Before explaining this issue, let’s briefly explain an anatomical term in professional theory and friends: it is called (subcutaneous tissue). Subcutaneous tissue, also known as “subcutaneous adipose tissue”, is located below the dermis, with no obvious boundaries with the dermis, anatomically called superficial fascia, clinically known as cellular tissue. Subcutaneous adipose tissue is a relatively loose layer of tissue, it is a natural cushion, can cushion external pressure, but also he is a thermal insulator, can store energy. In addition to fat, subcutaneous adipose tissue is also rich in blood vessels, lymphatic vessels, nerves, sweat glands and hair follicles. Three points are clear: 1. The main components of subcutaneous tissue are fat cells, fibrous septum and blood vessels; 2. Figure 1: The main components of subcutaneous tissue are fat cells, fibrous septum and blood vessels, and fat cells exist in the form of fat lobules in the fibrous septum Figure 2: Each fat cell is surrounded by capillaries. Next, we will talk about the role of “autologous fat transplantation”: Autologous fat transplantation is to suck excess subcutaneous fat cells from certain parts of the human body, and then the aspirated mixture is purified and purified fat particles are obtained, and the complete particles of fat cells are selected and transplanted to the areas that need to be filled with fat by injection, such as breast, face, etc. The complete fat cells are then selected and transplanted by injection to the areas that need to be filled with fat, such as the breast and face, to achieve breast augmentation, facial contour improvement and facial rejuvenation. After understanding the role of fat grafting, the focus is on “where” we graft: grafting to the part that needs to be filled, this is very critical and needs special attention because the definition is not clear, “where” is grafted to the part that needs to be filled, I am here to I will tell you clearly that for the face, the specific location of transplantation/filling is mainly the above-mentioned subcutaneous tissues; for the chest, it is more complicated, which are the deep surface of pectoral muscle, pectoral muscle, breast and pectoral muscle, deep subcutaneous layer and superficial subcutaneous layer, etc. In the face, most of the transplanted fat will be injected into the fat lobules, which will hinder the movement of the transplanted fat due to the role of the lobular fiber interval, and at a later stage, due to the growth of new blood vessels, further wrapping, so that the transplanted fat cells do not have the opportunity to move to other places. Therefore, from these two points, it can be seen that the fat transplanted to the new location is not likely to “run” to other places again. In addition, the new blood vessels grow into this point is also the difference between autologous fat transplantation and other inorganic grafts such as hyaluronic acid, and it is also because of this point that determines the future of both ……! 2. In the chest, the fat transplanted into the subcutaneous tissue cannot be moved, as in the face. The part of fat tissue transplanted to the deep side of the pectoral muscle, within the pectoral muscle, between the breast and the pectoral muscle, is even more “difficult to move one step” due to the anatomical structure of the starting and ending points of the muscle and the fusion of the boundaries of the deep and superficial tissues. Therefore, the transplanted fat and the fat inherent in the body are “strictly controlled” by the human body, not “wherever you want to go”. The essence of “swelling” is not that the transplanted fat has moved downward, but that the inflammatory edema fluid at the transplanted site is flowing downward! (Keeping a happy and calm mind is very helpful for those who are in the recovery period).