A Vicious Female Supporting Character in the Time Travel Era

In the 1970s, the original protagonist was an educated youth who went to the countryside. In order to return to the city, he did anything to frame the heroine and steal her fiancé. In the end, he was ruined. In the 1980s, the original protagonist was the male protagonist's childhood sweetheart, but because he was jealous that the male protagonist and the female protagonist were together, he acted mischievously and was hated by everyone. In the 1990s, the original protagonist was the daughter of a wealthy family, but in order to pursue the male protagonist, he made things difficult for the female protagonist, and eventually his family was ruined.