Lord Mo couldn't enjoy much happiness. Soon, the power of the haunting spirit curse began to manifest itself, and he aged at a terrifying pace—seeming to grow one year older each day. He was deeply afraid, trying every means to control the strange phenomena unfolding within his body, yet with little success. If this continued, he would inevitably pass away like a normal elderly person, fading away from exhaustion. Fortunately, at this moment, Yu Zichong's spirit was suffering even more. Originally, after entering Lord Mo's body, Yu Zichong had, over time, begun to undergo a phenomenon of being assimilated by the host's spirit. "Assimilation" is a passive form of spirit displacement, where a foreign spirit, lingering for a long time within a host's body, is gradually and unconsciously influenced by the host's spirit, resulting in mutual transformation—yet ultimately only one consciousness survives. Seeing this, Yu Zichong, with no choice, decided to take the initiative and launch a campaign of active spirit displacement. He was not reluctant out of goodwill, but rather out of fear of the three unbreakable tenets of the immortal realm concerning body-taking: First, immortals may not take over mortal bodies; otherwise, the body, unable to endure the process, will collapse on its own. Second, only when a powerful immortal takes over a weaker one—by virtue of greater magical strength—can the transfer succeed without being reversed by the recipient, and the greater the strength gap, the safer the outcome. Third, throughout their lives, regardless of their own magical prowess, immortals may only perform body-taking once; upon attempting a second transfer, their spirit will vanish unexpectedly. These three tenets, forged through countless trials and never broken, have constrained countless villains seeking to stir up chaos through body-taking, and clever individuals attempting to evade calamities by employing this method. Heaven itself has issued warnings against such contrary actions, ensuring that the immortal realm does not descend into widespread disorder through this means—thus preventing the situation from spiraling out of control. Thus, if Doctor Mo were a cultivator, the younger Zi Tong would not fear at all—instead, he could boldly engage in a decisive struggle with him, vying for this physical form. But since Doctor Mo is merely an ordinary mortal, lacking any cultivation power, he would be utterly unable to endure the process of being displaced. He might only make it halfway before the body he is striving to possess collapses completely. Even if he were to find another body to inhabit, he would still inevitably face the fate of assimilation, encountering an even more dire predicament. For each time his spirit enters or exits the body, his cultivation energy would dwindle sharply, eventually being depleted entirely. As a result, he would be trapped within the host body, unable to move freely, and ultimately assimilated. After all, once his spirit has taken form, he has no physical body to meditate upon for replenishment. The cultivation energy he carries is consumed with each use, gradually diminishing over time. He has no idea how long he can sustain himself. Therefore, unless Yu Zichong could find a cultivator with weak magical power who could endure the process of being displaced, he would never again experience his spirit body detaching to take another risk. Under the immense pressure of either his own body collapsing due to the blood spell, leaving his spirit with nowhere to retreat, or himself being gradually assimilated by the other's spirit, the life-loving Yu Zichong, after careful consideration, ultimately had to set aside their long-standing grievances and reluctantly reach out to Doctor Mo, fully disclosing the circumstances and the mutual implications. Initially, Doctor Mo was somewhat angry, but soon recognized the outstanding opportunity. Without hesitation, he established three clear agreements with Yu Zichong and reached a mutual understanding, thereby revealing his strategic and commanding nature. First, Doctor Mo committed to using Yu Zichong's methods to maintain his own consciousness and actively prevent the assimilation of the other's spirit. In return, Yu Zichong taught Doctor Mo certain secret techniques that would slow down his aging process and enable him to temporarily gain magical power. Second, the Master of Ink seeks a child endowed with a spiritual root, capable of cultivating the Ever-Young Power. He will teach this child to cultivate the power, and when the time is ripe, the Master will temporarily draw upon the power he has acquired to achieve a spiritual transmigration, thus renewing his life. At one point, the