Mrs. Tong thought that Tong Yingying might gain the power to manage the East Palace. Although Tong Yingying was not born by her, she was way smarter than Tong Xuan.
After marrying into the East Palace, with the support of Duke Wu Mansion, Tong Yingying might be able to gain the Queen's favor.
"Even if the crown princess doesn't manage the East Palace well, I'm afraid it won't be up to your daughters to manage it."
Duchess Wu came over and said helplessly, "Brother is already unwise, and Sister-in-law, you are even sillier than him."
Mrs. Tong obviously wanted to make use of Zhou Sisi from Duke Wu Mansion who was mentally deficient…
But how could she just make it so clear? Although Zhou Sisi was a bit retarded, the Zhou family would definitely not allow the Tong family to use Zhou Sisi as a springboard for Tong Yingying to marry into the East Palace!