In episode 19, Luo Jiecai knows that he is not sick at all. He was misdiagnosed before, and it was only after several examinations that he was found to be healthy.

The disease is usually considered by western medicine as viral infection, which leads to metabolic disorder. Traditional Chinese medicine believes that wind evil poison invades the human body, leading to imbalance between yin and yang. The obvious changes of the disease are abnormal mental consciousness, abnormal breathing and abnormal diet, digestion and metabolism.