The Regent's Wife: Master of Medicine and Poison

Mu Fengyan accidentally travels through time during a fierce battle, becoming the legitimate daughter of the Prime Minister of the Zi Sheng Kingdom. When she wakes up, she discovers she has already been buried. Fortunately, Ye Lijue helps her escape from the grave. Together, they survive numerous deadly encounters and face countless crises. Eventually, they successfully overthrow the throne and rise to the peak of power side by side.