Zhao Ying's indifference comes from the certainty that she would never receive Gu Qingyuan's affection in this lifetime, so she chose inheritance over Gu Qingyuan's love.
Zhao Ying tried for most of her life, giving Gu Qingyuan all her feelings and love. She fell in love with Gu Qingyuan at first sight and then began designing their future together.
She successfully drove away Shen Biran and became Madam Gu as she had wished.
However, when Zhao Ying realized that even after Gu Qingyuan divorced Shen Biran, he still loved her, it dawned on her just how foolish she was.
What had she done for a man who simply did not love her?
Even though Zhao Ying clearly knew that Gu Qingyuan did not love her, and it was because of Gu Xijue that he had to divorce Shen Biran.
Yet, even so, Gu Qingyuan was still her man, Zhao Ying's man.
A woman's innate jealousy led Zhao Ying to a delusion, that as long as she could hold onto Gu Qingyuan, she would be the final victor.
