Li Keji, a dancer in the Tang Dynasty, was an official in the Tang Yizong era (859-873). He is good at performing legionary teleplay, knowing the melody and choreographing. There are large-scale dances such as "Sighing Hundred Years Team" and "Bodhisattva Mandance". The Hundred Years Team, also known as the Hundred Years Team Dance, is a large-scale women's group dance in the Tang Dynasty. In the 11th year of Xian Tong (870), Princess Tongchang died of illness, which was created by Li Keji in memory of Princess Tongchang. Su E's Du Yang Miscellaneous Edition records: "Li Ke entered the song" Sighing for a Hundred Years ",and when he heard it, he was resentful and burst into tears. And teach thousands of people to be a team for a hundred years. " And take out the pearls in the palace to make all kinds of jewelry. There are hundreds of dancers, all dressed up. Eight hundred big silks were painted with ichthyosaur patterns and laid on the ground as a set. Dancers seem to be dancing on the water. They sang and danced and finished a song "Sighing for a Hundred Years". Pearls are everywhere, and the scene is luxurious and sad. On the other hand, it shows that "Sighing for a Hundred Years" is a kind of dance to mourn the dead. It is sad and slow, but it must have fast-paced, emotional and complicated movements. Otherwise, the dance ornaments wouldn't be scattered all over the floor. After Princess Tongchang died, Tang Yizong, who loved her, ordered Princess Tongchang's wet nurse and maid-in-waiting to be martyred, but the courtiers opposed it. Zong Yi didn't listen, but punished these courtiers, and some of them died, which caused great dissatisfaction among the ruling and opposition parties. Under such a historical background, the "Sighing Centennial Team" can't hide this tragedy despite its luxurious form and huge scene. There are indeed many records about this dance in history books, but people naturally have not passed it on. In 873, Zong Yi died. In the same year, after Xuanzong ascended the throne, he approved the invitation of Prime Minister Cui and sent Li to Lingbiao (now Guangdong) to die.