First of all, make a qualitative analysis: there are many factors that affect looks, and language habits should be one of them. Chinese vowels are not pronounced with big mouth, while foreign devils (English) vowels are pronounced with big mouth, which will inevitably affect muscle growth. Then to draw a conclusion, we need quantitative analysis: take people with different language habits, measure their faces, take characteristic values (especially facial muscles), and then enter SPSS to analyze whether the correlation is significant. The design of this experiment may fully consider the influence of other factors. The control group can go to people who only speak one language in the same area, and the experimental group can take people who are proficient in using other languages in the same area for a long time.

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