Nangong Yi also agreed to Zhao Yue marrying Mo Zili. His younger sister was already disgraced; no one would want to marry her. Even if he used his authority to force her into a marriage, she would inevitably face disdain in her mother-in-law's house. However, if she married into Duke Li Guo's Mansion, it would be a different story.
With her maternal grandmother, uncle, and aunt there, even if people didn't like her, they wouldn't let her be wronged. Mo Zili falling in love with Zhao Yue was nearly impossible, but he would never despise her for her past. At the very least, Zhao Yue could live out her life gracefully as Lady Li in Duke Li Guo's Mansion...