https://www.novelupdates.com/series/masquerade-in-bridal-attire-and-marry-the-prince/
Description [Edit]
The fifth young lord of the Du Mansion has no choice but to replace his sister as the bride. He plans to disguise his true identity with his wit against the crown prince, but to his surprise, on the night of their wedding...
Yuxing Tianrui, "You're merely a stand-in!"
Du Chuxuan, "..." He figured already?
