The Dragon Abyss Immortal Venerable's Sign-In Legend

[Wish fulfillment + invincible + no saintly behavior + no harem + System sign-in] Long Yuan was an ordinary man chosen by fate who accidentally activated a mysterious sign-in System. Every day, each sign-in could reward him with peerless cultivation arts, rare magical treasures, or the aid of powerful divine beasts. Starting out weak and growing stronger step by step, Long Yuan uses his sign-in rewards to overcome hardships, fight powerful enemies, and uncover the world’s shocking hidden secrets. He embarks on an unmatched legendary path to the peak, making the entire world tremble and creating an immortal myth of his own.