At eighty, the Holy Sect's enchanting woman aided in achieving longevity.

Transmigrating to a world of demons and monsters in the cultivation realm, Chen Changsheng, with his inferior talent, was still a useless servant at the age of eighty. Just when he was about to die of old age, he was unfortunately captured by the arrogant saintess of the Yin Yang Sect and used as a furnace for her to replenish her vital essence.
He thought his time was up, but the night the bed curtains were lifted, Chen Changsheng suddenly awakened the [Myriad Descendants Immortal Clan System]!
As long as you become a Daoist couple with a woman who possesses special luck and have children, you can receive crazy rewards!
"Ding! You have obtained the [Pure Yang Body] after consummating your marriage with the Holy Maiden, increasing your lifespan by 50 years!"
"Ding! The eldest son is born, possessing innate sword bones. The host simultaneously receives the [Supreme Sword Dao Inheritance], and his cultivation level surges by three major realms!"
Thus, the Yin-Yang Sect, which everyone used to avoid, became Chen Changsheng's sacred place for attaining enlightenment.
The haughty saintess, hands on her hips and leaning against the wall, gritted her teeth: "You old bastard, who's the real demon behind this 'life-draining' thing?!"
Years later, when the aloof and powerful empress, the pure and icy saintess, and even the demon king of the demon race were all taken as concubines by Chen Changsheng.
As the gods and demons descended, they saw tens of thousands of exceptional talents standing behind Chen Changsheng, each wielding sword energy that swept across the eight wastelands!
Chen Changsheng leisurely fastened his belt: "Want to destroy my Chen Clan of Immortals? First, ask my 100,000 Immortal Emperor sons if they agree!"