The trio - Su Ci Yi, Qin Yu, and Sang Shui were able to escape the devil's luck just in a nick of time. A little miscalculation on Su Ci Yi's enchantment could derail their transportation spell that could make a reverse impact on her.
Her transportation spell is one of her prominent spells, once she was still a nascent soul cultivator on their sect. Although the same spell requires a massive amount of spiritual energy but if performed correctly can be one of the convenient spells on her records.
But since the spell was abruptly done and with some instruction were missed because of the fuzzy and forgetful memories of her, Su Ci Yi wasn't able to perform it smoothly.
In violation of the supposed to be the premise in conducting the spell, it came back to her body.
