Helping My Concubine to Ascend to the Throne? I Will Marry Someone Else and Ruin the Prince's Career

[The career-oriented heroine who looks pretty and is determined to kill people × the urban-type male protagonist who is harmless to humans and animals but has a dark heart] (In this article, the male protagonist is stronger and the female protagonist is stronger. The male protagonist is love-minded in the later stage, while the female protagonist is career-minded throughout the whole process, and she kills everyone who stands in her way with a sweet and charming face.) As soon as the Xie family's legitimate daughter was born, she was designated as the future crown princess. When she was fourteen years old, she went on an expedition with her father and made military exploits, and was named the Princess of Nanyang. In the same year, the emperor asked her to choose one of the ten princes to be her husband. Xie Zhili took one look at the third prince in the crowd, and the imperial edict for the crown prince's canonization and marriage was made at the same time. However, just one month before the two got married, the prince suddenly wanted to accept her concubine as his concubine, and even wanted to marry them both on the same day. Xie Zhili decisively broke off the engagement and decided to choose another prince to support her. [Plot clip] "Xie Zhili, I am the prince, how dare you talk to me like this?!" "So what about the Crown Prince? On your mother-in-law's birthday, when I gave her a shroud, she had to smile and tell me that she meant it. You, who relied on me to become the crown prince, have what qualifications do you have to show off in front of me?!"