"Dad, can I enter the higher level of the Dragon Country?" Time flies, and soon four years have passed, on this day, Ye Tian returned to the earth and found his father Ye Yifan, who was working there to cultivate the source space, and asked with anticipation.

At this time, Ye Tian had already graduated from college, and he had completely replaced Ye Yifan's previous role and became the well-deserved commander of the Earth Civilization and the Earth Federation!

"A more advanced dragon country, it should be okay, hmm, remember to bring my soldiers with you when you go!" Hearing his son Ye Tian's words, Ye Yifan thought about it seriously and finally agreed.

Although Ye Tian had already possessed the strength to enter a higher-level dragon country, including his own strength and the combat power of the soldiers under his command, it was beyond the combat power that Ye Yifan had when he entered those dragon kingdoms that existed between 90,000 and 100,000 years. However, Ye Yifan has been blocking Ye Tian from entering the Dragon Country, on the one hand, to prevent him from encountering danger inside, after all, the situation in each Dragon Country is different, and the dragons in it often have special abilities, no matter how strong they are, there is a certain risk in entering them, on the other hand, in order to sharpen Ye Tian, he deliberately suppressed him at this stage for a period of time, so as not to prevent Ye Tian from being invincible in the world early and entering the realm of being invincible in the heights!

Of course, this is just Ye Yifan's private thoughts, in fact, he also has a very important purpose, that is, he wants to postpone it for a while longer, so that the soldiers under his command can become stronger.

The reason for doing this is an extremely important reason: Ye Yifan found that when the soldiers evolved, if the combat power of the soldiers under his command was stronger, the evolved troops would also be enhanced, and even have unusual characteristics, which was not affected by the rank, but more like a manifestation of the combat power of the soldiers different from the rank!

Specifically. It is that the soldiers who completed Ye Yifan's early evolution are far inferior to the soldiers who evolved after Ye Tian entered the Dragon Country later.

According to Ye Yifan's analysis, there is only one influencing factor here, that is, the strength of these soldiers used to evolve is completely different, most of the soldiers used by Ye Yifan at the beginning were uncultivated soldiers, after all, he did not have imperial buildings at that time, only kingdom buildings, and kingdom buildings can only increase the number of soldiers, but not improve their combat power.

But later, when Ye Tian entered the Dragon Country, the soldiers used were all raised by Ye Yifan's command through imperial buildings. Its strength is far beyond the normal level, and once it evolves, it tends to become stronger, and this strength is not reflected in the level of the soldier, but in the real combat power.

Precisely because of this. That's why Ye Yifan deliberately dragged it out for so long, after all, there are not many dragon kingdoms in the universe. Knock one out and you'll lose one. Even if there will be dragon kingdoms in the later stage, it will be difficult to meet the requirements in terms of years. All in all, Ye Yifan plans to take the opportunity of his son Ye Tian to enter the Dragon Country, and make several super evolved troops!

The next thing was relatively simple, when Ye Yifan handed over the ordinary soldiers and evolved soldiers under his command to his son Ye Tian, and let him enter the Dragon Country. And he told Ye Tian to only use the ordinary soldiers under his command to fight when it was not too dangerous, and if necessary, he would use the evolved soldiers.

After years of nurturing. Even the ordinary soldiers under Ye Yifan's command have combat power comparable to that of a level twenty-fifth soldier, but they are inferior to the latter in terms of characteristics and skills!

However, when facing the dragons in the Dragon Country, which has existed for more than 90,000 years but less than 100,000 years, these soldiers are still competent.

A few days later, Ye Tian returned smoothly, he successfully penetrated dozens of dragon kingdoms that existed between 90,000 and 100,000 years, obtained the imperial buildings of various types of troops as he wished, and also completed the evolution of all types of ordinary soldiers!

"Yes, although this kind of blood knight is only twenty-one, his combat power is comparable to that of a soldier of level thirty, and he also has an extremely anti-heaven ability, it seems that this method is really feasible!" Ye Yifan looked at the evolved soldiers that his son Ye Tian handed over to him, but there was an uproar in his heart.

Although Ye Yifan had already decided that he could use this method to improve the combat power of the soldiers under his command, he never thought that the effect would be so good, and then he only needed to cultivate for a period of time to raise the twenty-first level of the blood knight to a level, and then he could also enter the dragon kingdom that had existed for a longer time to fight!

Ye Yifan was very satisfied with the combat power and characteristics of the Blood Knight, and he saw the hope of quickly obtaining super strong troops from this kind of soldier!

At this time, Ye Yifan's development of the source space is also nearing the end, especially when the area in the source space reaches a radius of 10,000 kilometers, it is basically difficult to expand the area, and even when Ye Yifan puts all kinds of resources including treasures and biological corpses into it, there is no change, and these things no longer dissolve.

