A concubine in the imperial harem who is raising the Seventh Prince. She is one of Shulan's close friends with whom she regularly plays mahjong and chats about palace life. Daijia is anxious about her status in the harem and deeply hopes for promotion, as she cannot truly relax until an official decree confirms her position. Although she already has a son being raised by her, she has not yet given birth to a child of her own, which causes her to sigh with worry when comparing herself to Shulan who has the Sixth Prince. She is ultimately promoted to the rank of Consort Cheng in this round of harem promotions, largely because of her role in raising the Seventh Prince. She is described as someone who is hopeful yet cautious about her prospects in the competitive harem environment.