What is Qu Yuan's masterpiece? What is the most influential poem?

Li Sao, Nine Songs, Nine Chapters, Tian Wen and so on.

The most influential poems are:

As a great poet, the appearance of Qu Yuan not only marks that China's poetry has entered a new era from collective singing to individual originality, but also his new poetic style and Chu Ci has broken through the expression form of The Book of Songs, greatly enriching the expressive force of poetry and opening up a new world for China's ancient poetry creation. Therefore, later generations called Chu Ci and The Book of Songs together as The Book of Songs. "Feng" and "Sao" are the sources of the two fine traditions of realism and romanticism in the history of China's poetry. At the same time, Chu Ci, represented by Qu Yuan, also influenced the formation of Han Fu.

Qu Yuan (about 340 BC or 339 ~ 278 BC), a poet and politician of Chu State in the Warring States Period, was born in Danyang, Yichang City, Hubei Province. His surname was Mi, Qu, Ming Ping and Yuan Zi. And because the name of the cloud is regular, the spirit word is general, during the Warring States period. Chu Wuwang Xiong Tong's son Qu Xian's descendants. When I was a teenager, I was well educated, knowledgeable and ambitious. In his early years, he was trusted by Chu Huaiwang as Zuotu, and was also a doctor of San Lv, in charge of internal affairs and foreign affairs. He advocated "American politics", promoting and appointing talents internally, perfecting statutes and uniting external forces to resist Qin. Slashed by nobles, he was exiled to Hanbei and Yuanxiang Valley. After General Qin attacked Ying, the capital of Chu State (now Jiangling, Hubei Province), Qu Yuan drowned in the Miluo River and died heroically.

Qu Yuan is the first great patriotic poet in the history of China, the founder of China's romantic literature, the founder and representative author of Chu Ci, which pioneered the tradition of "vanilla beauty", and is known as "the ancestor of China's poetry" and "the ancestor of Ci". The appearance of Qu Yuan marks that China's poetry has entered a new era from collective singing to individual originality. Qu Yuan's major works include Li Sao, Nine Songs, Nine Chapters and Tian Wen. Chu Ci, with Qu Yuan's works as the main body, is the source of China's romantic literature, and it is also called "coquettish" with The Book of Songs, which has a far-reaching influence on later poetry.

1953, on the occasion of the 2230th anniversary of Qu Yuan's death, the World Peace Council passed a resolution to identify Qu Yuan as one of the four cultural celebrities in the world.