Key to the Way of Heaven: I Have the Power to Cultivate Immortality Alone in the Last Days

(No harem, no routine, no system, no brainlessness, detailed description and compact plot.) Ordinary animals and plants may turn into violent and strange monsters at any time? Are the myths spread in ancient times actually the past? Is the reason why the end of the world has not come yet actually the result of the ancient sages' struggle against unknown and strange phenomena for thousands of years? In this colorful world, are there a group of extraordinary people with super powers? The lucky one has awakened his superpower, but you are the only one cultivating immortality? A young man named Su Xiaoyin from a mountain village lost his top spot in the college entrance examination and was forced into a corner by fate; He is so weak that he has no background, only the sword in his hand; He is so strong that he has no opponent, and he only cultivates immortality because of other people's abilities; Just when he thought he was going to become an immortal and a god, everything was heading towards the destruction of the world...