In her previous life, she was an unpopular concubine in the general's palace. She was selected into the palace because she looked exactly like the emperor (Xiao Yu), Bai Yueguang, who died young. His character was originally gentle and tolerant, longing for true love. In his previous life, he was used as a substitute by the emperor. He was framed by his beloved "White Moonlight" cousin (Liu Ruyan). The family was framed for rebellion and the entire family was executed. He himself was framed for adultery with a guard, and died tragically in the cold palace after being tortured. Reborn and returned to the palace three months before the draft. After rebirth, his personality changed drastically and his goal was clear: revenge! Protect your family! Tear apart the emperor's false affection and Liu Ruyan's disguise! Use your past life memories to make progress step by step. "Xiaobai Hua" manifests itself as follows: Love and hate are written directly on her face (for her enemies), she protects her shortcomings (for her family and those who treat her sincerely), sometimes she will fight back in seemingly "clumsy" but effective ways, she may be impulsive out of anger in the early stage, but she quickly learns to disguise and calculate.