SUPREME ARCH-MAGUS - Chapter 32: Background of Kent’s new Pet

A heaven-defying ring that allows objects to be brought back from games into reality!Before ‘Dawn’ was released, it already obtained the status as the ‘second earth’. Jiang Fei, a young teen who loves games came into the world and quickly rose up in power, status and fame. With his unmatched skills, he decimated all foes that oppose him. However, such rise would attract the attention of many, even as he tried to play everything off as low-key, something just don’t work out as plan…“If trying to keep myself away from the spotlight no longer works, then come! Let the world know of my existence!” – Jiang Fei

He became a teacher at the best magic academy in the empire.
….For being mistaken for someone else.

It was only after Su Yayan's death that she realized that she was a malicious cannon fodder female character who became a scapegoat in a Mary Sue story.

Jian Rushi, born in a rich family, was a college girl. Due to some economic reasons, her family went broke. Her father committed suicide under great pressure, while her mother ran away with someone else, leaving her alone in this world. As she tried to find some comfort from her boyfriend, she found that her boyfriend cheated on her. Feeling devastated, Jian Rushi thought of ending her life. But she wanted to do a crazy thing before that. Suddenly she remembered she was still virgin. So she decided to sleep with a man before she died. She went to a pub one day and saw a pretty man drinking there alone. She mistook him as a money boy and took him home. After they slept, she had no money to pay him. As the compensation, Jian Rushi became the mistress of that man, who turned out to be a golden bachelor. And a series of embarrassing things happened…

- Description from Novelupdates