The Path to Immortality Since Ancient Times

Kang Ming is reborn Reborn in a world where mortals can see "immortals" But they all say they are not immortals Taoism, martial arts, Buddhism, it doesn't matter what you cultivate Everyone of them wants to become a fairy But what exactly is "immortal"? What is the purpose of practice? Where does the path of spiritual practice lead to? Is the only way to become an immortal since ancient times true? Kang Ming doesn't understand, he just wants to protect everything he can protect In this world, everything he cherishes