Zhu Yan Bone: Emperor and Spy in Forbidden Court

Xue Jian disguises herself as a man to infiltrate the Imperial Medical Bureau and seek revenge for her father, becoming a trusted attendant to the Empress Dowager who killed him. She plants a mother-child poison on the Empress but is repeatedly targeted by Emperor Ming Yu Heng, who opposes the Empress Dowager. During their deadly rivalry, the Emperor secretly falls for Xue Jian. When her veil slips and her true identity is revealed, they join forces to overthrow the Empress Dowager's tyranny and finally find love.