Traveling Through the World of Immortality, Where Are the Immortals?

Traveling through another world, gods and demons dance wildly, practicing immortality and wielding a sword. I opened the first page of the exercise method, and it clearly said: "If you believe it, you will have it; if you don't believe it, you will have it"? How can a staunch atheist cultivate immortality? Wait, since everyone says that the end of science is metaphysics, then why can't the end of metaphysics be science? Since you rely on idealism, then I will use materialism to deconstruct it! I believe that I want to engage in the ultimate scientific "superstition" in this world of gods and demons!