The Last Warmth of the Apocalypse

Looking for a Book! Please! Forced Marriage, Possessive Love, and a Darkened Protagonist

I think it was a quick transmigration story with separate arcs. The male lead was a CEO who took an interest in the heroine. She was an office worker who got transferred to work for him. I can't remember all the details, but later he imprisoned her. He was insecure, so the heroine took the initiative to break the stalemate and have a child to reassure him. They had a son named Yaoyao,

A Fantastical Journey After Reincarnating as the Daughter of Beicheng's Richest Man