Jia Dao (779 ~ 843) was a poet in the Tang Dynasty. Han nationality. "Lang" is immortal. During the Tang Dynasty, he was born in Fanyang County, Youzhou, Hebei Province (now Zhuozhou City, Hebei Province). He became a monk in his early years and had no name. In the winter of the fifth year of Yuanhe (8 10), I went to Chang 'an to see Zhang Ji. The following spring, I went to Luoyang and visited Han Yu for the first time, and I deeply appreciated my poems. After secularization, scholars were introduced repeatedly. When he was literate, he was demoted to the main book of the Yangtze River (now Pengxi, Sichuan) because of slander. He once wrote the poem Sick Cicada (Chronology of Tang Poetry). Five years later (840), he went to Zhou Pu to join the army. Wu Zonghui Chang died in Zhou Pu in the third year (843). Jia Dao's poetry formed a school in the late Tang Dynasty, which had great influence. In the Tang Dynasty, Zhang Wei's Poet's Picture of Subject and Object was listed as one of the seven "elegant" proselytes. In Qing Dynasty, Huaiming Li called him a "lonely man" in the Poet's Subject and Object Map of the Middle and Late Tang Dynasty, and listed many disciples as "entering the room" and "visiting the door". In the late Tang Dynasty, Dong Li, Sun Sheng and others in the Five Dynasties respected Jia Dao very much, and even burned incense to worship his portraits and poems, which was like a miracle (Biography of Tang People, Reading Records of County Zhai). Jia Dao's Collection of the Yangtze River 10, with four series widely used, was photocopied and translated in Song Dynasty. The New Collection of the Yangtze River is based on Jia's poems collected in The Complete Poems of the Tang Dynasty, and other books and related anthologies, anthologies and appendices, such as Chronicle of Jia Dao, Examination of Jia Dao's Friends, and Jia Dao's Poetry Review, are relatively complete.