A single blow killed it. The corpse beast's head shattered, flesh and blood splattering everywhere. A spirit source appeared, shooting toward Su Li's forehead. New information emerged in his mind. "Level 1 Spirit Source User: Spirit Source 9/10" Excitement surged in Su Li's heart—just one more spirit source to go. Letting out a low shout, Su Li charged forward. The corpse beasts seemed startled awake, abandoning the one-eyed frog carcass they were gnawing on and swarming toward Su Li. Aside from the one whose head he had just crushed, there were still five left. Su Li silently calculated, feeling a bit regretful that there were so few corpse beasts before him. He had grown to love these low-level creatures—weak in strength but capable of providing him with spirit sources. The more, the better. With a flicker of movement, Su Li's eyes tracked the attack trajectories of these low-level corpse beasts as they lunged. He dodged with ease, then swung his hammer down again. With a "thud," another corpse beast fell, a spirit source emerging from its body and flying toward Su Li. "Level 1 Spirit Source User: Spirit Source 10/10" "Done." Su Li was a bit excited. As the spirit source within him reached 10/10, a powerful surge of heat immediately flooded his entire body, followed by an eruption of immense strength. In that instant, his power, speed, reflexes, sensory perception, and overall physical fitness all underwent a massive enhancement and strengthening. Even deep within, he felt a leap of joy. It was an indescribable thrill. In his mind, one message after another appeared in succession. "Promotion initiated, promotion successful." "Level 2 Spirit Source User: Spirit Source 0/20" "Basic Enhancement: Strong Lungs Type 1" "Special Skill: Peep Rune (Incomplete)" "Enhancement Choice: Upgrade Strong Lungs Type 1, Strengthen Stomach, or Strengthen Muscles. Only one can be selected." Feeling the surging power within him, Su Li realized that becoming a Level 2 Spirit Source User had increased his strength by at least a hundred jin. If before he could unleash five hundred jin of force with both arms, now he could muster no less than six hundred jin. The remaining four corpse beasts that could still move charged at him. Su Li didn't have time to choose which part to enhance. He swung his hammer repeatedly. Though the hammer was short, it was made of iron and had some weight. For Su Li's current strength, the hammer was too light, but it could still unleash terrifying lethality. As long as his hammer struck, bones shattered instantly—even the hardest skull was no exception. In a single exchange, Su Li crushed another corpse beast's head. Watching it fall, the spirit source emerged and merged into his body, but there was almost no change within him. As he grew stronger, the changes triggered by absorbing spirit sources became smaller and smaller. Now, they were almost negligible. What surprised him most was that after absorbing this spirit source, no new message appeared in his mind. "What's going on?" Su Li was momentarily stunned. Then, he killed the remaining three corpse beasts in succession. Though he absorbed their spirit sources, there was still no change. He now needed twenty more spirit sources to evolve further. "Could it be that now that I'm a Level 2 Spirit Source User, these corpse beasts are too low-level, so absorbing their spirit sources is useless?" Su Li pondered, considering this possibility. If that were true, it meant becoming stronger would be more difficult—he would need to hunt stronger monsters. "Becoming a Level 2 Spirit Source User also gave me another enhancement opportunity. There are three choices: continue upgrading Strong Lungs Type 1, strengthen the stomach, or strengthen muscles. Which part should I choose?" "Strong Lungs Type 1 enhances lung capacity, extending breath-holding time by two minutes. Choosing this would likely make it even longer." "I wonder what abilities strengthening the stomach or muscles would grant." Su Li knew that in a city submerged by floods, breath-holding time was crucial. However, with his enhanced physique, he could already hold his breath for at least two minutes. Adding the two minutes from Strong Lungs Type 1 meant he could now hold his breath for four minutes. "Four minutes should be enough for now. Even if I fall into the water, that's plenty of time to surface for air. If I can't surface in that time, I've probably encountered something terrifying. Even an extra minute or two of breath-holding wouldn't change much—it'd still be a dire situation." After much deliberation, driven by curiosity about the other two body part enhancements, Su Li ultimately chose to strengthen his muscles. Based on his own speculation, strengthening muscles should relate to power. His fight with the one-eyed frog had taught him that strength was paramount—only with enough power could he hunt stronger foes. As he selected muscle enhancement, new information quickly appeared in his mind. At the same time, he felt an unusual change throughout his muscles. "Basic Enhancement Acquired: Muscle Gain Type 1" "Muscles receive basic enhancement, gaining a hundred jin of strength, improved muscle control, and increased muscle toughness." Su Li took a deep breath, feeling every muscle in his body come alive, writhing and vibrating like small snakes. He could visibly see his chest, abs, arms, thighs, calves—every muscle swelling and bulging. Power erupted from these muscles. Not only that, but his control over them improved. With a thought, he could tense them, making them harder and more resistant to blows. "Incredible. Every muscle in my body has been enhanced. According to the message, Muscle Gain Type 1 adds a hundred jin of strength. Not only that, but I can consciously control these muscles, making any specific one swell and harden. In that state, I can withstand some attacks." Su Li tried controlling his muscles, feeling both surprised and delighted. Breaking through to Level 2 Spirit Source User had increased his strength by about a hundred jin, bringing his arm power to six hundred jin. Now, with Muscle Gain Type 1, he gained another hundred jin of strength. In other words, the force he could unleash with both arms was no less than seven hundred jin. Seven hundred jin—three hundred fifty kilograms. For Su Li, an ordinary office worker who rarely exercised, this was an unimaginably formidable strength. It meant Su Li could now lift five humans, each averaging seventy kilograms, with both arms. "This spirit source is truly astonishing. It can make a person this powerful. And I can become even stronger. Unfortunately, I now need twenty spirit sources, and killing these low-level corpse beasts yields useless ones."