Preface to Lanting Collection is also called Preface to Lanting Collection. This was written by Wang Xizhi, a calligrapher in Jin Dynasty. The Preface to the Orchid Pavilion narrates the beauty of the landscape around the Orchid Pavilion and the joy of the party, and expresses the author's feelings about the impermanence of life and death. Calligraphy has been handed down from generation to generation, with 28 lines and 324 words. The composition, structure and brushwork are perfect. This calligraphy is mainly centered on the pen, with many strokes exposed, delicate expression and smooth and beautiful lines. The structure of Chinese characters is vertical, with low left and high right. The size of the word corresponds, the length alternates, and the virtual and the real are born together. The layout is wired, the layout has no columns, and every line is swaying and turbulent, which is a masterpiece of his middle age.