Li Shangyin, a famous poet in the late Tang Dynasty. He lived in the era of the most intense sectarian struggle in the ruling group of the Tang Dynasty. He was related to the opposing factions Niu Sengru and Niu Deyu at that time. He became an innocent victim of the struggle between the two factions, so he felt very depressed in his heart. Many of the poems he wrote reflect this state of mind in twists and turns. His poems have beautiful words and tones, often use symbolic techniques, and are very romantic. His lyrical poetry has a sentimental mood and hazy artistic conception, which has a great influence on future generations.