The mystery of the immortal soul in ancient Egypt is one of the great wonders of human history. In the pyramids along the Nile, mummies lie quietly in their sarcophagi, seemingly waiting for the return of their souls. The ancient Egyptians firmly believed in the immortality of the soul, and with their extraordinary skills, they preserved the deceased in hopes that the spirits would return to the earthly realm. This belief gave rise to unique religious rituals, such as the 'pre-death' ceremony, where priests would experience near-death states to gain insights into soul immortality. These rituals left traces not only in the tombs but were also recorded in hieroglyphics, providing valuable clues for future generations. The ancient Egyptians believed that the soul was divided into 'Ka' and 'Ba', with the former attached to the body and the latter floating in the air. Therefore, they placed great importance on the burial of the deceased, ensuring that the soul could continue to exist. This obsession with soul immortality not only advanced the techniques of mummification but also influenced the cultural and religious beliefs of the entire society.