I Am A Matchmaker on Taobao - Chapter 84:

What happens when a 20-year-old ordinary young man transmigrates into America with a daily sign-in system, that gives rewards from most insignificant things like chewing gums, noodles to priceless things like shares of top companies, talents, future news etc...Follow how this young man slowly but step by step conquers the......“Maate! Wait, stop, stop, time out, time out.My goal is to live a leisurely and carefree life. Why should I do the thankless job of conquering the world?Shouldn't I spend that time flirting around with beauties or trying new foods and cultures? ““In my last life, I died as a single dog, and in this life, I finally became a rich 2nd generation and got a system, shouldn't I enjoy it? “Shut up! Stop him, and make him shut up! ahem… so, where we were… Yes!But can he truly achieve his dream of a carefree life amidst the treacherous world of business with high-stakes investment and the dazzling entertainment industry?Witness his rise to legendary status, as he becomes a godfather of investment and a titan of entertainment.He only wanted a carefree life, but how did he end up as the most powerful and richest man in the world?

Su Ran, a music prodigy, woke up transmigrated into a book.

At that point in time, the main story arc in the book had already been completed. As a villainess female supporting character, not only did she need to take over the original owner’s pitiful life in poverty, she also gained an instant son right at his rebellious period.

Ten or so more years from then, the son would turn into a twisted, evil villain. He would appear in one of the extra chapters to pick on the male and female lead’s children.

***

Su Ran: Son, you shouldn’t be too outstanding.
Su Han: Why not?
Su Ran: ’cause you will be killed.

Su Ran: Son, would you like to learn music from me and become a zen, little fairy boy who only needs to drink dew.
Su Han: No, I want to go into business so I can support you.

- Description from Novelupdates

Zhao Du'an, a government official leading a cautious life, finds himself transported to another world where he becomes the favored 'pretty face' of a female emperor and an oppressive, power-abusing villain. Before he can relish the moment, he faces mortal danger for releasing a national criminal. Cornered and desperate, he plans to soothe the female emperor to seek mercy, only to discover his 'leading gigolo' role is a sham.Worse still, his notorious reputation prompts officials and heroes alike to impeach and eliminate him; and martial artists and clerical magicians consider him a disgrace. Overwhelmed, Zhao Du'an decides it's better to stop being human to survive.Starting by betraying his allies, he becomes the Emperor's top lackey. Years later, amidst heavy snowfall in the capital, the female emperor Xu Zhen Guan sighs atop the city tower, 'It was supposed to be a pretend companionship, how did it turn real...'Also known as 'Deceiving and Flattering at the Court of Great Yu', 'The Record of a Villain Going White'.

He approached her and announced domineeringly, “Ten million, you're mine!” Little did he know that she would smash his head and flee in panic! Five years later, for the sake of her young son, she endured humiliation and became his wife, always on guard around him, “Get out, what are you doing coming in?” His handsome face darkened, “Woman, you couldn't have forgotten that we are husband and wife, could you?”