Transmigrated as the Villainess

The last thing you remember is applying a bandaid after cutting your finger on your favorite historical romance novel, "The Tangled Thread." Now, you're waking up in a small, shabby room, the air thick with dust and the smell of mold. A timid young woman in ancient clothing hovers over you, calling you "My lady." Your throat burns, your body aches, and a black bottle is clutched in your hand.
You quickly realize the horrifying truth: you've transmigrated into the body of Huang Daiyu, the villainess of the very book you were reading, currently confined to the cold palace with only three months left until her execution. Your maid, LiMei, reveals that you just attempted to poison yourself to gain the crown prince's attention – a desperate act typical of the character you now inhabit. The palace doctor arrives, grudgingly administers an antidote, and leaves with a stern warning, making it clear no one will save you if you try this again.
Alone with LiMei in the desolate cold palace, surrounded by decay and neglect, you know you must abandon the original plot. Survival is now your only goal, and with limited resources and time ticking down, you have to figure out how to live in this harsh reality while finding a way back to your own time.
