Song of the Phoenix by Dongshan Muyu

Nan Xuanyue, empress of Great Zhou, was given a cup of poisoned wine by her husband and left to die in the Cold Palace. Her loyal family was falsely accused and wiped out. Their only surviving bloodline, the ten-year-old crown prince Song Che, was stripped of his title, reduced to a commoner, and imprisoned in a side hall of the Cold Palace, where he endured endless abuse. She died consumed by hatred, but returned to life in the body of Xiao Fengge, a peerlessly beautiful girl who had been pushed into a lake and drowned. She reentered the palace and started as a lowly beauty. One dance captivated the emperor, while she quietly crushed her enemies one by one. In the imperial garden, she encountered a child as thin as a rake: her Che'er. Mother and son stood face to face, yet could not acknowledge each other. From the bedside of her husband in her past life to the blades of her enemies in this one, she wielded her beauty as a blade and her wisdom as a trap, determined to topple this bloodstained throne. He once sentenced her to death; now she had returned to destroy his empire with her own hands. But when her revenge reached its end, she discovered that true revenge was never about making her enemies die. It was about learning to live again herself.