Girls with round faces have rounded faces, and their faces can be decorated with bangs. Liu Qihai's words are more suitable for thick, not for thin bangs such as air bangs, which will expose the shortcomings of big faces.
A girl with a round face can keep a buttoned straight bangs to create a fluffy and full feeling, which will make her face smaller and highlight her lovely and simple temperament. Short hair and long hair are ok, but stiff straight bangs will make her face look bigger and rounder.
Girls with round faces can choose to divide bangs, which can cover the meat on both sides of their faces. Obviously a longer face, like a melon seed face, can also highlight the mature and generous temperament.
If you feel that simply combing bangs is monotonous, you can braid your hair with bangs and change the way you braid your hair. You can have different bangs every day. And oblique bangs can visually lengthen your face and make people look less fat.
Round face is also more suitable for eight-character bangs, which can be divided into two parts. If you like straight hair, you can cut the bangs short to highlight a messy and elegant temperament, or you can iron the bangs into teddy rolls, which will be more playful and smart.