For a square face, it is often said that the face is not wide but the lines are strong, and the chin is short and pointed. This kind of operation can use mandibular angle splitting, which can effectively remove the external bone of mandibular angle without cutting off the whole mandibular angle, and can achieve good results.
Other questions can be asked to Jia Shangyi in Beijing. I hope my answer can help you. I wish you good health and a happy mood!