To be as strong as Sui Yi, as long as there is still a wisp of soul remaining, he can eternally restore to his full strength, even if he loses his flesh and blood body.
Just like Sui Yi seeking Shen Zhiyue to preserve a soul, for that way Shen Zhiyue remains immortal. Like how Sui Yi offered the Emperor's Sword Mind Sacrifice to her, and in just a short time, Shen Zhiyue went from barely surviving to such a formidable state, even if not at her strongest, yet still...
Sui Yi is the same, so even though she suffered backlash and was grievously injured, once she dragged Ji Long through space transfer to the room, she immediately fainted, yet...
A month has passed.
Ji Long tells herself upon awakening.
Yet her consciousness is still hazy, barely able to discern the ancient patterned ceiling above and the cool bamboo mat platform beneath her.
She lies there, without a hint of pain on her body, giving her a sense of never having been tormented by the curse.
