According to five elements, four seasons, five internal organs and health preservation:

Nourish the liver in spring. The liver is green, in the east. The trick is in the eye. Therefore, nourishing the liver and improving eyesight.

Nourish the heart in summer. The heart belongs to fire. Its color is red. In the south. Its trick is in the tongue. When the tip of the tongue is red, there is a heart fire.

Nourish lungs in autumn. The lung belongs to gold and its color is white. Located in the west. Its orifices are in the nose, the nose is red, there is acne, and the nose groove is greasy.

There is damp heat in the lungs.

Nourish the kidney in winter. Kidney belongs to water. Its color is black. Located in the north. The trick is in the ear. Tinnitus, deafness, dizziness, backache

Soft, it belongs to the fire.

Nourish the spleen and stomach in long summer. The spleen and stomach belong to the earth, which is yellow and located in the center. The trick is in the lips.

Deficiency: slight cough, decreased food intake, constipation, abdominal distension, red tongue and little fur,

Solid symptoms: epigastric discomfort, dry mouth and bitter taste, dry and hard stool.

(Long summer: June in lunar calendar)

I hope it is useful to you.