Why did Qin Neng see cause and effect?

I have also experienced the pain of illness. Qin can see this cause and effect because he has experienced this kind of pain himself. Qin knows how helpless and miserable patients are and needs someone to help them. He decided to tell everyone about his treatment and let them live a happy life again. Therefore, Qin Neng told the cause and effect because he knew the plight of the sick people and hoped to help them regain their health.