On the contrary, the embodied soldiers that Ye Yifan put into it have always been drained of vitality, which makes Ye Yifan see a glimmer of hope.

But it's just hope, in fact, Ye Yifan has already guessed that this source space can be regarded as growing to the limit, unless there is a certain opportunity, in order to break the shackles and make it grow to a greater extent, otherwise he can only stay in this state forever!

"Tick!"

After the source space grew to the limit, a full ten days passed, and a drop of liquid suddenly appeared in the center of the source space, and this drop of liquid like a clear spring did not fall after appearing, but was suspended in mid-air.

"What is this?" Looking at the drop of unknown liquid, Ye Yifan couldn't help but be stunned for a moment, for ten days, the source space didn't know how much life force it had absorbed from the embodied soldiers under his command, but only condensed a drop of liquid, which showed how amazing the effect of this drop of liquid was!

However, at the moment, Ye Yifan had no intention of trying it himself, he thought about it, and finally chose a blood knight, and then took out the drop of liquid and let the latter swallow it.

"Boom!"

To Ye Yifan's surprise, when he just sent the drop of liquid into the mouth of the blood knight, the latter exploded directly and died.

"Reincarnation!"

Without waiting for the Blood Knight's corpse to disperse, Ye Yifan quickly released the reincarnation and rebirth magic on it, and then saw a white light fall from the sky and fall on the Blood Knight's body.

Then, I saw that the blood knight who had just died and exploded opened his eyes again, and at the same time, the damaged body began to recover rapidly, and even grew a large amount of flesh and blood out of thin air, completing the part of the body that exploded.

However, when the white light disappeared, the crisis encountered by this blood knight was not completely resolved, his body exploded again, and blood continued to gush out, which looked extremely terrifying.

"Reincarnation!"

Seeing this, Ye Yifan had no choice but to release the reincarnation and rebirth magic on this blood knight again.

"Boom!"

"Reincarnation!"

"Reincarnation!"

"Reincarnation!"

“......”

The blood knight's body exploded again and again, but he was resurrected by the reincarnation and rebirth magic cast by Ye Yifan, although it was dangerous every time, after all, if the blood knight's body really exploded completely, then the possibility of resurrection would be lost, so Ye Yifan had to pinch the time!

But fortunately, at the beginning, the blood knight would explode as soon as he was resurrected, and Ye Yifan's frequency of casting reincarnation and rebirth magic was extremely fast, but as time went by, it seemed that the energy contained in that drop of liquid was greatly reduced, and the blood knight could slowly hold on for a short period of time, and in the end, it could last for a long time, as long as Ye Yifan continued to release reincarnation and rebirth magic to him during the period, he could ensure that this blood knight would not die.

At the same time, Ye Yifan found that the strength of this blood knight was actually increasing, and almost every few moments, his combat power could be increased by one level, which was amazing!

"Sizzle, with the current strength of the blood knight, I'm afraid it can be compared to a forty-level soldier, and it may even be stronger, it seems that the effect of that liquid is still quite strong!"

"Since this liquid is condensed from the source space, let's call it 'source liquid'!" Then, Ye Yifan gave this liquid another name.

......

Ever since Ye Yifan figured out the efficacy of the source liquid, he has been trying to optimize the soldiers under his command, needless to say the original blood knight, when Ye Yifan threw it into the knight empire, he didn't care about it, and instead focused on other higher-level soldiers, including the twenty-third level of the Seraph, and the twenty-first level Thor.

However, it is worth mentioning that when Ye Yifan tried to use the source liquid to help Thor improve his strength, he found that it had no effect, and the drop of source liquid was almost not consumed in Thor God's body, and then it was spit out again.

At this point, Ye Yifan also understood that the effect of the source liquid should only be aimed at biological soldiers, and a puppet soldier like Thor could not absorb the huge energy contained in it to improve his strength!

"I don't know if I can swallow this source liquid?" Just after consuming a few drops of source liquid one after another to increase the strength of several soldiers, Ye Yifan suddenly thought of a possibility.

As soon as this thought arose, Ye Yifan felt a little difficult to control himself, the more he thought about it, the more he felt that the source liquid was of great benefit to the improvement of his strength, on the other hand, its negative effect would not be too much of a problem, after all, his strength was strong enough, and at the same time, there were a large number of soldiers under his command who constantly provided him with surplus vitality, so he didn't have to worry about encountering danger at all, and the explosion and death like those soldiers encountered would definitely not happen!

"Let's try it, otherwise I'm really a little unwilling!" Ye Yifan thought about it and decided that the next focus was no longer to improve the strength of the soldiers under his command, but to swallow the source liquid himself to see if he could quickly improve his strength......!