In order to prevent a single rat dropping from ruining a whole pot of porridge, Tang Feng had no choice but to limit the availability and, moreover, to strictly review the patients' information.
Amongst those treacherous individuals, traits of their malevolence would manifest on their faces, which Tang Feng hadn't paid much attention to before.
Now that he had discovered the issue, he dared not concern himself with quantities anymore; this related to the success or failure of his Foundation, and he couldn't afford to be the least bit distracted.
So, he chose the Silver Soul Eye technique from among the myriad cultivation techniques.
After a night of cultivation, his pupils turned silver, and Tang Feng was very satisfied.