If there is a hard lump on top of the breast that is soft and does not feel painful to the touch, it may be caused by inflammatory stimulation from fire. Inflammation stimulates the soft tissues on the breast after fire, causing abnormal cell proliferation and poor tissue fluid reflux to form hard lumps. In Chinese medicine, most of the hard lumps are formed because of the stagnation of Qi and blood in the body. Some people are angry and do not like to be active, so their emotions are often not expressed and released, and when they are under too much pressure, the accumulation of Qi and blood causes hard lumps. When women are in their normal physiological period, the regulation of hormone secretion level in the body will also form hard lumps. When a patient has a pleural tumor or breast papilloma or breast cancer, the endocrine disorder in the body and the abnormal proliferation of cancer cells will form a lump.