The viewpoint of ancient Chinese medicine holds that the occurrence of all diseases originates from an internal imbalance in mental state, which gradually extends to other aspects of the body. Firstly, mental illness is the key to all diseases. God, the individual's mental state and internal physiological mechanisms, is the core of human health. When there are problems with God, such as emotional disorders, excessive psychological stress, or confusion, these problems will gradually affect the health of the body.
Secondly, qi disease occurs after mental illness. Qi, in traditional Chinese medicine, is the energy of life and the driving force for the normal operation of various parts of the body. When mental illness is severe to a certain extent, it can cause the movement of qi to be abnormal, leading to the occurrence of various physical symptoms. The appearance of qi disease usually manifests as physical exhaustion, weakness, loss of appetite, etc.
Afterwards, it is the occurrence of blood diseases. When mental illness and qi illness are severe to a certain extent, they will affect the generation and operation of blood. Blood is the nourishment and protector of the body. When there is a problem with blood, various parts of the body are not adequately supplied with nutrients, which can lead to various diseases. The appearance of blood diseases usually manifests as anemia, blood stasis, blood heat, etc.
Finally, it is the onset of physical illness. Shape refers to the form and structure of the body. When mental illness, qi disease, and blood disease are severe to a certain extent, they will affect the shape and structure of the body. At this point, there will be obvious pathological changes in the body, such as swelling, atrophy, pain, etc.
古中医的观点认为，所有疾病的发生都源于内在的精神状态失衡，然后逐渐扩展到身体的其他层面。首先，神病是所有疾病的关键。神，即个体的精神状态和内在的生理机制，是人体健康的核心。当神出现问题时，如情绪失调、心理压力过大或思维混乱等，这些问题会逐渐影响到身体的健康。

其次，气病是在神病之后发生的。气，在中医学中，是生命的能量，是推动身体各部分正常运转的动力。当神病严重到一定程度时，就会引起气的运行失常，从而导致各种身体症状的出现。气病的出现通常表现为身体疲惫、无力、食欲不振等。

再后，是血病的发生。当神病和气病严重到一定程度时，就会影响到血的生成和运行。血是身体的营养和保护者，当血出现问题时，身体的各部分得不到充足的营养供应，就容易出现各种疾病。血病的出现通常表现为贫血、血瘀、血热等。

最后，才是形病的发生。形，指的是身体的形态和结构当。神病、气病和血病严重到一定程度时，才会影响到身体的形态和结构。这时，身体就会出现明显的病理变化，如肿胀、萎缩、疼痛等。