Cheng Yu wasn't exactly a mind reader, so he couldn't grasp the hidden meanings in Ji You's words. As a result, he naively thought that the Green Glaze Master wasn't short on money at all, and the reason she shared her array diagram with everyone was merely to find students.
People with low spiritual power couldn't even clearly see the array diagram, as it would already overwhelm their spiritual power. Hence, those common folks outside the shop who thought they had gotten something valuable would faint the moment they opened the array diagram.
Those with slightly stronger spiritual power might hold on a bit longer, but it would be just a matter of a second or half a second.
Only those with very strong spiritual power and a high spiritual silk cleaning rate could endure for a longer time, thus they have the talent for soul device creation.
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