What is Yuan Haowen's masterpiece?

Yuan Haowen's literary achievements are the most outstanding in poetry creation, and he established his position in the history of literature with "Mourning for the Death". These poems were written before and after the demise of the Jin Dynasty, mainly including three poems about Qiyang, five poems about Renchen's driving in December, fifteen poems about the snow pavilion, three poems about crossing the North on May 3rd, and ten songs about the little girl.

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Yuan Haowen is knowledgeable and rich in writings. It is said that his works are: more than 380 poems 1380 words, 6 Sanqu, more than 250 essays, 202 novels in 4 volumes, Zhongzhou Collection 10 volume, Tang Poetry Advocacy 10 volume, Yishan Yuefu. In addition, there are poems on mountains, Yuefu poems, and continued records. Collected Works of Mr. Yishan handed down from ancient times, and Complete Works of Mr. Yuan Yishan reprinted in Guangxu Reading Room of Qing Dynasty. In addition, there are many lost works: Golden Rooster, Dongpo Poems, Du Shi Lun, Poems and Self-Policing, Miscellanies of Renchen, Records of Words and Actions of Jin Dynasty, Nanguan Record, Ji Jianfang, Gu and so on.