I'm Just a Dog, but Living for Eternity Seems Only Natural

[Immortality + spirit beasts + everyday life + lighthearted + comedy] Lu Changsheng transmigrates and becomes a puppy that has only just been born. He also comes with an Eternal Longevity System, granting him endless lifespan and one chance to allocate a point every year. And so... “Your puny little demon beast dares to cause trouble in my Wang family? Don’t you know our ancestor is invincible under heaven?” the Wang family head says. “Damn it, if only you’d given me a little more time...” Lu Changsheng replies. “Give you another ten thousand years, and what could you possibly do?” the Wang family head scoffs. Ten thousand years later. Lu Changsheng happily dances on the grave of the Wang family’s ancestor. “Where’s your ancestor?” The Wang family members: “...” Seen through the eyes of a long-lived dog, this is a story of leaving worldly ties behind, entering a golden age of cultivation, enduring dark upheavals, witnessing the Age of Decline, watching all living beings perish, and crossing the river of time...