Seeing Wu Hei's actions, Lin Mu could very well tell that this was perhaps a bad memory for him.
"Mother… I… I harmed her…" Wu Hei spoke with difficulty.
"Harmed her? I checked her and her body seems fine. There are no injuries." Lin Mu replied.
"If you saw her, then you must have also seen her behavior… she is like a doll now. She does not speak, she does not respond, she only acts on instinct. I don't even know if she can think anymore." Wu Hei spoke.
Lin Mu furrowed his brows upon hearing this. He knew that this was a condition that was related to a person's brain. But Lin Mu had checked Zhen Sui's entire body, including her brain, and there were no injuries on it either.
'Which means… it's a mental issue?' Lin Mu realized.
"Did this happen when trying to get her out of the grasp of Human Controlling Blood curse?" Lin Mu asked.
"Yes… I was too… Impatient. I should have waited longer." Wu Hei replied.
