Gain Lifespan by Collecting Corpses? I’ll Become Invincible and Immortal at the Funeral Parlor

Any Books About Protagonists Who Raise Ghosts and Refine Corpses?

Looking for books similar to Villainous Heretic: Refining Corpses and Raising Ghosts Isn't Too Much, Is It? Something along those lines.

Paper Effigies, Corpse Driving, Strange Arts, and Hidden Techniques

Supernatural and suspense novels about ancient professions.

Traditional Trades: Corpse Driving, Corpse Stitching, Paper Effigy Making, Body Retrieval, and Night Watch

Ancient Trades Like Beheading, Cremating Corpses, and Sewing Bodies, With Rewards for the Work

Looking for a Book About Traveling to an Evil Power or a Comprehensive World with Evil Power?

The kind of book where the protagonist exorcises demons from these worlds

The Protagonist Has an Infinite Lifespan and Sees Through All the People of the World

No heroine, or one who barely appears. Ideally, the male lead goes through losing the people around him and becomes stoic about it.

Collecting the Great Emperor's Corpse Grants Ten Thousand Years of Cultivation! Protagonist: Lin Wudao

He Helps the Great Emperor Collect Corpses and Gains Ten Thousand Years of Cultivation! The protagonist is Lin Wudao.

A Longevity Seeker Sacrifices Lifespan to Increase Their Cultivation

Douluo: The Protagonist Uses Assassination Techniques to Kill Beasts from the Start, Is Discovered by Bibi Dong, and Is Adopted