Students use code words to discuss other people's appearance, often out of curiosity, jokes, privacy protection or to avoid direct conflict. Using code words can make them feel more relaxed when discussing, while also avoiding hurting other people's feelings. Specifically, they may use some obscure words, codes or slang to describe other people's characteristics. For example, students may use "the name of a certain anime character" to describe someone's hairstyle, or "cat-like eyes" to imply someone's eye characteristics. They may also use some references or words from pop culture, such as "hipster" and "sales expert". In this way, they can express their opinions or tease others about their appearance while maintaining a certain distance. In this case, the use of code words can not only protect the privacy of the person being discussed and reduce direct harm, but also enhance the sense of tacit understanding and fun within the small group.