What are the classic works of China ancient calligrapher Wang Xizhi?

Wang Xizhi was a famous calligrapher in the Eastern Jin Dynasty in China. His calligraphy works are very rich, including Preface to Lanting, Official Slave Post, Seventeen Post, Two Thanks Post, Orange Post, menstruation Post, Fast Snow, Le Yi Lun and so on. Among them, Preface to Lanting is known as "the best running script in the world", which has strong artistic characteristics. Its outstanding features are natural composition and vivid charm. Throughout the whole article, he is leisurely and handy, and organically combines artistic style with written content, which fully shows Wang Xizhi's feelings of quick self-sufficiency when gathering with friends. Full of emotion and writing, the unity of heart and hand, vivid charm, was regarded as a model of learning running script by calligraphers of all ages.