The origin space is directly proportional to the life source. The larger the origin space is, the larger the life source it can accommodate. The process of apostles cultivating the life source is actually a process of continuously expanding the origin space. Whenever they obtain a bit of power, the life source is always used to expand the origin space first and then grow to the limit that it can accommodate. In other words, you have to do two things with only one portion of resources, so the efficiency is naturally not high.

  Generally speaking, if you want to expand the origin space, you can only rely on this method. However, there are still two other ways to break through the blockade of the origin space and expand it.

  Among the three methods of breaking through bottlenecks, for the first method, all the power accumulated by the life source is used to break the shackles, so there is naturally no extra power left. Therefore, apostles who adopt this method progress the slowest after the breakthrough because they still have to repeat the previous process and there is no shortcut.

  The other two methods both draw on external forces, so they have a great impact on the origin space. They can expand the origin space as much as possible on the basis that the life source remains unchanged or even becomes smaller. Apostles who adopt these two methods naturally progress much faster because they save a long process of expanding the origin space.

  Among them, summoning a summoned beast has the best effect on expanding the origin space. However, since the life source is severely damaged by the first impact and requires a long recovery process, it is still not as good as the method of incorporating the life source of the summoned beast.

  Therefore, after the breakthrough, the origin space was expanded by as much as half. Naturally, such a result made Chen Yue overjoyed.

  However, the subsequent mutation scared him out of his wits.

  The life source expanded as if it had taken an aphrodisiac. You should know that the breakthrough process only impacts the origin space, and the intensity of the life source remains unchanged. The green flames used to expand the space will also return to the life source afterwards.

  However, the quantity of the green flames remains the same, but the "sun" (representing the life source) has become larger. This will cause a very serious consequence. After the green flames flow back, the color of the life source will become lighter, and what it represents is: an unstable foundation.

  This is truly an unstable foundation. Even in future cultivation, the life force will not fill the void first and then grow. How could this not make Chen Yue extremely shocked?

  "Damn it! Why didn't Instructor Vinia tell me in advance that there would be such after-effects?" Chen Yue felt dizzy. Watching the green in the life source becoming thinner and thinner while he could do nothing, he couldn't help but feel waves of despair in his heart.

  Actually, he also knew that he couldn't blame Vinia for this. Vinia didn't even know that he had come out for ascetic practice. If he had broken through under her watch, he naturally wouldn't have to worry about the problem of after-effects. She didn't explain it in advance just to prevent Chen Yue from worrying too much.

  "What should I do? Should I just watch helplessly as my foundation becomes unstable and die in the first impact in the future?"

  His mind started working rapidly. Chen Yue racked his brains to think of a way that could come in handy at this moment. After a while, a fierce look suddenly flashed in his eyes.

  "Rather than planting the seeds of disaster, I might as well take a gamble."

  Since he didn't have the power to change the mutation in the origin space by himself, he could only rely on external forces. And the external force that could affect the life source was the first impact.

  Once he made up his mind, Chen Yue didn't hesitate at all. His mind was extremely concentrated, and he started to operate according to the method taught by Vinia. Everything in front of him slowly faded away, and the surroundings fell into darkness without any light. Immediately afterwards, he felt a huge force.

  This force came from nowhere, but it was incredibly huge. In his perception, it extended to an unknown area, and he couldn't see its end at all. The tide-like force kept surging in, driving him to move forward at an extremely fast speed. Moreover, it was still accelerating. Finally, when the speed reached its limit and continued to move forward at this speed for a while, this force suddenly stopped, disappearing as suddenly as it had appeared. And Chen Yue was thrown out by a great force.

  "Boom." It seemed that a certain barrier had been broken. When he stopped, he found that he had left that dark area and arrived at a strange world.

  There was no land, no sky. It was like a silver universe. The silver substance flowed in every corner of the universe. From time to time, various stars appeared inside, shining with bright or dim light, extremely beautiful and mysterious.

  This was the upper world of the Apostle Continent - the Spirit Realm.

  It was the first time that Chen Yue had perceived the Spirit Realm. Everything here was extremely new to him. When he saw the silver substance spreading all over the universe, his mind was suddenly shocked.

  On that day, he and the Ice Rabbit had fought desperately to obtain the silver substance, but there was so much of it here, everywhere in the world. Fortunately, these silver substances no longer had any intimidating pressure and just flowed quietly in front of his eyes without any abnormality.

  It seemed that there was some difference between it and the silver substance in the life core.

  It was as if one was alive while the other was not...

  Shaking his head, Chen Yue threw away his strong desire to study. The time he could stay in the Spirit Realm was limited. This time, he didn't come to study these silver substances.

  To summon a summoned beast, first of all, the soul has to go to the Spirit Realm to sign a contract with the summoned beast. Therefore, the first thing was to find the summoned beast.

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  In the Spirit Realm, he turned into a small green light ball, emitting warm light in all directions. This light was extremely attractive to summoned beasts. Soon, some stars gathered around.

  Chen Yue didn't notice that in the small light ball he had transformed into, there was a faint and extremely fine silver light flickering.

  Each star represented a summoned beast. How many summoned beasts could be attracted and how high-level they were depended on the level of the apostle. After all, Chen Yue was only at the second order. Logically speaking, the number of summoned beasts he could attract was limited, and the quality shouldn't be high either. However, the reality was far beyond his expectation.

