Heavenly Locust Emperor - Chapter 12: Harvest

In novels with a stud there is always a Senior Martial Brother like this:

In the early stages of the novel, his innate talent is high, his cultivation is good, his appearance is handsome, and he has an intelligent, cute younger Martial Sister as a fiancée.

In the middle stages of the novel, he is caught unprepared and defeated by a young disciple (the protagonist) in the sect who’s hardly remarkable at all. From then on, he falls from his godly altar and loses his brilliance. Even his young Martial Sister leaves him for someone else.

In the late stages of the novel, he continues to turn dark, going down the Demonic Path and becoming the major villainous boss. However, the protagonist still ruthlessly defeats him and his soul is eternally sealed.

Once Qin Mo opened his eyes, he discovered that he had become this Senior Martial Brother.

- Description from Novelupdates

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

Five years ago, she was schemed by her sister and became pregnant. Five years later, she returns with strength and becomes a money god in everyone's eyes.“President Jiang, Mr. Xu sent over two pairs of 10-carat earrings, hoping to collaborate with you.”“Vulgar, throw them away.”“President Jiang, Mr. Zhang bought a plane and sent it over, asking where you plan to invest in the next project?”“President Jiang, the kindergarten teacher called, saying the little miss was bullied.”She drove straight to the school, only to see her brothers nervously surrounding her sister. She smiled lightly and walked over slowly.