From the Start, I Had Eternal Life, and Began Cultivating and Evolving as a Turtle

【Longevity Cultivation + Mythical Beasts + No Female Lead + Witty Humor + Bittersweet Moments + Easygoing Daily Life】 Chen Ping'an was reborn as a Black Tortoise, a member of the lowest-bloodline species in the immortal cultivation world. He awakened the Longevity System and could even bind his little brother to share his longevity attribute. And so, the immortal cultivation world gained two unusual long-lived demons. They kept their distance from the demon race and cared nothing for the insincere humans. From beginning to end, they had just one goal: to live forever, travel across the entire immortal cultivation world, and watch the tides of change rise and fall! This is the story of one turtle and another turtle living long lives. I'm not good at writing introductions, so please head straight to the story.