Which poet was the founder of Changji style poetry in Tang Dynasty?

Li He, a famous poet in Tang Dynasty, pioneered Changji style poetry.

Li He, with a long and auspicious word, is known as "Shi Gui", and is also a famous poet in the Tang Dynasty, who is equally famous with Du Fu, Li Bai, Shi Fo and Wang Wei. Li He's poems are full of imagination, and often convey his feelings with myths and legends, so later generations often call him "a ghost genius" and "Shi Gui", and his poems are also called "the words of a ghost fairy".

Li He is another famous romantic poet in the history of China literature after Qu Yuan and Li Bai. He, together with Li Bai and Li Shangyin, is also called "Li San" in Tang Dynasty, and he is also a representative figure in the turning point of poetic style in the middle and late Tang Dynasty. His poems are mostly used to lament the untimely birth and inner depression, and to express the pursuit of ideals and ambitions; It reflects the situation that the vassal region was divided, the eunuchs were authoritarian and brutally exploited the people.