Mitou Shoukan://Blood-Sign - Volume 8, Ending X-01 - Do Not Underestimate Youth

A fighting genius.

Transmigrating into a world of cultivation, you find yourself at the lowest rung of the sect's hierarchy. Everyone wants to bully you to gain some benefits. Fortunately, there are always a few junior brothers and sisters who are 'generous and understanding', allowing you to improve peacefully and secretly grow stronger. Years later, unbeknownst to anyone, you successfully become a deity within the sect. This day, your master visits you at the sect's request.'The upper echelons of the sect believe you have been diligent and loyal over the years, and though your strength is mediocre, you are an honest person, so they've found a marriage alliance for you.''An alliance marriage?''Not exactly. The other family has a rule: marrying into their family means taking their surname.'Is this... becoming a son-in-law who marries into the wife's family?

To save her family, she got married and divorced not for her own will. Due to the “derailment”, she was left penniless by a divorce settlement. She finally knew it was Di Juehao, her handsome, indifferent and rascally husband of the rich family, who plotted everything! However, she gave him an impolite impact on The day they divorced! Five years later, Wen Nuan made a good showing and became Top 1 designer of a world’s famous brand. She returned with two kids. Unexpectedly, she was forcibly taken by her ex-husband Di Juehao to the hotel to have s*x as soon as she returned. In the end, Wen Nuan gave him 10 yuan and left with pride: “Hey, 9.9 yuan is the market price for a top 1 male prostitute now. The rest is the tip for you!” But when she rushed to the company, she was surprised to find that his boss was…

- Description from Novelupdates

The most successful businessman of his time, who started from being a homeless orphan, died indignantly because of being plotted against by his most trusted aid, his own brother.