Heaven-Defying Comprehension: Enlightened in Prison, I Become an Earthly Immortal

【Invincible from the Start + Heaven-Defying Comprehension + Pure Thrills!】 Ye Yun was framed by his imperial brother and condemned to thirty years as a useless prisoner in the imperial dungeon! But who could have guessed that, with his heaven-defying comprehension, he would use the most ordinary cultivation technique to attain enlightenment in a desperate situation? Over thirty years, he had quietly reached the pinnacle of the human path: an Earthbound Immortal! The day he is released is the day a deadly plot closes in! His old enemies have ascended to the throne and hold the empire in their grip. The dynasty is beset by internal and external crises, the demon race is at the gates, and his father's attitude is unclear... Ye Yun takes a single step out of the imperial dungeon, and heaven and earth change color!