As cultivators advance, their lifespans are naturally extended with each realm, yet there are additional methods to further boost both their power and longevity. Consuming special pills (丹, dān), Spirit Grass (灵草, língcǎo), and Spiritual Fruits (灵果, Língguǒ) can grant a permanent increase in lifespan. However, these resources are highly coveted, often guarded jealously by sects, clans, and powerful cultivators, leading to fierce competition, betrayals, and wars.