  Tens of thousands of stars actually gathered around, densely packed in a thick layer, as if something extremely interesting was happening here, attracting a large number of gossipy guys who had nothing to do all day. On the periphery, there were still some stars rushing towards this side. And the levels of these stars made Chen Yue's scalp tingle slightly. From the one-star summoned beasts that flickered as if they could go out at any time to the five-star summoned beasts whose light shone like the sun, there was everything.

  "Do I have the ability to sign a contract with a five-star summoned beast? Don't set me up, okay?" Looking at those extremely tempting five-star summoned beasts, Chen Yue was both happy and pained in his heart.

  You should know that the time an apostle could stay in the Spirit Realm was quite limited. During this period, the number of summoned beasts that could actually be attracted wouldn't be too many. Moreover, there weren't many high-level summoned beasts. Unless you were extremely lucky, it was very difficult to attract them. Therefore, although apostles could sign contracts with summoned beasts whose levels were not higher than their own, in fact, most of the summoned beasts they signed were of lower levels than themselves.

  For example, Vinia had only signed a contract with the four-star water spirit.

  If there was a chance, who wouldn't want to sign a contract with a high-level summoned beast? However, the first impact caused too much damage to the life source, so most apostles came to the Spirit Realm very rarely, and even if they wanted to sign, they couldn't.

  "Is it really a matter of luck?" If other apostles heard Chen Yue's words, they would definitely be so angry that they would spit blood and faint on the spot.

  It was a pity that although there were so many high-level summoned beasts, he could only look but couldn't sign a contract. Chen Yue still had some sense after all. He knew that the first impact generated when summoning a summoned beast higher than his own level was not something he could bear. The situation of the Ice Rabbit could only be an exception. He didn't want to use his own life to verify whether it could be replicated again.

  As time passed by minute by minute, Chen Yue was in pain and happiness. The only problem that bothered him now was: among so many two-star summoned beasts, which one should he sign a contract with?

  About several kilometers away from Chen Yue's location, the silver substance suddenly fluctuated and surged to both sides, quickly clearing a large area. Immediately afterwards, a green light ball much larger than Chen Yue emerged. Judging from its power, it was undoubtedly a fifth-order apostle.

  Although the Spirit Realm was large enough, the number of apostles accumulated on the entire continent over millions of years was also quite large. Therefore, it wasn't too strange to encounter one occasionally.

  If he had a body, you could imagine that this fifth-order apostle would first shake his hands and feet to loosen his bones, cough a few times to clear his throat, and then sit down unhurriedly. If conditions permitted, he would even make a cup of fragrant tea, like a public institution appearing at a job fair, waiting confidently to be surrounded by a swarm of applicants. However, life was cruel, and he quickly understood this truth.

  Half of the staying time had passed, but only a few summoned beasts had gathered around.

  "Is this the treatment for a fifth-order apostle?" This apostle was completely angry, but unfortunately, no one paid attention to him. He shook his body vigorously and tried his best to emit his light, but there were still very few summoned beasts coming to him.

  "Could it be that I'm just unlucky and happened to be in the area with the sparsest summoned beasts?" Thinking like this, the fifth-order apostle began to look around. This look made him feel as if a basin of cold water had been poured over his head.

  "Over there, could it be that hundreds of apostles have gathered at once?" This was his first reaction and also the most reasonable and absurd explanation at first glance.

  When he carefully identified the densely packed stars, the corners of his eyes couldn't help twitching.

  "Five stars, so many! Good heavens! And six stars... Oh, oh, this is impossible! Eight stars! God, has the world gone crazy?"

  After all, the Spirit Realm was the upper world, and its level was much higher than that of the Apostle Continent. There were plenty of even the highest-level summoned beasts. However, although eight-star summoned beasts were not rare, apostles could only attract and summon summoned beasts whose star levels were not higher than their own. Among the levels of apostles, those above the seventh order were legends. Therefore, although there were many high-star summoned beasts in the Spirit Realm, the top summoned beasts appearing on the Apostle Continent were only seven-star ones.

  "Could it be that finally an eighth-order apostle has appeared on the continent and I've seen him?" This fifth-order apostle thought incredulously. Since he was surrounded tightly by the stars, he couldn't see the situation inside clearly. Naturally, he didn't know that the person inside was actually much weaker than himself.

  Thinking that he could see a legendary eighth-order apostle, he was so excited that he fell into speculation, completely unaware of the passage of time. He didn't even notice that Chen Yue had already left long ago. When he finally woke up from his daydream, he suddenly realized that he had no time left. In a panic, he randomly chose a summoned beast and rushed towards it. When he came to his senses, he found that the summoned beast was: a one-star one...

  Leaving aside that depressed and angry apostle who was about to spit blood, after observing carefully for a while, Chen Yue finally chose his target. Since that eight-star summoned beast had come, most of the summoned beasts below the fourth order had become dim. They expressed their submission in this way. However, there was a two-star summoned beast that hadn't changed at all and was still as bright as before.

  He rushed towards this summoned beast. At the moment when the small light ball touched the star, Chen Yue sent a thought over. When he received an affirmative reply from the other side, it meant that the contract had been officially signed. At the same time, Chen Yue also learned its name: Blade Beast.

  What a strange name, Chen Yue thought. Then his soul began to separate from the Spirit Realm.

  Suddenly, there was a trance in front of his eyes. It was the same darkness again. After another roller-coaster-like experience, Chen Yue returned to the state of perceiving the origin space.

  Taking a deep breath.

  The next moment, a huge amount of information suddenly poured into his mind, and a familiar scene appeared in front of his eyes.

  "Spiritual connection begins..."

  ...