An Lingrong entered the palace as a beautiful girl, and won the Holy Heart for her outstanding singing voice and gentle temperament. At the palace banquet, she was called by the queen to sing, and her song "Phoenix Seeking Phoenix" was alluded to seduce the prince, causing an uproar. Although the emperor was not convicted on the spot, the queen's gang pressed hard, and An Lingrong was beaten. In the cold palace, she met a reclusive old palace maid, and discovered secret letters from the underground that pointed to the queen's early conspiracy to usurp power. Her former sisters betrayed her to protect themselves, but she obtained key evidence with the secret help of the imperial doctor He Lanfeng; she planned to return to the emperor's sight, but the queen counterattacked. She was in danger; the old palace maid sacrificed herself to protect her, and before her death she told that her life experience was related to the late emperor's edict; An Lingrong teamed up with another disgraced concubine to use irrefutable evidence of corruption to let the emperor witness the queen's crimes; the queen fought back frantically, and An Lingrong was almost silenced, but in the end the evidence was made public and the queen was After the victory, An Lingrong was tired of the palace and left by feigning death. He and He Lanfeng lived in seclusion in the south of the Yangtze River. Before leaving, he compiled the secrets of the cold palace into a book and promoted the reform of the harem system. The ending of the story is peaceful and sad. Although An Lingrong was not trapped in the palace wall, he lost his innocence and family affection forever.
