Qingyang Luo

As a teenager, Mianmian is hot-tempered and quickly annoyed by Wei Wuxian's teasing flirtation.

She possesses a strong sense of logic and justice, as she joined Lan Wangji in defending Wei Wuxian against the entire cultivation world. Though she did not believe Wei Wuxian's actions to be justified, she took issue with the exaggeration that he slaughtered indiscriminately.

Despite her rationale, she is ridiculed and dismissed as an emotional woman by the members of her own clan. Her temper returned, and she immediately left her own clan for their mistreatment, displaying her sense of justice once more.

(Source: Mo Dao Zu Shi Wiki)