No title, no marriage? Do you think I'm some kind of lapdog?

I transmigrated into the body of the number one simp prince of the Great Qian Dynasty.
On their wedding day, Ye Qingyue publicly forced him to relinquish his title, with her lover standing behind her, smiling calmly.
The guests were all waiting to see him make a fool of himself, but the system suddenly appeared at that moment!
From then on, famous generals of China obeyed his commands, and unparalleled strategists played chess for him.
When Yue Fei's spear swept across the capital, and Jia Xu's strategies swept across the court and the country, those who had once abandoned him like worn-out shoes panicked.
Ye Qingyue knelt outside the mansion, crying and begging to reconcile. He embraced the princess's slender waist beside him and chuckled softly:
"Regret? Too late!"