Suspected

There was no need for the masked figure to answer; Gu Qingluan already had the answer in her heart.

The masked figure, named Su Meng, was a descendant of the Spirit Clan and humans.

The Spirit Clan possessed many secret arts, and one of them was various types of contract magic used to form agreements with humans. The contract Su Meng had just signed with her was the most unequal and devout one, known as the Soul Covenant.

Once a Soul Covenant was formed, it bound not only for this lifetime but for all future lifetimes. His soul would be eternally bound to hers.

For the Spirit Clan, death wasn't a true end as long as their souls remained intact.

Each death was just another cycle, with the soul returning to the restricted land of the Spirit Clan and eventually being reborn when the time was right.

This process bore some resemblance to the phoenix's rebirth.