Transmigrated into a vicious female supporting role, reborn as a hostage to the paranoid male protag

The sickly, sinister, paranoid hostage prince + the arrogant, willful, and extravagant princess + the cold and elegant young prime minister + the book + the system + the villain + the female college student Zhang Susu who changed her fate against all odds. She traveled through the book and became the vicious female supporting princess Su Yingxue. In the original book, Su Yingxue had a miserable end. She abused and bullied Chu Xingchen for many years, so that the male protagonist had been cold-blooded, cruel and sinister since childhood. Later, after the male protagonist led the army to destroy the country, the first thing he did was to skin Su Yingxue alive, stuff her with straw, and hang her upside down on the city gate for public display! Therefore, in order to survive, Susu had to deliberately please the male protagonist who had been abused by her before, and at the same time, she had to do everything she could to improve her favorability in front of the male second Mo Yunsheng. Until one day...