1, the first stage is from strong to weak, and long-term fatigue may lead to the decline of visceral function.

2. The second stage is from deficiency to cold, and qi deficiency further develops into yang deficiency.

3. In the third stage, from cold to wet, the water in the body lacks yang, warmth, transpiration and gasification, which makes the moisture stagnate, resulting in heavy limbs, heavy head and two rows of deep teeth marks on the tongue.

4. The fourth stage is from dampness to stagnation.

5. The fifth stage is from stagnation to stagnation. Poor qi and blood in the body, thick blood, will gradually develop into stasis.

6. The sixth stage is from stagnation to tumor. Stagnation will form lumps and then develop into tumors.