The discovery of the text score of "Youlan" has given us a better understanding of many aspects of Qin music in the Tang Dynasty, which is of great significance. The preface to the musical score of "Youlan" points out that this score is the biography of Qiu Ming, a native of the Six Dynasties. The preface says, "Qiu Gong was named Ming, and he was from Kuaiji. At the end of Liang Dynasty, he lived in seclusion in Jiuyi Mountain, and performed wonderful Chu tunes. The song "Youlan" is particularly exquisite... He died in Danyang County in the 10th year of Emperor Kaihuang's reign in the Sui Dynasty, at the age of ninety-seven." The full name of the music is "Jieshi Diao Orchid". "Jieshi Diao" refers to the form of the tune, and "Orchid" refers to the content described in the music. "Jieshi tune" originated from "Longxi Journey" in Xianghe Gese tune, which is a song from Longxi. Longxi is northwest of today's Tianshui, Gansu Province, with the Qiang people in the south and the Huns in the north. Therefore, the music of "Longxi Journey" may have absorbed the music style of the northwest ethnic minorities. The end of each beat in the score is marked with words: "beat the big breath" or "beat it", one stroke in four places, exactly four beats, which shows that it originated from the ancient Xianghe song. Because Bao Zhao, a poet from the Southern and Northern Dynasties, included verses such as "The flowers are falling without knowing the end, and I am empty and sad when I sit in confusion" in the lyrics of the qin music "Youlan", some people think that he is the author of "Youlan". The preface to the score says: "The sound is low but the ambition is far-reaching", and the small note at the end of the score also says: "It is better to slow down the work and play the news." It is nothing more than using a resentful and depressing tune to express Bao Zhaohuai's complaints and complaints about his unappreciated talent. Feelings of resentment.