Bai Qingyan mentioned the Marquis of Dingguo. Qin Lang immediately understood. The current series of farces at the Marquis of Loyalty and Courage's residence was all because of this title.
The stepmother wanted Qin Lang's younger brother to inherit the title. However, she couldn't say it openly due to ancestral laws, so she caused many troubles for Qin Lang in secret. She even drove away Qin Lang's mentor, damaging his reputation. This time, she aimed to provoke a conflict between him and the Duke of Zhen's residence by plotting against Bai Jinxiu.
Seeing Qin Lang's pale face and tightly clenched fists, with veins bulging, Bai Qingyan knew he understood.
Qin Lang understood the thoughts of Mrs. Jiang, the mistress of the Marquis of Loyalty and Courage's residence, better than Bai Qingyan. But what use was understanding? Qin Lang, bound by filial piety, couldn't act no matter how capable he was.