Transmigrated into the original heroine of the period novel who was cannon fodder

The all-around loyal and loyal male protagonist VS the cute and adorable obedient male protagonist who occasionally shows his paws
"Period text + book travel + space + 1v1, super sweet"
Pei Lingxi was originally supposed to be the extremely lucky and beloved heroine in the period novel.
Pei Bok Joo, who was just a passerby in the book, created a reputation for herself as a lucky doll after her rebirth. She took great pains to snatch the official male protagonist in the book, wanting to replace the life of the original female protagonist Pei Lingxi.
However, she didn't know that the person she wanted to replace had changed his mind from the very beginning.
Miao, the only descendant of the ancient spirit clan who was blessed with incredible luck and fortune, was reborn as the original heroine Pei Lingxi. She married herself to the gangster brother-in-law whom Pei Fuzhu looked down upon in her previous life.
I didn't expect that the little gangster is such an all-rounder with amazing looks, and he is also clingy, loyal and love-minded.