Beauty Kills the Heart

In the ever-changing Northern and Southern Dynasties, regimes were iterated, imperial courts were replaced, killings and attacks continued, and changing emperors was more diligent than changing clothes. She traveled through thousands of years and came to this world. When she opened her eyes, she found a bowl of abortion pills in front of her. Fortunately, she can spy on people's hearts. Even if she becomes the scapegoat for the deposed Zhou Kingdom, she can turn danger into safety and turn defeat into victory. With a high-tech "lie detection" finger, in the treacherous court and the harem full of dangers, how did she manage every step of the way?