1. The face width is different: a long face, as the name implies, means that the face is relatively slender, and the width of the forehead, cheekbones and mandible is basically the same, but the face width is less than two-thirds of the face length, while the face width of the oval face is smaller.
2. The sharpness of the face is different: the chin of the oval face is sharper than that of the long face. There is a saying of "three courts and five eyes" in China's ancient painting theory, which talks about the vertical and horizontal proportional relationship of people's facial positive view, and the ideal oval face completely conforms to this ratio.
3. The proportion of faces is different: the oval face is more inclined to three courts and five eyes than the long face, which is the standard proportion of people's aesthetics.
Extended information:
A beautiful face is divided into four equal parts vertically from the midline of the face to the left and right through the lateral edge of the iris and the lateral boundary of the face. Generally speaking, the oval face also meets this ratio. It is the most advanced form among the three elements of beauty. Harmony in vertical direction is one of the regular manifestations of facial structure.
some people think that the height of the lower 1/3 and the middle 1/3 of a normal person should be roughly equal. Some people think that the middle and lower parts of a normal person's face are generally coordinated, but not necessarily equal, and the lower 1/3 height should only be close to the middle 1/3 height. Because the nasal root point is a bone sign and the surface is not clear, it is advocated to replace it with the distance from the canthus to the corner of the eye. If the height of the lower 1/3 is greater than that of the middle 1/3, the feeling of long face deformity will be formed.
on the other hand, the facial harmony of beautiful people is also manifested in the coordination of width, and the width in the middle of the face (the distance between the condyles) is about 1.3 times of the width under the face (the distance between the mandibular angles). If the width under the plane is equal to or greater than the width in the plane, the width is not adjusted. < P > In the frontal view, the mandibular angle is over-abduction, and the masseter muscle is hypertrophy and bulging. Viewed from the side, the mandibular angle is mostly less than 123, or even almost at right angles, which will give people a sense of respect. Although this can be said to be masculine for men, it completely loses the gentleness and delicacy of appearance for women.
Reference: Baidu Encyclopedia-long face
Baidu Encyclopedia-oval face.