The so-called systematicness actually refers to the meaning of the five senses under what structure. In addition to the ratio of face length mentioned above between Ma Su and Amami in Yuuki, the sense of systematization also includes the three-dimensional degree and shape of the five senses. For example, the most common rule at present is that the structure with high stereo degree is more suitable for mature facial features, and the structure with low stereo degree is more suitable for small facial features. ?
We used to say that facial details are hedged, but in fact they are hedged within a certain range. If the five senses slightly exceed the system balance, they will have a sense of surprise and form their own style, while obviously exceeding the system balance will be weird. The picture below shows Cecilia Cheung, whose stereoscopic degree slightly exceeds the system balance, but it is still within a certain range. Cecilia Cheung is a handsome facial features, with a high three-dimensional sense, which slightly exceeds the needs of the facial features. The picture below shows Zhang Ruonan, whose facial features are close to Cecilia Cheung's, but the stereoscopic degree matches the facial features. She's beautiful, too, but she's a little satisfying, not as amazing as Cecilia Cheung. ?