1. The mandibular angle is obviously enlarged and everted, with a "Chinese character face" or a "trapezoidal face".

2. The mandibular angle is prominent, and both sides are asymmetrical.

3. The proportion of the upper and lower width of the face is not harmonious, and the distance between the two mandibular angles is too wide.

Operation time: 4 minutes

Anesthesia method: local anesthesia or general anesthesia.