Quick Transmigration: My Childhood Friend Regrets It, But Sorry, I'm Married

[System + Quick Transmigration + Changing Couples + No Angst for the Main Character] World One: While pursuing her doctorate, the sweet and obedient childhood friend embarked on a life of indulgence, dating around and treating the original host cruelly. After Lu Yuan transmigrated into the world, he ignored her and found success in both his career and love life. When the childhood friend found out Lu Yuan was getting married, she finally panicked. World Two: A married couple of contradictory temperaments, both business tycoons, dote on their adopted son but place great importance on carrying on their bloodline. They don’t want their family business falling into the hands of someone unrelated to them by blood. After reclaiming their biological child, they immediately arrange a marriage between the two families, force their child to have a baby, and pressure him to join them in secretly swallowing up his wife’s family business. After transmigrating, Lu Yuan gets married but does the opposite of what they expect. He refuses to register under their family name or change his surname, joins forces with his wife to take over the business instead, and builds a business empire of their own.