An ancient gate of space stood between heaven and earth, its ancient aura spreading out, causing every soul to tremble... "Everyone, I'm sure you're familiar with the rules for entering the Heavenly Tomb—each clan is allotted exactly two spots, and no more than that." The elder Tongxuan's weathered figure appeared in the sky, his gaze sweeping over the gathered figures, speaking softly. Hearing him, the crowd nodded slightly. The tradition of two entries per clan has always remained unchanged, and continues to this day. However, the ancient clan—responsible for guarding the tomb—has received a more generous treatment. For instance, this time, they are granted five entry slots, a privilege that has naturally drawn envy from other clans. "Xiao Yan, brother, if we enter separately, we'll be randomly transported. So, let's go in together," Xun'er turned to Xiao Yan, smiling. "Agreed." Xiao Yan nodded. He was quite unfamiliar with the Heavenly Tomb, and having Xun with him would undoubtedly save him from many unnecessary troubles. "Boom! Boom!" As Xiao Yan nodded, the ancient gate suspended within the spatial rift in the sky suddenly erupted in a series of thunderous sounds. Then, the gate began to slowly crack open, radiating brilliant light that flooded the surrounding realm. "If the spots have already been assigned, then prepare to enter the Heavenly Tomb. Remember, you will only be allowed to stay within it for three years—after that, the Tomb will automatically expel you." Gazing at the ancient gate slowly unfolding, Senior Tongxuan spoke again in a solemn tone. "Three years—that would be half a year in the outside world..." Xiao Yan paused thoughtfully. This was a once-in-a-lifetime opportunity. The Heavenly Tomb itself was an exceptional training ground, and the time duration was particularly unusual. Should he train within it for three years, his strength would see a tremendous enhancement. "Boom!" The ancient gate in the heavens grew wider and wider, eventually expanding to ten zhang in size, and a thick, mist-like aura of antiquity poured forth from within. "Shh!" As the ancient gate opened, sudden gusts of wind rippled through the forest. Four figures darted across the sky like lightning, swiftly entering the open gate under the watchful eyes of many. "Members of the Ancient Clan... Has Gu Zhen also entered?" Staring at the four figures, Xiao Yan was slightly taken aback. The leading figure was precisely the strong-looking man in a green robe that Xiao Yan had first noticed that day. Behind him stood a man in a silver robe and another notably robust figure. What truly surprised Xiao Yan most, however, was the last figure—none other than Gu Zhen. "Gu Zhen hasn't entered the Heavenly Tomb this time; he must have gone into seclusion," Xun'er said softly. "It seems the setback has dealt a significant blow to him." "If he can't bear even this kind of failure, then he'll stop right here..." Xiao Yan gently shook his head. In his encounters with others, he never grew weary or discouraged by defeat—on the contrary, the stronger the opponent, the more fiercely driven he became. A mindset akin to that of Gu Zai, truly breaking through to the level of Dou Shen, is no easy feat. Indeed, when compared to Gu Zhen, Xiao Yan felt that Gu Zhen's achievements were even more formidable. Though Gu Zhen's talent might not surpass that of Gu Zai, his temperament—calm, composed, and serene—was the most tranquil and steady among the younger generation that Xiao Yan had encountered. This quiet, unshakable nature often granted him an exceptionally resilient capacity for survival. Xun'er nodded in agreement and then smiled warmly, "Shall we set off then?" Xiao Yan nodded slightly, then turned to look at the young physician and others behind him, smiling, "This time, my stay in the Heavenly Tomb will likely be quite prolonged. Should anything arise, you may all return to the Starfall Pavilion first." "Be careful," the young physician said gently, giving a slight nod. Xiao Yan smiled, exchanged a glance with Xun'er, and then suddenly launched into motion, transforming into two streaks of light, swiftly moving toward the ancient gate before vanishing into the intense glow within the massive portal. Following them, the members from the other clans began to take their turns, each swiftly transforming into a streak of light and rushing into the great gate. When the last figure stepped into the great portal, the ancient gate itself surged with intense vibrations, gradually becoming translucent under the gaze of all