The Scheming Maid Learns Medical Skills and Is Reborn to Overthrow the Entire Marquis Mansion

In Yan Yunyin's previous life, after her master Gu Qingying became pregnant, she was sent to her husband Shen Zhiyi's bed to be pampered by Gu Qingying! She was forced to be Shen Zhiyi's mistress, and worked hard to expand her connections for Gu Qingying. However, after she lost her use value, she was killed by Gu Qingying. However, she never thought that God would save her. Once she was reborn, she would no longer be the maidservant of the poor protector! She is going to overthrow this palace!