Kill Demons and Demons, Kill Gods and Swallow Immortals

[No system, not pure cool writing, high martial arts and low mystery, suspense, delicate characterization, partial to group portraits, no clever villains, a bit slow to warm up. Notice! This is not a brainless piece of writing! Not fast food! Warning before reading: This is not a story about cultivating immortality, but a story about eating immortality. —— What is an immortal? It means being extraordinary and having great supernatural powers. It means to live forever and live as long as heaven and earth. Shen Yuan traveled through time, but emerged from the belly of a giant beast in the deep sea. Not only was he treated as a monster, he was also sent to be sacrificed to heaven. And in this world that we came to, there were esoteric cults that called upon the heavens to pray for spirits, and secretly performed obscene sacrifices in order to seek immortality. There are demons that drink blood, eat flesh, and devour all living things in order to obtain immortal bodies. There are even people who spend their whole lives practicing and seeking immortality over thousands of years. But Shen Yuan is the only strange being in the world who can swallow the remains of ancient immortals. Where did the immortal bones come from, and why could I swallow the immortal bones and become stronger? Many years later, Shen Yuan stood on the torn monster body, touching his bloated belly, still puzzled. He just pointed his sword at the sky and shouted angrily: "A bunch of demons are evil and they want to become immortals?!" "Come into my belly!"