At that time, Grandma Qin outshined the other girls from the Jiang Family with her exceptional food therapy and cooking skills. The only one more capable than her was her lineal elder sister, who happened to be the daughter of a concubine.
Grandma Qin, being a concubine's daughter herself, never aspired to become a concubine. However, to her surprise, the Third Prince fell in love with her and proposed marriage.
The Emperor granted them both marriages simultaneously, with Grandma Qin as the secondary concubine and her lineal elder sister as the main concubine. However, Grandma Qin never anticipated that her lineal elder sister would grow resentful and become apprehensive that the Third Prince might favor the secondary concubine over her.
Driven by jealousy and fear of losing favor, her lineal elder sister took drastic and malicious measures. She had Grandma Qin kidnapped and subjected her to unspeakable horrors, including rape and being blinded with drugs.