How did Ye Qianze go missing in 'Mountain Moon Doesn't Know My Heart'? In the novel, Ye Qianze did not explicitly explain how he disappeared. However, according to the plot development, the reason why he disappeared was because he had a conflict with his girlfriend Qin Ziyi. After that, he left the scene due to a misunderstanding on a date and never appeared again. Ye Qianze and Qin Ziyi's plot in the novel was very romantic, and their relationship was very deep. However, due to Ye Qianze's stubbornness and inability to express his feelings, the conflict between him and Qin Ziyi escalated, causing him to leave the scene in a misunderstanding and never return. Therefore, it could be said that the reason for his disappearance was due to emotional conflicts.