Class Teacher System - Chapter 4: Save the psychopathic killer ()

He shattered the heavens… and got isekai’d into a crazy desert survival game!Xu Tao cultivated for ten thousand years, defying death and destiny to reach the Divine Heaven Immortal Stage.But just as he touched the heavens—The heavens kicked him into a world based on a full-dive VR game.Now he’s got no Qi. No weapons, no cultivation… and no pants.Just a desert full of monsters, a glitchy “Lost System” that won’t shut up, and knowledge forged from millennia of clawing his way to the top.Enemies? Weaklings.Mystic beasts? Drop garbage loot.Level caps? He’s Xu Tao.He didn’t spend ten millennia chasing immortality just to get wiped by a scorpion in a tutorial-zone!But he’s definitely not here to play. He’s here to ascend—again.Even if this time, he has to grind EXP and punch sand beetles to do it.But wait... That's not all...? He could also... What?!

After a disaster, a despised son-in-law quietly undergoes a shocking transformation. With both medical and martial arts skills, a battle for redemption is on the brink of erupting...

Easily cowed and bullied, she was the useless, ugly woman with no talent in medical skills. Supported by millions, he was Tianning’s most respected duke with the power to move all under Heaven. On their wedding day the bridal sedan was carried to the front doors, but the Duke of Qin’s gates were shut tight.

They told her, ‘Come back tomorrow.’

All alone, she walked step-by-step full of pride through the duke’s doors. Little could they imagine, this unattractive good-for-nothing was a beautiful, genius doctor of poisons!

—

After transmigrating to the past, poisons expert Han Yunxi finds herself on the verge of being married off to the country’s second most powerful man, the Duke of Qin. Her future life seems set–except her husband is an unfeeling ice block, her in-laws think she’s a eyesore, the empress dowager wants to use her for her own goals, and poison-related plots abound.

Alone, the intelligent (and sensible) Yunxi must carve her own space from the intricate web of court intrigue and the jianghu, relying on her words, wits, and wisdom to survive. Adapt when necessary, use force when required; to survive and thrive is the name of the game to a prosperous life.

No matter what, she’ll prove her right to live!

- Description from novelupdates

Having been reborn, she takes one glance at her ridiculously handsome husband and wonders if she had suffered from brain damage back then—she had actually demanded for a divorce with him. Repeatedly!