In Tang Zhongzong (705-7 10), the pear garden is only a fruit and wood garden that coexists with jujube garden, mulberry garden, Taoyuan and cherry orchard in the imperial forbidden garden. Guo Mu Garden has a farewell hall, a wine pavilion and a stadium, which is a place for emperors, their relatives and nobles to enjoy themselves. Later, under the vigorous advocacy of Emperor Xuanzong of the Tang Dynasty, the nature of the pear garden changed, from a simple fruit orchard to a pear garden where "children of the pear garden" practiced singing, dancing and opera in the Tang Dynasty, and became the first comprehensive "art college" integrating music, dance and opera in the history of China. Li Longji himself served as Cui Gong (or Ya Gong) of Liyuan, equivalent to the principal (or dean).

"The Book of the New Tang Dynasty: Records of Rites and Music" said: "Xuanzong knows the melody and loves music, so he chose 300 children of geisha in the left to teach in Liyuan. If the voice is wrong, the emperor will feel it and correct it. He is a disciple of the Emperor Liyuan. " It can be seen that Liyuan was an institution established by the imperial court in Xuanzong of Tang Dynasty.

Xuanzong in Tang Dynasty had rich musical talents, which had a great influence on the development of music in Tang Dynasty. He likes to play pipa and knot drums in person and is good at composing music. After he ascended the throne, he set up a teaching workshop in the palace, and the "pear garden" was a place where actors were specially trained.

Tang Xuanzong, Lei Haiqing, Gong Sundaniang and others all served as generals of Leying. They are not only talented and famous artists, but also tireless instructors. In the poem "Watching Disciples Dance Sword", the poet Du Fu lamented the bold dance, "Yao is like an arrow of nine days, and the disease is like an angel before a dragon's wings; She began to vent her anger like a thunderbolt, just like the river and the sea. "

In the preface of this poem, it is said that there is a calligrapher named Zhang Xu. Since watching Gong Sundaniang's sword dance, his cursive script has made great progress. Li Longji, Emperor Xuanzong of the Tang Dynasty, relied on these excellent creators and directors to create a large number of performing artists. Children in Liyuan are divided into sitting department, standing department, small department, male department and female department.

Generally speaking, the sitting part is an excellent actor, and the musicians sit in the hall to play. The number of dancers is about 3 to 12, and the dance is elegant, accompanied by fine music of silk and bamboo. Rib is an ordinary actor, and musicians stand under the hall to perform. There are 60 to 80 dancers, and the dance is magnificent and magnificent. The accompanying musical instruments are drums and gongs (that is, golden pheasants), which are huge in size. The small department is a children's performance team. In addition, there are dance departments, which are divided into Wen dance and Jian dance. The Royal Academy of Music, Dance and Opera has such a large number of screenwriters, both men and women, which appeared more than 1000 years ago, which is rare in the world.