Three Hundred Years of Foundation Building, and the System Just Arrived?

After five hundred years in this world and three centuries stuck at the Foundation Building stage, Shi Bonian’s lifespan has finally run out. Just as he prepares to leave seclusion for one last feast before his inevitable death, a golden light flashes and a System majestically descends. But there is a catch: why is the first main quest "Embark on the Path to Immortality"? Has his System lagged behind by five hundred years? Shi Bonian smiles mysteriously. Since the System is clearly malfunctioning, he might as well exploit it to the fullest. Divine artifacts like the Treasure Bowl mean financial worries are a thing of the past. Deduction abilities and proficiency trackers are merely standard fare. With idle cultivation mechanics, he can eat, drink, and raise his realm simultaneously. Armed with immortal-level pressure, he can terrify enemies into submission even if he cannot kill them outright. While others endure bitter closed-door training, he intends to experience true joy throughout his extended life, determined to become a carefree and unrestrained immortal. Tens of thousands of years later, Shi Bonian stands as the most powerful Mahayana cultivator in history. Renowned as the world's greatest combatant, supreme swordmaster, god of formations, pill emperor, talisman saint, divine chef, and patron of cautious cultivation, he ascends to the heavens in broad daylight with a triumphant laugh.