Gu Shengyin had always been paying attention to the Zhang Mingshu and Qin Yuanzheng's situation.
She watched as the relationship between Zhang Mingshu and Qin Yuanzheng no longer held the deep affection of the past, observed Zhang Mingshu's ineptitude with domestic affairs, and saw how the entire household of the Prince of Zhenbei's Mansion became a laughingstock in the eyes of others.
At first, Zhang Mingshu still enjoyed the favor of the Princess Consort, but as Qin Shao found excuses to deal with the Prince of Zhenbei's Mansion, and they found themselves without help, the Princess Consort realized how important it was for families of their standing to have reliable in-laws who could speak for them at the Imperial Court.
Moreover, with some discord between Zhang Mingshu and her son, the heart of a mother, regardless of how much she liked Zhang Mingshu, naturally leaned towards her own son. Thus, Zhang Mingshu gradually lost favor with the Princess Consort.