Is Lanting preface a self-created poem?

Assembling Lanting preface couplets is not a self-created poem. According to relevant data, The Preface to the Collection of Lanting is not a poem, but an essay. To be exact, it is the preface of a collection of literary activities, and the couplets in it are not poems. This paper describes the Lanting scenery and happy gathering of Wang Xizhi and others, and expresses the author's sigh: great events are not frequent, short events are short, and all shall be well. The author is extremely happy and sad when he is happy and sad. The article also changed with his feelings, from calm to calm, to ups and downs, ups and downs, so Preface to Lanting Collection became a famous masterpiece.