She knew about Yu Yan because she had known her for a long time.
Yu Yan was the assistant that Old Master Qin had chosen for her before Qin Lan got married. She had sworn that she would never betray Qin Lan. But not long after Qin Lan married into the Jing Family and gave birth to Jing Chen, Jing Shao slept with Yu Yan.
Qin Lan would never forget the day she caught Jing Shao and Yu Yan in bed.
If she were to talk about her relationship with Jing Shao, at least before this happened, Qin Lan and Jing Shao could be considered a harmonious couple. Their relationship was not inferior to the current Jing Chen and Su Wan.
But it was that incident that caused an estrangement between the two of them. Old Master Jing was furious and the father and son had a conflict before. Jing Shao left the Jing Family after a big argument with Jing Hai.
