojiro unsealed the [Penetration] skill, and Arash unsealed the [Clairvoyance] skill, and the overall strength has been greatly improved.

When the consciousness left the "Chaldean" space, the sky outside had completely darkened, and the bright starlight and the cold moonlight blended together without gaps, spreading along the window in the room, making the ground look as if it was covered with a thin layer of frost.

"......" Suddenly, Qi Fei's eyes were stunned, and then he couldn't help laughing, because he received a request from Kojiro and Arash, so he snapped his fingers and said with a smile: "Come out." ”

As if in response to him, the two figures appeared in the bedroom at the same time, almost in no particular order.

Arash stood beside him, the smile on his face shining like the sun in the day; Kojiro was now in front of the window, turned over and sat on the window in a chic manner.

"Master, it's been a long day, and you should have a good rest, why don't we continue to drink that snow beer tonight and eat that braised prawns in Qianjiang oil?" So straightforward, needless to say, it's Arash.

"The moonlight is just right tonight, do you want to have a drink together? Well, the beer is too incomprehensible, let's drink that Red Star Erguotou! "Even the second pot head can be said to be so angry, and only Kojiro Sasaki has this style.

"......" The two top thugs under his command spoke directly, what else could Qi Fei say, he raised his hand to brush his hair with a smile, and consciously got up from the bed and walked towards the door......