Before the operation, photos were taken from six angles: front, side, top and bottom, and the best face changing scheme was designed according to the principle of "golden ratio" and "three courts and five eyes". Adopt a full set of maxillofacial dynamic system and "continuous arc osteotomy technology" to accurately locate the surgical site; After polishing, the facial lines are harmonious and beautiful, and the facial features are more harmonious, which is in line with personal temperament.