First of all, answer that he has never had plastic surgery. The reason why the face will change is that the bones will re-develop when they grow up. We can refer to domestic stars in China, such as Liu Yifei and Eva Huang. When Xiaolizi was young, her face tended to be younger and her face was shorter, so when the mandible developed, it would appear very heavy. This kind of people often say that the hair cheeks are mainly caused by the following points:

1. Facial skin and soft tissue become thinner and droopy, just like the wall of a wooden barrel is very weak, and the substances inside will naturally bulge out, which is similar to the cause of pouch formation;

2. The internal fat and other tissues are loose and displaced, and there is a buccal fat pad inside this part. These fat fascias are few, fat particles are large, and the sliding degree is high. Fat blocks are loose and easy to move, so low pressure is easy to protrude to the surface;

3. This convex part on the outer upper side of the decree pattern is located at the place where several anatomical units gather and meet. Repeated actions squeeze this part, making this part like a joint, which is easy to produce convex and concave to buffer strength;

4. Another important anatomical reason is that it is located in front of the masseter muscle, which has longitudinal masseter skin ligament. This kind of ligament is not particularly strong, and it is easy to relax, which makes the deep adipose tissue stand out and forms a sheep's gills deformity, which is called "hairy gills".