Only After Death Did I Realize That the Earth Is a Spiritual Planet

Human beings have spent tens of millions of years exploring the universe, rushing to the sea of ​​stars and surveying the heavens and the earth, but they have never found any trace of extraterrestrial civilizations. What is even more unsolvable than alien civilization is the end of life and death. Where do people go after they die? Is there a soul in the world, is there reincarnation, is there a so-called underworld?