present, until it finally vanished entirely... "Xun smiled and nodded. It seemed others had been transported to different locations. The Tianmu was incredibly vast—whether or not they would meet anyone remained uncertain." "The energy here is exceptionally strong—far stronger than that of the Ancient Realm," Xiang Yan said, grasping a handful of the hazy gases before him. To his surprise, he discovered that these gases contained an extremely dense and refined celestial energy, far more pure than he had anticipated. Xun smiled gently, tilting her head slightly toward Xiang Yan. "Xiang Yan, which floor would you like to visit?" "If possible, I'd like to go to the ancestral estate of my ancestor, Xiao Xuan—located on the third level of the Tianmu. However, that area is quite perilous. Right now, it's not urgent, as we still have three years." Xiang Yan paused and explained. Xun's expression did not seem surprised by his answer. Knowing Xiang Yan's nature, it was natural that he had come here; thus, he would certainly not easily abandon the ancestral estate of Xiao Xuan. "Come on, the Heavenly Tomb is vast. We'll head straight for the second level—according to my estimate, this should take us about four months. Due to the energy pressure within the Tomb, we can't fly for long stretches, so most of our time will have to be spent walking..." Xun'er smiled gently, her beautiful eyes gliding over Xiao Yan. "When we reach the entrance of the second level, I believe Xiao Yan will reach the peak of Five-Star Domain Mastery. Of course, if our luck is good, even Six-Star Mastery is quite possible." Staring at this ethereal figure, Xiao Yan was momentarily stunned—he had not sensed a single hint of its approach. "Ah… they can blend into the energy mist, approaching us silently and launching attacks without a sound," Xun'er nodded with a smile. With a gentle flick of her jade finger, the figure suddenly twisted and then burst with a soft 'p' sound, a beam of light the size of a thumb swiftly darting toward Xun'er before being caught in her hand. "This is an energy core—storing an exceptionally pure form of energy, precisely what we call a nourishing essence…" Xun'er spread her jade palm, and a rhombus-shaped crystal, about the size of a thumb, appeared within it, gently radiating a soft glow and a dense mist of energy. Generally speaking, the energy cores within the Sky Mausoleum are divided into nine levels. The one I hold, at most, reaches only the second level—far from exceptional. The higher-level cores are typically found deep within the first layer, or even deeper. Look, Brother Xiao Yan—try it first. Simply hold it in your palm and activate your cultivation technique to absorb it. As she spoke, Xun'er flicked her finger, sending the energy core toward Xiao Yan. Xiao Yan caught the core, gently examined it with mild curiosity, and then, as instructed, held it in his palm and began to channel his cultivation technique. With the circulation of the Burned Decree within his body, Xiao Yan suddenly felt a sharp coolness in his palms. Then, he was struck by astonishment as a surge of pure, smooth energy flowed forth like a tide from the energy core, flooding into his body. What amazed him most was that this energy required little refinement—merely circulating through his meridians once, it gradually dispersed throughout his limbs and torso, eventually seeping into his muscles, bones, and cells. Under this gentle infusion, Xiao Yan could clearly sense the strength within him steadily growing stronger. "Hmm… what a marvelous thing—it's absorbed far more smoothly than ordinary pills. It's no wonder that even ancient and spirit clans, such powerful factions, place such high value on it. This must indeed be a truly extraordinary site." After the final surge of energy had entered his body, Xiao Yan spread his hands, and the energy core had now turned into fine powder. A look of amazement spread across his face. If obtaining such energy cores weren't difficult, then achieving Six-Pin Battle Sovereign status within four months truly wasn't out of the question! Seeing Xiao Yan's amazed expression, Xun'er smiled, placed her hands behind her back, and with a gentle tap of her foot, her body glided forward like a graceful butterfly, her clear, melodic laughter softly spreading around. "Come on, Xiao Yan, let's see who among us has gathered more energy cores over the past three years." Xiao Yan smiled and stepped forward, quickly catching up. He was actually quite curious—over these three years, how strong had he become here?