This domain seems not entirely in the subspace, but within Su Yu’s body! However, this transformation is only half-completed and not truly finished. The edge of the subspace domain is not fully closed and still maintains contact and energy exchange with the subspace. This change appears to be just a prototype, a beginning. Even though it’s just a prototype, it has given Su Yu immense feedback. Su Yu feels that his subspace domain is already partially "self-sufficient." It can independently produce a large amount of powerful spiritual energy without relying on the subspace itself! The spiritual energy Su Yu originally acquired was actually "produced" in the subspace. The emotions, wills, knowledge, desires of living beings... such abstract concepts merge and transform in the subspace into subspace spiritual power that can affect real matter, which is then absorbed and utilized by spiritual users like Su Yu. But now, Su Yu’s domain can partially replace the original function of the subspace, independently generating spiritual energy for Su Yu’s use! The significance of this is indeed too great! This means that even if Su Yu falls into hardship, is sealed up, or even cut off from the subspace, he may not run out of energy. Just like... the Brutal Evil God! "I see, after Fourth Rank, the subspace domain can already be partially self-sufficient..." "I reckon after advancing to Fifth Rank, the subspace domain will be completely closed, becoming independent from the subspace, forming a small subspace that can independently produce powerful spiritual energy." "Even if truly separated from the subspace, energy will never be exhausted!" "No wonder those evil entities, even when sealed for tens of thousands of years, don’t die and can even continuously produce an endless stream of evil energy." "No wonder the previous [King], when controlling the Radiant Mecha, was so powerful, as if merely by changing emotions, they could affect reality." Su Yu, at this moment, had an epiphany. He recalled the abilities displayed by the previous [King] while controlling the Radiant Mecha, which seemed to influence real matter directly without subspace transformation, relying solely on their own emotions. [King] changed gravity and air pressure in a fit of anger. This might be because after reaching Fifth Rank, the subspace domain becomes completely closed and self-sufficient, allowing one to convert emotions into spiritual energy without needing the subspace, enabling such extraordinary feats. Similarly, the endless energy of those evil gods can be explained. These Great Evil Gods, such as Brutality, probably have their subspace domains completely sealed and independent from the subspace long ago. Or perhaps they themselves are the domain, allowing these evil gods to be self-sufficient and have limitless energy. However, such powerful abilities are only available after reaching the Fifth Rank. Read complete versıon only at 𝙣𝙤𝙫𝙚𝙡·𝕗𝕚𝕣𝕖·𝔫𝔢𝔱 Su Yu cannot achieve this for now. His subspace domain is only half-closed and has not completely separated from the subspace. His self-sufficiency is still limited and probably won’t last long. But even if it can’t last, this self-sufficiency still brings great benefits! Moreover, because the spiritual energy produced in the domain is highly compatible with Su Yu, or rather, it is originally the energy "secreted" by himself. The moment it is generated, it directly integrates with Su Yu’s body and spirit without any digestion or absorption process. Furthermore, Su Yu feels that his utilization efficiency of this spiritual energy is far beyond what it used to be. One unit of energy can unleash twice or even more power than before! Previously, Su Yu thought he had achieved the optimal efficiency in the utilization of spiritual energy by learning the extreme efficient use of energy. Now it seems he was still far from it! This newly produced spiritual energy, when used, is the truly optimized efficiency, surprisingly increasing by several times beyond 100% efficiency! This utilization efficiency seems to be tapping into the deep potential of spiritual energy. Doubling or even tripling the efficiency is still far from reaching the limit of this exploitation. Previously, Su Yu treated spiritual energy as fuel, but even with 100% combustion, energy actually has its limits. But now, after advancing to Fourth Rank, Su Yu seems to find that this spiritual energy can, besides burning, perform a "nuclear reaction," naturally boosting the energy exponentially! This spiritual energy flows through Su Yu’s body like blood, continuously making him stronger! This made Su Yu eagerly anticipate how powerful he would become if he truly reached Fifth Rank and all energy was self-sufficient! In fact, even if the subspace domain isn’t closed, he can directly convert emotional will into energy, achieving true self-sufficiency. For instance, the Power of Sunshine and the Power of Pain don’t require subspace conversion, as long as there is enough will and pain, these two forces are endless. This is the special feature of these two forces; they possess part of the capabilities of Fifth Rank before reaching it, no wonder they are so powerful! However, these two forces have quite a few limitations and are not as versatile as spiritual energy. Moreover, Su Yu feels that through this subspace prototype, he can vaguely sense the flow of time and the fluctuations of his destiny! Even a slight sense makes Su Yu extremely excited. Because right now, he hasn’t borrowed the power of the Mechanical God or become quantumized, yet he can vaguely sense the secrets of fate and time! This is because his domain is half-closed, almost like a semi-completed small subspace. As the owner of this small subspace, Su Yu naturally has a profound sense of the various changes within it. And in the subspace, time and destiny changes are inherently included, allowing Su Yu to have a faint sense of these aspects! If he reaches Fifth Rank and the subspace domain is completely closed, he might directly and clearly sense his own destiny! No wonder the previous [King], when controlling the Radiant Mecha, could counteract Su Yu’s destiny observation. "It seems that after advancing to Fourth Rank, developing a time-based occupation is highly promising!" Su Yu recalled his long-held desire to create a time-based occupation himself. With this half-closed subspace domain, he is even more confident in developing a new occupation! At this moment, Su Yu’s wounds from past battles are healing rapidly. Simultaneously, the strength of his physical body, energy, and spiritual power is continuously expanding and growing stronger! One fold, two folds, three folds, four folds... In a short time, his power has increased by seven or eight times, yet it seems to have no end! Originally, Su Yu’s strength was already very close to Fourth Rank. Now, on the original basis, increasing by seven or eight times, he has completely and thoroughly entered the domain of Fourth Rank. All these changes are due to the inherent enhancements provided by his advancement to Fourth Rank. Additionally, as a Giant God Soldier Mechanic, Su Yu also receives extra enhancements from his occupation! Moreover, a steady stream of powerful energy is rushing at him from the void, being absorbed by his body, continuously making him stronger. Su Yu feels that this powerful energy doesn’t come from the subspace or his domain, but from that Fourth-Order Top Hell Mecha. It’s not that Su Yu directly absorbed the energy of the Hell Mecha, because using the Power of Hellish Suffering as energy, direct absorption could cause problems for Su Yu. Instead, as an enhanced Giant God Soldier Mechanic, Su Yu can receive feedback and power from the Giant God Soldier Mecha he personally crafted. The stronger the mecha, the stronger his own body. Much like how Su Yu previously received professional experience through the prayers of believers. The Hell Giant God Soldier Mecha may not pray, but its existence itself provides Su Yu as the owner with powerful strength feedback. This is the essential ability of Su Yu as a Giant God Soldier Mechanic. And this Hell Mecha is a Fourth-Order Top machine, providing Su Yu with an uncertain amount of feedback. Anyway, his power continues to rise, seemingly without end! "Could it be that I’ll suddenly rise to the same level of strength as this mecha? Directly jumping to Fourth-Order Top in one step?" Su Yu, feeling the explosion of his own power, couldn’t help but entertain a bold idea.