Married to an Imperial Prince

In ancient China, Prince Sun Zhe Yan, the most ruthless of the former emperor's sons, must absolutely restore his family's reputation to secure the throne for his older brother.
To achieve this, he blackmails one of the most influential ministers at the court: if the minister wants to keep his secrets well-hidden, he must offer his daughter in marriage.
But Minister Liang has more than one trick up his sleeve: to protect his beloved daughter from such a marriage, he decides to sacrifice Mei Xin, his other daughter, the one who was dishonored by another man a few years earlier.
Mei Xin is thus forced to marry a man whose name alone is enough to send shivers through the entire capital...