The structure of the breast can be imagined as a bun-like structure, with the skin of the bun being the skin of the breast and the subcutaneous fat layer, and the internal filling being the glands of the breast. The glandular texture of the breast varies from person to person, most glands in the East are dense, that is, relatively hard, while in the West they are relatively soft. Some women have thicker subcutaneous fat, and their breasts are relatively soft to the touch, or the subcutaneous fat is very thin, and the gland is already there through the skin, so the breasts are hard to the touch, and these differences in texture are normal.