Transmigrated to the 70s, I Became the Female Lead's Vile Third Sister-in-Law

One morning, Jiang Yuzhu woke up to find herself transformed into the female protagonist's vile third sister-in-law—that lazy, gluttonous, vain, shrewish, and shameless woman. Ever since she married into the Xu family, the Xu household had not known a single day of peace, constantly in chaos and turmoil, making her a detestable supporting character.

It must have been the wrong way to wake up, she needed to go back to sleep! She, a food blogger with millions of fans, had actually transmigrated to the impoverished 1970s. What terrible karma had she accumulated in her past life?!

Wait, Jiang Yuzhu, Xu Meili... wasn't this the period novel she had read out of boredom before going to bed last night? She had been so angry that she couldn't sleep well all night, and for good reason: the villainess not only shared her name but also met a tragic end. Meanwhile, the original female protagonist, Xu Meili, was everyone's darling; anyone who offended her would come to no good.

Why should it be like this...? Why should the female lead be pampered and live a good life? And the villainess doesn't deserve to be loved or have a good life? So what if she's the female lead? Since I'm here, I won't just live, I'll live brilliantly! Anyone who makes my life difficult won't have an easy time either... She's going to be vile to the very end!