The first book was "The Legend of Kangxi's Mother, Concubine Tong". This book was written by the author, Shen 'er. It was an ancient romance novel about the fight in the palace. It told the story of Tong Jia's Yuqing, a woman who lived in loneliness and coldness all her life. She longed for freedom and love in the palace. In addition, there were novels such as Qing Palace: The Biography of Wan Concubine, Qing Chuan Zhi De Tian Fu Hou, and Qing Chuan Zhi Chong Concubine Strategy, which were also related to the love story between Emperor Shunzhi and Concubine Dong E. They could be used as supplementary recommendations. I hope you like my recommendation, Mwah ~π