Was there a novel that told the story of a princess from the Ming Dynasty traveling to the Qing Dynasty?

She had once read a novel about the daughter of Wu Zetian of the Tang Dynasty, the sister of Princess Taiping. She was sent to Daoism when she was young. After she became a phoenix, she would be completely forgotten as she left. Hence, he chose to leave. A few hundred years later, it was the Kangxi period of the Qing Dynasty when he returned to the mortal world. She descended into the Forbidden City in the form of a phoenix and explained her background to Kangxi. She was once again named a princess by Kangxi and lived in the palace. Please ask for the name of the novel. Thank you very much!