The sole way to cultivate a spirit soul involved the absorption of spirit energy from the spirit ascension platform. That said, it was possible for the spirit soul's owner to strengthen it by advancing their soul rank. This type of growth, however, rarely surpassed ten percent, if it grew at all. Yet before Feng Wuyu's eyes, Tang Wulin's spirit soul had increased by fifty percent and that didn't seem to be the end!
Goldlight's taut body relaxed one vertebra at a time, coiling around Tang Wulin like a protective vest. A flash, and golden veins sprang up over Tang Wulin's skin, his blood essence roaring with strength as they popped into existence. His figure let off a faint layer of gold light.
Eyebrows arching toward the sky, Feng Wuyu muttered, "He really fits our school's motto. What a little monster." Before he knew it, he was shaking his head. "I've never seen anything like this before."