Among female poets in the Tang Dynasty, Yu Xuanji is the most famous and legendary one. She is very beautiful and intelligent, known as the Female Sage Poet. However, such a beautiful and talented woman was very unlucky and suffered many a setback during her life. She was involved in a number of murders, including the Poisoning of Wen Tingjun, with a tragic end. Was she really the murderer? What's the mystery behind this?