Master had doubts and wished to cultivate the power himself, but naturally achieved nothing, and was even mocked by the young disciple, Yu Zichong. Only then did he realize that individuals without a spiritual root are incapable of generating spiritual energy, and thus he himself was a mundane, rootless person—exactly the kind of person described by cultivators. The final point is that, after successfully achieving the transmigration, the Master, having secured ample time and stability, will assist the other party in finding a suitable physical body and help them undergo their own transmigration. While these terms appear favorable to the Master, they are ultimately unavoidable, as Yu Zichong's imminent risk of assimilation looms directly before him. Though he finds himself in a disadvantaged position and must inevitably make concessions, whether or not he truly suffers such losses remains something only he can know. During this process, Yu Zichong had proposed that Mo Doctor go to his family's secluded estate to seek assistance. Yet, how could the experienced Mo Doctor, unwilling to hand over the initiative, firmly and without negotiation refuse? This left Yu Zichong harboring a deep resentment ever since. As for what happened afterward, there was little more to say—Mo Doctor had previously failed to find a suitable candidate, grew disheartened, entered the Qiqian Sect, and unexpectedly took under his wing Han Li, teaching him the Changchun Technique. These developments were not much different from what Mo Doctor had described, and Han Li himself had also undergone his own trials. After hearing all this, Han Li exhaled a long, steady breath, and most of his lingering doubts were now resolved. Yet, upon seeing Yu Zichong pause and stop mid-speech, Han Li grew serious, his expression darkening, and said coldly, "It seems you haven't yet told me the cause of Mo Doctor's death." "There's nothing to explain—only that Doctor Mo underestimated your progress in the Longevity Power, and that his magical strength fell far short of yours. As a result, he failed to successfully take over your body and instead was absorbed by you." Yu Zichong hesitated slightly before finally speaking the truth. "So, the first yellow sphere that entered my body was Mo's spirit, and the second green one—yours?" Han Li said it casually. "Well... actually, at the time, I thought you and Doctor Mo would both perish together! To avoid wasting this body, I intended to temporarily borrow it from you." He felt a bit embarrassed. "Hmph! It wasn't just a thought—it was deliberate on your part." "When you first taught Doctor Mo the technique of spirit transplantation, I suspect you didn't have the best intentions. You deliberately omitted any mention of the success conditions, particularly the importance of one's magical proficiency." "With your original plan, Doctor Mo used his self-sacrificing Soul-Consuming Technique and my fourth layer of Ever-Young Power—both in equal measure. Once the spirit transfer began, they would inevitably destroy each other, ending in mutual annihilation. Then you, the third party, would profit—seizing my body and successfully completing the spirit transfer. I believe I'm correct, aren't I? My remaining immortal, indeed!" Han Li spoke calmly and in one breath, clearly stating his assessment. "You're absolutely right—everything indeed was designed by me. Yet I never expected your cultivation potential to be so exceptional, allowing you to reach the sixth stage of the Changchun Technique so swiftly, just one level behind me. Not only did you effortlessly absorb Master Mo's spirit, but even my own spirit, battered by a significant depletion of qi, could not withstand you—further losing considerable qi in the process." However, his tone shifted abruptly, and his voice grew increasingly haughty: "Master Mo Juru, a mere ordinary mortal, dares to stand on equal footing with us immortals, to be on par with us, even to call himself a brother? Does he truly deserve such a position?" "What I find even more intolerable is that he employed underhanded tactics to destroy my physical form, only to aspire to tread the path of immortality—what a dream!" Yu Zitong continued to grit his teeth, clearly harboring deep resentment toward Master Mo for a long time, now finally expressing it without reservation. "But you are different, sir—you possess a natural spiritual root and exceptional talent. It's a great pity that in the worldly realm you've been overlooked. If you would help me find a suitable physical body and assist in the process of taking over its form, I shall serve as your guide, introducing you to the family elders and taking you on as my disciple. What do you think?"