Liu Dangmo is Guan Yi’s homeroom teacher for twenty years, a strict but caring educator. He is bitterly disappointed when he learns Guan Yi secretly signed up as a Secret Realm explorer instead of attending the National University of Defense Technology. He calls Guan Yi into the office, slams the table, and scolds him, but eventually gives in and wishes him well. He drinks tea while talking and shows his frustration by spitting tea leaves. His lecture reveals his deep concern for Guan Yi’s future and his hope that the boy will come back alive. He represents the teacher figure who cares for his students beyond academics.
