With regard to the effect of freehand plastic surgery, Xu Qiang, the first freehand plastic surgeon in China and the chief freehand plastic surgeon of Titan International, said that freehand plastic surgery depends entirely on manipulations and is adjusted according to individual circumstances, so the biggest difference from surgical plastic surgery is that there is no specific quantitative standard. Individual differences will have different effects. The severity of the problem is different, and the adjustment range is also different! Asymmetry generally happens. The sooner it happens and the longer it takes, the more serious the problem will be. If there is asymmetry in the development process, it cannot be perfectly corrected. Because with the imbalance of muscle strength on both sides, the development of bones will also change with the traction of muscles; After development, the bone shapes on both sides will be different. Therefore, the earlier the problem occurs, the more serious it is, and the less improvement there is.