Spiritual remnants or spirits of the dead are the remains of people who have died.
Not to mention a Saint, even a Spiritual Master can leave a spiritual remnant before they die.
Of course, the stronger one was, the longer their spiritual remnant could last. But they were certainly not the same people as their real bodies. They were basically nothing more than existences that carried the will of their original bodies.
But they were different from spirits like Luna and the others. They were real spirits whereas Luna and the others were artifact spirits.
...
Qin Tian smiled faintly as soon as he saw Saint Ming's spirit.
Saint Ming at first just looked at him with cold eyes, but his smile made the man unable to contain his anger anymore.
He opened his mouth and was about to speak, but Qin Tian spoke first before he could speak.